def __init__(self, mod, value, seed, dist, directory, full):
Optimizer.__init__(self, value)
self.rand = random.Random(seed)
self.model = mod
self.dist = dist
self.directory = directory
self.full = full
def __init__(self, argv, reactor, objective):
""" Constructor.
"""
# Initialize the Optimizer object.
Optimizer.__init__(self, argv, reactor, objective)
# Initialize the PGA object.
PGA.__init__(self, argv, PGA.DATATYPE_INTEGER, self.reactor.number_bundles(), PGA.MAXIMIZE)
# Set default operators.
self.SetCrossover(self.htbx) # Crossover
self.SetEndOfGen(self.end_of_iteration) # End of generation info
self.SetInitString(self.init) # String initialization
self.SetMutation(self.swap) # Mutation via a single swap
# Set default values.
self.maximum_generations = 100 # Maximum generations
self.population_size = 50 # Population size
self.number_replaced = 40 # Number replaced each generation
self.seed = 123 # PGA random number seed
self.np_seed = 123 # NumPy random number seed
self.binary_sweep = False # Perform one sweep of binary exchanges
# Optimizer-specific flags.
self.track_best = False
self.fixed_central = True
# Counter for evaluations on each process.
self.evals = 0
def main(args, profile=False):
db = DataBase(args.games)
results = db.load_game_results(mingames=50)
print('{} games loaded.'.format(len(results)))
players = db.load_players()
optimizer = Optimizer(disp=True)
optimizer.load_games(results)
maxiter = 30 if profile else 0
ratings, f, v = optimizer.run(method='l-bfgs-b', maxiter=maxiter)
if profile:
return
print()
by_rating = []
for iplayer, rating in ratings.items():
print(players[iplayer])
mr = 0
for date, r in sorted(rating.items()):
date = datetime.date.fromtimestamp(date * 24 * 3600)
print(date.isoformat(), r)
if r > mr:
mr = r
by_rating.append((mr, players[iplayer]))
print()
print(f)
print(f.calc(0.2) - f.calc(-0.2))
best = list(sorted(by_rating))[-20:]
for r, p in reversed(best):
print('{:24} {}'.format(p, r))
def cnn_2d_mnist():
d = image.mnist()
d.shuffle()
def layer_gen():
l1 = ConvLayer2d(layer_id=0, image_size=d.data_shape,
activation=calcutil.relu, c_in=1, c_out=16, k=(2, 2),
s=(1, 1), is_dropout=True)
l2 = MaxPoolLayer2d(layer_id=1, image_size=l1.output_size,
activation=calcutil.identity, c_in=16, k=(2, 2))
l3 = ConvLayer2d(layer_id=2, image_size=l2.output_size,
activation=calcutil.relu, c_in=16, c_out=32, k=(2, 2),
s=(1, 1), is_dropout=True)
l4 = MaxPoolLayer2d(layer_id=3, image_size=l3.output_size,
activation=calcutil.identity, c_in=32, k=(2, 2))
l5 = HiddenLayer(layer_id=4, n_in=l4.n_out, n_out=800,
activation=calcutil.relu)
l6 = HiddenLayer(layer_id=5, n_in=l5.n_out, n_out=100,
activation=calcutil.relu)
l7 = SoftMaxLayer(layer_id=6, n_in=l6.n_out, n_out=len(d.classes()))
layers = [l1, l2, l3, l4, l5, l6, l7]
return layers
m = Model(input_dtype='float32', layers_gen_func=layer_gen)
optimizer = Optimizer(d, m)
optimizer.optimize(100, 1000)
def test_emit_operation(self):
opt = Optimizer()
opt.add_operation(Types.VOID, Operations.FINISH, [])
ops = opt.build_operations()
assert len(ops) == 1
assert ops[0].op == Operations.FINISH
assert ops[0].getarglist() == []
def end_of_iteration(self):
""" Do something at the end of each generation.
In general, this a very customizable routine. This is where
hill-climbing heuristics can be placed. Additionally, tracking
of objectives as a function of generation is easily done. For this
default implementation, the best keff and maxpeak are kept for
each generation.
"""
best = self.GetBestIndex(PGA.OLDPOP)
bestpattern = self.GetIntegerChromosome(best, PGA.OLDPOP)
it = self.GetGAIterValue()
# Note, we need to reshuffle and reevaluate for the best pattern.
# This is *probably* more efficient than keeping k and p for
# all evaluations and then trying to find the values corresponding
# to the bestpattern.
self.reactor.shuffle(bestpattern)
self.k, self.p = self.reactor.evaluate()
# Tell mother what we've done.
Optimizer.fire_signal(self)
#print "iter = ",iter
#print " it = ", it, " best = ", self.GetEvaluation(best, PGA.NEWPOP), " k p = ",k,p,bestpattern
#print " *** ", self.GetEvaluation(best, PGA.OLDPOP)
if self.track_best :
self.best_eval[it-1] = self.GetEvaluation(best, PGA.OLDPOP)
self.best_k[it-1] = self.k
self.best_p[it-1] = self.p
self.best_pattern[it-1,:] = bestpattern
del bestpattern
def test_simple_new(self, cpu):
opt = Optimizer([Virtualize])
struct_descr = cpu.new_struct()
opt.add_operation(Types.REF, Operations.NEW, [], descr=struct_descr)
ops = opt.build_operations()
assert len(ops) == 0
def test_symmetric_wins(self):
o = Optimizer(rand_seed=239)
o.load_games([(1, 2, 1, 1), (1, 2, 1, 0), (2, 1, 1, 1), (2, 1, 1, 0)])
rating, f, v = o.run(method='Newton-CG')
self.assertAlmostEqual(
f.calc(convert_rating_diff(rating[1][1] - rating[2][1])), 0.5, 2)
self.assertLess(abs(rating[1][1] - rating[2][1]), 5)
def test_draw(self):
o = Optimizer(rand_seed=239)
o.load_games([(1, 2, 1, 2), (2, 1, 1, 2)])
rating, f, v = o.run(method='cg')
self.assertAlmostEqual(f.calc(0), 0.5, 3)
self.assertAlmostEqual(
f.calc(convert_rating_diff(rating[1][1] - rating[2][1])), 0.5, 2)
self.assertLess(abs(rating[1][1] - rating[2][1]), 5)
def test_objective_time_reg(self):
o = Optimizer(rand_seed=239)
o.load_games([(1, 2, 1, 1), (1, 2, 2, 0)])
v = o.create_vars({1: {1: 2200, 2: 1800}, 2: {1: 1800, 2: 2200}},
(0, -1.01))
(total, likelihood, regularization, _, _, _) = o.objective(
v, verbose=True)
self.assertLess(likelihood, 0)
self.assertTrue(1E-6 < regularization < 1)
def test_inputs(self):
opt = Optimizer()
res = opt.add_input(Types.INT)
opt.add_operation(Types.VOID, Operations.FINISH, [res])
ops = opt.build_operations()
assert len(ops) == 1
assert ops[0].op == Operations.FINISH
assert ops[0].getarglist() == [res]
def test_read_unsetfield(self, cpu):
opt = Optimizer([Virtualize])
struct_descr = cpu.new_struct()
field_descr = cpu.new_field(struct_descr)
p0 = opt.add_operation(Types.REF, Operations.NEW, [], descr=struct_descr)
i0 = opt.add_operation(Types.INT, Operations.GETFIELD, [p0], descr=field_descr)
ops = opt.build_operations()
assert len(ops) == 0
assert opt.getvalue(i0).getint() == 0
def test_output_format(self):
o = Optimizer()
o.load_games(GAMES1)
ratings, f = o.random_solution()
self.assertEqual(len(ratings), 3)
self.assertEqual(list(sorted(ratings.keys())), [1, 2, 3])
for player_rating in ratings.values():
for r in player_rating.values():
self.assertTrue(1000 < r < 3000)
self.assertEqual(list(sorted(ratings[1].keys())), [1, 2])
self.assertEqual(list(sorted(ratings[2].keys())), [1, 3, 4])
self.assertEqual(list(sorted(ratings[3].keys())), [1, 2, 3, 4])
def test_lt(self):
opt = Optimizer([IntBounds, GuardPropagation])
i0 = opt.add_input(Types.INT)
i1 = opt.add_operation(Types.INT, Operations.INT_LT,
[i0, opt.new_constant_int(10)],
)
opt.add_operation(Types.VOID, Operations.GUARD_TRUE, [i1])
opt.add_operation(Types.INT, Operations.INT_LT, [i0, opt.new_constant_int(15)])
ops = opt.build_operations()
assert len(ops) == 2
def test_objective_single_game(self):
o = Optimizer()
o.load_games([(1, 2, 1, 1)])
v1 = o.create_vars({1: {1: 2200}, 2: {1: 1800}}, [0, -1.01])
v2 = o.create_vars({1: {1: 2200}, 2: {1: 2200}}, [0, -1.01])
v3 = o.create_vars({1: {1: 1800}, 2: {1: 2200}}, [0, -1.01])
(total1, likelihood1, regularization1, smoothness1,
func_hard_reg, _) = o.objective(v1, verbose=True)
self.assertLess(likelihood1, 0)
self.assertTrue(1E-6 < regularization1 < 1)
self.assertEqual(smoothness1, 0)
self.assertTrue(func_hard_reg < 1)
(total2, likelihood2, regularization2, _, _, _) = o.objective(
v2, verbose=True)
self.assertLess(likelihood2, likelihood1)
(total3, likelihood3, regularization3, _, _, _) = o.objective(
v3, verbose=True)
self.assertAlmostEqual(regularization1, regularization3)
self.assertLess(total1 / total2, 0.9)
self.assertLess(total2 / total3, 0.9)
def compilePB(pyBonCode: str, verbosity=0) -> str:
"""Compile Python Bonsai code and return Bonsai code.
This function combines the various stages of the compiler and optionally outputs the interim stages.
The stages called are (in order):
- Lexer
- Syntactic Analyzer (Parser)
- Semantic Analyzer
- Intermediate Code Generator
- Optimizer
- Intermediate Code Compiler
Parameters:
@param pyBonCode: the Python Bonsai code to be compiled as raw source
@param verbosity: the verbosity level defines which interim stages to print
@type pyBonCode: str
@type verbosity: int
"""
if verbosity is None:
verbosity = 0
tokens = Lexer(pyBonCode).tokens()
if verbosity > 1:
print("Tokens:", file=stderr)
for token in tokens:
print(token, file=stderr)
print("", file=stderr)
ast = SyntacticAnalysis(tokens)
SemanticAnalysis(ast)
ic = IntermediateCode()
ic.fromSyntaxTree(ast)
if verbosity > 2:
print("Original instructions:", file=stderr)
_print_instructions(ic)
print("\nSymbols:", file=stderr)
print(ic.symbolTable, file=stderr)
print("\nRegisters:", file=stderr)
print(ic.registers, file=stderr)
oc = Optimizer(ic)
bonCode = oc.compile()
if verbosity > 0:
print("\nOptimized instructions:", file=stderr)
_print_instructions(oc)
print("\nSymbols:", file=stderr)
print(oc.symbolTable, file=stderr)
print("\nRegisters:", file=stderr)
print(oc.registers, file=stderr)
print("\nCompiled Bonsai code:", file=stderr)
print(bonCode, file=stderr)
return bonCode
def test_guard_false(self):
opt = Optimizer([ConstantFold, GuardPropagation])
i0 = opt.add_input(Types.INT)
opt.add_operation(Types.VOID, Operations.GUARD_FALSE, [i0])
opt.add_operation(Types.INT, Operations.INT_EQ, [i0, opt.new_constant_int(1)])
ops = opt.build_operations()
assert len(ops) == 1
assert opt.getvalue(i0).getint() == 0
def test_gradient_games1(self):
o = Optimizer(rand_seed=239, time_delta=0.01, func_hard_reg=0,
func_soft_reg=0)
o.load_games(GAMES1)
v = o.init()
grad = o.gradient(v)
for i in range(len(v)):
def ocomp(x):
save_x = v[i]
v[i] = x
res = o.objective(v)
v[i] = save_x
return res
self.assertAlmostEqual(derivative(ocomp, v[i]), grad[i])
def generate(generations, population, nn_param_choices, dataset):
"""Generate a network with the genetic algorithm.
Args:
generations (int): Number of times to evole the population
population (int): Number of networks in each generation
nn_param_choices (dict): Parameter choices for networks
dataset (str): Dataset to use for training/evaluating
"""
optimizer = Optimizer(nn_param_choices)
networks = optimizer.create_population(population)
# Evolve the generation.
for i in range(generations):
logging.info("")
logging.info("")
logging.info("***Doing generation %d of %d***" % (i + 1, generations))
print("\n\n\n**************************************")
print("***Generation %d/%d" % (i + 1, generations))
print("**************************************\n\n")
# Train and get accuracy for networks.
train_networks(networks, dataset)
# Get the average accuracy for this generation.
average_accuracy, average_loss = get_averages(networks)
# Print out the average accuracy each generation.
logging.info("Generation average: %.2f%% (%.4f)" % (average_accuracy * 100, average_loss ))
logging.info('-'*80)
# Evolve, except on the last iteration.
if i != generations - 1:
# Do the evolution.
networks = optimizer.evolve(networks)
copy_accuracies(networks)
# Sort our final population.
networks = sorted(networks, key=lambda x: x.accuracy, reverse=True)
# Print out the top 5 networks.
print_networks(networks[:5])
def cnn_3d_psb():
# PSB ボクセルデータ(Train/Test双方に存在するクラスのデータのみ)
data = PSBVoxel.create(is_co_class=True, is_cached=True, from_cached=True,
align_data=True)
# ボクセルデータを回転してデータ数増加
data.augment_rotate(start=(-5, 0, 0), end=(5, 0, 0),
step=(1, 1, 1), center=(50, 50, 50), is_cached=True,
from_cached=True, is_co_class=True)
# data.augment_translate(start=(0, 0, -5), end=(0, 0, 5), step=(1, 1, 1),
# is_cached=True, from_cached=True, is_co_class=True)
# データの順番をランダムに入れ替え
data.shuffle()
# データセットの次元ごとの要素数確認
print data
# 学習モデル生成関数
def layer_gen():
l1 = ConvLayer3d(layer_id=0, shape_size=data.data_shape,
activation=calcutil.relu, c_in=1, c_out=16, k=5,
s=3, is_dropout=True)
l2 = MaxPoolLayer3d(layer_id=1, shape_size=l1.output_size,
activation=calcutil.identity, c_in=16, k=4)
l3 = HiddenLayer(layer_id=2, n_in=l2.n_out, n_out=512,
activation=calcutil.relu, is_dropout=True)
l4 = HiddenLayer(layer_id=3, n_in=l3.n_out, n_out=256,
activation=calcutil.relu, is_dropout=True)
l5 = SoftMaxLayer(layer_id=4, n_in=l4.n_out, n_out=len(data.classes()))
layers = [l1, l2, l3, l4, l5]
return layers
# 学習モデル
model = Model(input_dtype='float32', layers_gen_func=layer_gen)
print model
# 学習モデルの学習パラメタを最適化するオブジェクト
optimizer = Optimizer(data, model)
# バッチ一回分の学習時に呼ばれる関数
def on_optimized():
optimizer.result.save()
optimizer.params_result.save()
# 最適化開始
optimizer.optimize(n_iter=100, n_batch=len(data.x_train) / 10,
is_total_test_enabled=False, on_optimized=on_optimized)
def test_time_regularization(self):
o = Optimizer(rand_seed=239)
o.load_games([(1, 2, 1, 1), (2, 1, 1, 0), (1, 2, 2, 0), (2, 1, 2, 1)])
rating, f, v = o.run()
(total1, _, reg, smoothness1, func_hard_reg,
func_soft_reg) = o.objective(v, verbose=True)
self.assertLess(func_hard_reg, 1)
self.assertGreater(smoothness1, 0.001)
self.assertGreater(rating[1][1], rating[1][2])
self.assertLess(rating[2][1], rating[2][2])
self.assertGreater(rating[1][1], rating[2][1])
self.assertLess(rating[1][2], rating[2][2])
prob1 = f.calc(convert_rating_diff(rating[1][1] - rating[2][1]))
self.assertGreater(prob1, 0.51)
prob2 = f.calc(convert_rating_diff(rating[1][2] - rating[2][2]))
self.assertLess(prob2, 0.49)
def cnn_3d_shrec_usdf(n_fold):
# PSB ボクセルデータ(Train/Test双方に存在するクラスのデータのみ)
data = SHRECVoxelUSDF.create_shrec_voxel_usdf(n_fold=n_fold)
from CubicCNN.src.util.plotutil import plot_voxel
for x, y in zip(data.x_test[:, 0], data.y_test):
print y
plot_voxel(x == 10)
# データの順番をランダムに入れ替え
data.shuffle()
# データセットの次元ごとの要素数確認
print data
# 学習モデル生成関数
def layer_gen():
l1 = ConvLayer3d(layer_id=0, shape_size=data.data_shape,
activation=calcutil.relu, c_in=1, c_out=16, k=5,
s=3, is_dropout=True)
l2 = MaxPoolLayer3d(layer_id=1, shape_size=l1.output_size,
activation=calcutil.identity, c_in=16, k=4)
l3 = HiddenLayer(layer_id=2, n_in=l2.n_out, n_out=512,
activation=calcutil.relu, is_dropout=True)
l4 = HiddenLayer(layer_id=3, n_in=l3.n_out, n_out=256,
activation=calcutil.relu, is_dropout=True)
l5 = SoftMaxLayer(layer_id=4, n_in=l4.n_out, n_out=len(data.classes()))
layers = [l1, l2, l3, l4, l5]
return layers
# 学習モデル
model = Model(input_dtype='float32', layers_gen_func=layer_gen)
print model
# 学習モデルの学習パラメタを最適化するオブジェクト
optimizer = Optimizer(data, model)
# バッチ一回分の学習時に呼ばれる関数
def on_optimized():
optimizer.result.save()
optimizer.params_result.save()
# 最適化開始
optimizer.optimize(n_iter=100, n_batch=len(data.x_train) / 10,
is_total_test_enabled=False, on_optimized=on_optimized)
def test_setfield_escapes(self, cpu):
opt = Optimizer([Virtualize])
i0 = opt.add_input(Types.INT)
struct_descr = cpu.new_struct()
field_descr = cpu.new_field(struct_descr)
p0 = opt.add_operation(Types.REF, Operations.NEW, [], descr=struct_descr)
opt.add_operation(Types.VOID, Operations.SETFIELD, [p0, i0], descr=field_descr)
opt.add_operation(Types.VOID, Operations.FINISH, [p0])
ops = opt.build_operations()
assert len(ops) == 3
def test_objective_symmetric_wins(self):
o = Optimizer(rating_reg=0)
o.load_games([(1, 2, 1, 1), (2, 1, 1, 1)])
v1 = o.create_vars({1: {1: 2200}, 2: {1: 1800}}, [0, -1.01])
v2 = o.create_vars({1: {1: 2000}, 2: {1: 2000}}, [0, -1.01])
v3 = o.create_vars({1: {1: 1800}, 2: {1: 2200}}, [0, -1.01])
self.assertLess(o.objective(v2) / o.objective(v1), 0.9)
self.assertLess(o.objective(v2) / o.objective(v3), 0.9)
def test_objective_draw(self):
o = Optimizer(rating_reg=0)
o.load_games([(1, 2, 1, 2), (2, 1, 1, 2)])
v1 = o.create_vars({1: {1: 2200}, 2: {1: 1800}}, [0, -1.01])
v2 = o.create_vars({1: {1: 2000}, 2: {1: 2000}}, [0, -1.01])
v3 = o.create_vars({1: {1: 1800}, 2: {1: 2200}}, [0, -1.01])
self.assertLess(o.objective(v2), o.objective(v1))
self.assertLess(o.objective(v2), o.objective(v3))
def test_get_setfield(self, cpu):
opt = Optimizer([Virtualize])
i0 = opt.add_input(Types.INT)
struct_descr = cpu.new_struct()
field_descr = cpu.new_field(struct_descr)
p0 = opt.add_operation(Types.REF, Operations.NEW, [], descr=struct_descr)
opt.add_operation(Types.VOID, Operations.SETFIELD, [p0, i0], descr=field_descr)
i1 = opt.add_operation(Types.INT, Operations.GETFIELD, [p0], descr=field_descr)
ops = opt.build_operations()
assert len(ops) == 0
assert opt.getvalue(i1) is i0
def test_gradient(self):
o = Optimizer(func_hard_reg=0, func_soft_reg=0, time_delta=0,
rating_reg=0)
o.load_games([(1, 2, 1, 1)])
v = o.create_vars({1: {1: 2200}, 2: {1: 1800}}, (0, -1.01))
def o0(x):
save_x = v[0]
v[0] = x
res = o.objective(v)
v[0] = save_x
return res
def o1(x):
save_x = v[1]
v[1] = x
res = o.objective(v)
v[1] = save_x
return res
self.assertAlmostEqual(derivative(o0, v[0]), o.gradient(v)[0])
self.assertAlmostEqual(derivative(o1, v[1]), o.gradient(v)[1])
def test_subtraction(self):
opt = Optimizer([ConstantFold])
opt.add_operation(Types.INT, Operations.INT_SUB,
[opt.new_constant_int(1), opt.new_constant_int(0)]
)
ops = opt.build_operations()
assert len(ops) == 0
class TestOptimizer(unittest.TestCase):
def setUp(self):
roster_data = {
"players": [
{"name": "Kalpesh Shah", "skill": 3, "division": "West"},
{"name": "Larry Ward", "skill": 3, "division": "West"},
{"name": "Trent Miller", "skill": 3, "division": "West"},
{"name": "Katrina Brinkley", "skill": 2, "division": "West"},
{"name": "Dan Doepner", "skill": 2, "division": "West"},
{"name": "Kevin Dahl", "skill": 2, "division": "West"},
{"name": "Doug Nufer", "skill": 1, "division": "West"},
{"name": "Bill Schaefermeyer", "skill": 3, "division": "East"},
{"name": "James Morris", "skill": 3, "division": "East"},
{"name": "Justin Long", "skill": 3, "division": "East"},
{"name": "Joe Au", "skill": 2, "division": "East"},
{"name": "Joseph Hoyal", "skill": 2, "division": "East"},
{"name": "Eric Prusse", "skill": 2, "division": "East"},
{"name": "Maria Bates", "skill": 1, "division": "East"},
]
}
roster = Roster(roster_data)
matchmaker = Matchmaker()
teams = matchmaker.get_teams(roster)
matches = matchmaker.get_matches(teams)
self.optimizer = Optimizer(matches)
def tearDown(self):
self.matches = None
def test_matches_count(self):
optimized_matches = self.optimizer.get_optimized_matches()
self.assertEqual(21, len(optimized_matches))
def test_match_skill_difference(self):
optimized_matches = self.optimizer.get_optimized_matches()
for match in optimized_matches:
self.assertEqual(0, match.get_skill_difference())
def test_cant_fold(self):
opt = Optimizer([ConstantFold])
i0 = opt.add_input(Types.INT)
opt.add_operation(Types.INT, Operations.INT_ADD,
[i0, opt.new_constant_int(1)]
)
ops = opt.build_operations()
assert len(ops) == 1
def __init__(self, argv, reactor, objective):
""" Constructor.
"""
# Initialize the Optimizer object.
Optimizer.__init__(self, argv, reactor, objective)
class DPG:
def __init__(self,
config,
task,
directory,
callback=None,
summary_writer=None):
self.task = task
self.directory = directory
self.callback = callback
self.summary_writer = summary_writer
self.config = config
self.batch_size = config['batch_size']
self.n_episode = config['num_episode']
self.capacity = config['capacity']
self.history_len = config['history_len']
self.epsilon_decay = config['epsilon_decay']
self.epsilon_min = config['epsilon_min']
self.time_between_two_copies = config['time_between_two_copies']
self.update_interval = config['update_interval']
self.tau = config['tau']
self.action_dim = task.get_action_dim()
self.state_dim = task.get_state_dim() * self.history_len
self.critic_layers = [50, 50]
self.actor_layers = [50, 50]
self.actor_activation = task.get_activation_fn()
self._init_modules()
def _init_modules(self):
# Replay memory
self.replay_memory = ReplayMemory(history_len=self.history_len,
capacity=self.capacity)
# Actor critic network
self.ac_network = ActorCriticNet(
input_dim=self.state_dim,
action_dim=self.action_dim,
critic_layers=self.critic_layers,
actor_layers=self.actor_layers,
actor_activation=self.actor_activation,
scope='ac_network')
# Target network
self.target_network = ActorCriticNet(
input_dim=self.state_dim,
action_dim=self.action_dim,
critic_layers=self.critic_layers,
actor_layers=self.actor_layers,
actor_activation=self.actor_activation,
scope='target_network')
# Optimizer
self.optimizer = Optimizer(config=self.config,
ac_network=self.ac_network,
target_network=self.target_network,
replay_memory=self.replay_memory)
# Ops for updating target network
self.clone_op = self.target_network.get_clone_op(self.ac_network,
tau=self.tau)
# For tensorboard
self.t_score = tf.placeholder(dtype=tf.float32,
shape=[],
name='new_score')
tf.summary.scalar("score", self.t_score, collections=['dpg'])
self.summary_op = tf.summary.merge_all('dpg')
def set_summary_writer(self, summary_writer=None):
self.summary_writer = summary_writer
self.optimizer.set_summary_writer(summary_writer)
def choose_action(self, sess, state, epsilon=0.1):
x = numpy.asarray(numpy.expand_dims(state, axis=0),
dtype=numpy.float32)
action = self.ac_network.get_action(sess, x)[0]
return action + epsilon * numpy.random.randn(len(action))
def play(self, action):
r, new_state, termination = self.task.play_action(action)
return r, new_state, termination
def update_target_network(self, sess):
sess.run(self.clone_op)
def train(self, sess, saver=None):
num_of_trials = -1
for episode in range(self.n_episode):
frame = self.task.reset()
for _ in range(self.history_len + 1):
self.replay_memory.add(frame, 0, 0, 0)
for _ in range(self.config['T']):
num_of_trials += 1
epsilon = self.epsilon_min + \
max(self.epsilon_decay - num_of_trials, 0) / \
self.epsilon_decay * (1 - self.epsilon_min)
print("epi {}, frame {}k, epsilon {}".format(
episode, num_of_trials // 1000, epsilon))
if num_of_trials % self.update_interval == 0:
self.optimizer.train_one_step(sess, num_of_trials,
self.batch_size)
state = self.replay_memory.phi(frame)
action = self.choose_action(sess, state, epsilon)
r, new_frame, termination = self.play(action)
self.replay_memory.add(frame, action, r, termination)
frame = new_frame
if num_of_trials % self.time_between_two_copies == 0:
self.update_target_network(sess)
self.save(sess, saver)
if self.callback:
self.callback()
if termination:
score = self.task.get_total_reward()
summary_str = sess.run(self.summary_op,
feed_dict={self.t_score: score})
self.summary_writer.add_summary(summary_str, num_of_trials)
self.summary_writer.flush()
break
def evaluate(self, sess):
for episode in range(self.n_episode):
frame = self.task.reset()
for _ in range(self.history_len + 1):
self.replay_memory.add(frame, 0, 0, 0)
for _ in range(self.config['T']):
print("episode {}, total reward {}".format(
episode, self.task.get_total_reward()))
state = self.replay_memory.phi(frame)
action = self.choose_action(sess, state, self.epsilon_min)
r, new_frame, termination = self.play(action)
self.replay_memory.add(frame, action, r, termination)
frame = new_frame
if self.callback:
self.callback()
if termination:
break
def save(self, sess, saver, model_name='model.ckpt'):
if saver:
try:
checkpoint_path = os.path.join(self.directory, model_name)
saver.save(sess, checkpoint_path)
except:
pass
def load(self, sess, saver, model_name='model.ckpt'):
if saver:
try:
checkpoint_path = os.path.join(self.directory, model_name)
saver.restore(sess, checkpoint_path)
except:
pass
def main(args):
ts = time.strftime('%Y-%b-%d-%H:%M:%S', time.gmtime())
#### get data
# with open(os.path.join(args.data_dir, args.data_file), 'rb') as file:
# data = pickle.load(file)
data_obj = _Data()
train_data, valid_data, vocab_obj = data_obj.f_load_data_amazon(args)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
logger_obj = Logger()
logger_obj.f_add_writer(args)
### add count parameters
if not args.test:
now_time = datetime.datetime.now()
time_name = str(now_time.day) + "_" + str(now_time.month) + "_" + str(
now_time.hour) + "_" + str(now_time.minute)
model_file = os.path.join(
args.model_path,
args.model_name + "/model_best_" + time_name + ".pt")
args.model_file = model_file
print("vocab_size", len(vocab_obj.m_w2i))
### get model
# user_num = 10
network = REVIEWDI(vocab_obj, args, device=device)
total_param_num = 0
for name, param in network.named_parameters():
if param.requires_grad:
param_num = param.numel()
total_param_num += param_num
print(name, "\t", param_num)
print("total parameters num", total_param_num)
if not args.test:
optimizer = Optimizer(network.parameters(), args)
trainer = TRAINER(vocab_obj, args, device)
trainer.f_train(train_data, valid_data, network, optimizer, logger_obj)
if args.test:
print("=" * 10, "eval", "=" * 10)
# eval_obj = EVAL(vocab_obj, args, device)
# eval_obj.f_init_eval(network, args.model_file, reload_model=True)
# eval_obj.f_eval(valid_data)
print("=" * 10, "inference", "=" * 10)
infer = INFER(vocab_obj, args, device)
infer.f_init_infer(network, args.model_file, reload_model=True)
infer.f_inference(valid_data)
logger_obj.f_close_writer()
def train(verbose=True, **kwargs):
args = kwargs['args']
torch.cuda.set_device(args.local_rank)
dist.init_process_group(backend='nccl',
init_method='tcp://127.0.0.1:{}'.format(cfg.port),
world_size=torch.cuda.device_count(),
rank=args.local_rank)
setup_logger(cfg.respth)
logger = logging.getLogger()
## dataset
ds = CityScapes(cfg, mode='train')
sampler = torch.utils.data.distributed.DistributedSampler(ds)
dl = DataLoader(ds,
batch_size=cfg.ims_per_gpu,
shuffle=False,
sampler=sampler,
num_workers=cfg.n_workers,
pin_memory=True,
drop_last=True)
## model
net = Deeplab_v3plus(cfg)
net.train()
net.cuda()
net = nn.parallel.DistributedDataParallel(net,
device_ids=[
args.local_rank,
],
output_device=args.local_rank)
n_min = cfg.ims_per_gpu * cfg.crop_size[0] * cfg.crop_size[1] // 16
criteria = OhemCELoss(thresh=cfg.ohem_thresh, n_min=n_min).cuda()
## optimizer
optim = Optimizer(net, cfg.lr_start, cfg.momentum, cfg.weight_decay,
cfg.warmup_steps, cfg.warmup_start_lr, cfg.max_iter,
cfg.lr_power)
## train loop
loss_avg = []
st = glob_st = time.time()
diter = iter(dl)
n_epoch = 0
for it in range(cfg.max_iter):
try:
im, lb = next(diter)
if not im.size()[0] == cfg.ims_per_gpu: continue
except StopIteration:
n_epoch += 1
sampler.set_epoch(n_epoch)
diter = iter(dl)
im, lb = next(diter)
im = im.cuda()
lb = lb.cuda()
H, W = im.size()[2:]
lb = torch.squeeze(lb, 1)
optim.zero_grad()
logits = net(im)
loss = criteria(logits, lb)
loss.backward()
optim.step()
loss_avg.append(loss.item())
## print training log message
if it % cfg.msg_iter == 0 and not it == 0:
loss_avg = sum(loss_avg) / len(loss_avg)
lr = optim.lr
ed = time.time()
t_intv, glob_t_intv = ed - st, ed - glob_st
eta = int((cfg.max_iter - it) * (glob_t_intv / it))
eta = str(datetime.timedelta(seconds=eta))
msg = ', '.join([
'iter: {it}/{max_it}',
'lr: {lr:4f}',
'loss: {loss:.4f}',
'eta: {eta}',
'time: {time:.4f}',
]).format(it=it,
max_it=cfg.max_iter,
lr=lr,
loss=loss_avg,
time=t_intv,
eta=eta)
logger.info(msg)
loss_avg = []
st = ed
## dump the final model and evaluate the result
if verbose:
net.cpu()
save_pth = osp.join(cfg.respth, 'model_final.pth')
state = net.module.state_dict() if hasattr(
net, 'module') else net.state_dict()
if dist.get_rank() == 0: torch.save(state, save_pth)
logger.info('training done, model saved to: {}'.format(save_pth))
logger.info('evaluating the final model')
net.cuda()
net.eval()
evaluator = MscEval(cfg)
mIOU = evaluator(net)
logger.info('mIOU is: {}'.format(mIOU))
def main():
try:
os.mkdir(args.snapshot_path)
except:
pass
comm = chainermn.create_communicator()
device = comm.intra_rank
print("device", device, "/", comm.size)
cuda.get_device(device).use()
xp = cupy
dataset = gqn.data.Dataset(args.dataset_path)
hyperparams = HyperParameters()
hyperparams.generator_share_core = args.generator_share_core
hyperparams.generator_share_prior = args.generator_share_prior
hyperparams.inference_share_core = args.inference_share_core
hyperparams.inference_share_posterior = args.inference_share_posterior
if comm.rank == 0:
hyperparams.save(args.snapshot_path)
hyperparams.print()
model = Model(hyperparams, hdf5_path=args.snapshot_path)
model.to_gpu()
optimizer = Optimizer(model.parameters, communicator=comm)
sigma_t = hyperparams.pixel_sigma_i
pixel_var = xp.full(
(args.batch_size, 3) + hyperparams.image_size,
sigma_t**2,
dtype="float32")
pixel_ln_var = xp.full(
(args.batch_size, 3) + hyperparams.image_size,
math.log(sigma_t**2),
dtype="float32")
random.seed(0)
subset_indices = list(range(len(dataset.subset_filenames)))
current_training_step = 0
for iteration in range(args.training_iterations):
mean_kld = 0
mean_nll = 0
total_batch = 0
subset_size_per_gpu = len(subset_indices) // comm.size
start_time = time.time()
for subset_loop in range(subset_size_per_gpu):
random.shuffle(subset_indices)
subset_index = subset_indices[comm.rank]
subset = dataset.read(subset_index)
iterator = gqn.data.Iterator(subset, batch_size=args.batch_size)
for batch_index, data_indices in enumerate(iterator):
# shape: (batch, views, height, width, channels)
# range: [-1, 1]
images, viewpoints = subset[data_indices]
total_views = images.shape[1]
# sample number of views
num_views = random.choice(range(total_views))
query_index = random.choice(range(total_views))
if current_training_step == 0 and num_views == 0:
num_views = 1 # avoid OpenMPI error
if num_views > 0:
r = generate_observation_representation(
images, viewpoints, num_views, model)
else:
r = xp.zeros(
(args.batch_size, hyperparams.channels_r) +
hyperparams.chrz_size,
dtype="float32")
r = chainer.Variable(r)
query_images = images[:, query_index]
query_viewpoints = viewpoints[:, query_index]
# (batch * views, height, width, channels) -> (batch * views, channels, height, width)
query_images = query_images.transpose((0, 3, 1, 2))
# transfer to gpu
query_images = to_gpu(query_images)
query_viewpoints = to_gpu(query_viewpoints)
h0_gen, c0_gen, u_0, h0_enc, c0_enc = model.generate_initial_state(
args.batch_size, xp)
loss_kld = 0
hl_enc = h0_enc
cl_enc = c0_enc
hl_gen = h0_gen
cl_gen = c0_gen
ul_enc = u_0
xq = model.inference_downsampler.downsample(query_images)
for l in range(model.generation_steps):
inference_core = model.get_inference_core(l)
inference_posterior = model.get_inference_posterior(l)
generation_core = model.get_generation_core(l)
generation_piror = model.get_generation_prior(l)
h_next_enc, c_next_enc = inference_core.forward_onestep(
hl_gen, hl_enc, cl_enc, xq, query_viewpoints, r)
mean_z_q = inference_posterior.compute_mean_z(hl_enc)
ln_var_z_q = inference_posterior.compute_ln_var_z(hl_enc)
ze_l = cf.gaussian(mean_z_q, ln_var_z_q)
mean_z_p = generation_piror.compute_mean_z(hl_gen)
ln_var_z_p = generation_piror.compute_ln_var_z(hl_gen)
h_next_gen, c_next_gen, u_next_enc = generation_core.forward_onestep(
hl_gen, cl_gen, ul_enc, ze_l, query_viewpoints, r)
kld = gqn.nn.chainer.functions.gaussian_kl_divergence(
mean_z_q, ln_var_z_q, mean_z_p, ln_var_z_p)
loss_kld += cf.sum(kld)
hl_gen = h_next_gen
cl_gen = c_next_gen
ul_enc = u_next_enc
hl_enc = h_next_enc
cl_enc = c_next_enc
mean_x = model.generation_observation.compute_mean_x(ul_enc)
negative_log_likelihood = gqn.nn.chainer.functions.gaussian_negative_log_likelihood(
query_images, mean_x, pixel_var, pixel_ln_var)
loss_nll = cf.sum(negative_log_likelihood)
loss_nll /= args.batch_size
loss_kld /= args.batch_size
loss = loss_nll + loss_kld
model.cleargrads()
loss.backward()
optimizer.update(current_training_step)
if comm.rank == 0:
printr(
"Iteration {}: Subset {} / {}: Batch {} / {} - loss: nll: {:.3f} kld: {:.3f} - lr: {:.4e} - sigma_t: {:.6f}".
format(iteration + 1, subset_loop * comm.size + 1,
len(dataset), batch_index + 1,
len(subset) // args.batch_size,
float(loss_nll.data), float(loss_kld.data),
optimizer.learning_rate, sigma_t))
sf = hyperparams.pixel_sigma_f
si = hyperparams.pixel_sigma_i
sigma_t = max(
sf + (si - sf) *
(1.0 - current_training_step / hyperparams.pixel_n), sf)
pixel_var[...] = sigma_t**2
pixel_ln_var[...] = math.log(sigma_t**2)
total_batch += 1
current_training_step += comm.size
mean_kld += float(loss_kld.data)
mean_nll += float(loss_nll.data)
if comm.rank == 0:
model.serialize(args.snapshot_path)
if comm.rank == 0:
elapsed_time = time.time() - start_time
print(
"\033[2KIteration {} - loss: nll: {:.3f} kld: {:.3f} - lr: {:.4e} - sigma_t: {:.6f} - step: {} - elapsed_time: {:.3f} min".
format(iteration + 1, mean_nll / total_batch,
mean_kld / total_batch, optimizer.learning_rate,
sigma_t, current_training_step, elapsed_time / 60))
model.serialize(args.snapshot_path)
def get_pixel(coordinate):
return pyautogui.screenshot().getpixel(coordinate)
if __name__ == '__main__':
mouse = detect_mouse()
print("Mouse coordinates: {}".format(mouse))
field = Field()
print("First tetromino:")
current_tetromino = Tetromino.create(input())
next_tetromino = None
time.sleep(2)
while True:
next_tetromino = TETROMINO[get_pixel(mouse)]()
opt = Optimizer.get_optimal_drop(field, current_tetromino)
rotation = opt['tetromino_rotation']
column = opt['tetromino_column']
current_tetromino.rotate(rotation)
field.drop(current_tetromino, column)
keys = Optimizer.get_keystrokes(
rotation, column, {
'rotate_right': 'x',
'rotate_left': 'z',
'move_left': 'left',
'move_right': 'right',
'drop': ' '
})
pyautogui.typewrite(keys)
print(field)
current_tetromino = next_tetromino
def train():
args = parse_args()
torch.cuda.set_device(args.local_rank)
dist.init_process_group(backend='nccl',
init_method='tcp://127.0.0.1:33241',
world_size=torch.cuda.device_count(),
rank=args.local_rank)
setup_logger(respth)
# dataset
n_classes = 11
n_img_per_gpu = 16
n_workers = 8
cropsize = [448, 448]
data_root = '/home/ubuntu/zk/FaceParsingData/'
ds = FaceMask(data_root, cropsize=cropsize, mode='train')
sampler = torch.utils.data.distributed.DistributedSampler(ds)
dl = DataLoader(ds,
batch_size=n_img_per_gpu,
shuffle=False,
sampler=sampler,
num_workers=n_workers,
pin_memory=True,
drop_last=True)
# model
ignore_idx = -100
net = BiSeNet(n_classes=n_classes)
net.cuda()
net.train()
net = nn.parallel.DistributedDataParallel(net,
device_ids=[
args.local_rank,
],
output_device=args.local_rank)
score_thres = 0.7
n_min = n_img_per_gpu * cropsize[0] * cropsize[1] // 16
LossP = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
Loss2 = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
Loss3 = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
## optimizer
momentum = 0.9
weight_decay = 5e-4
lr_start = 1e-2
max_iter = 80000
power = 0.9
warmup_steps = 1000
warmup_start_lr = 1e-5
optim = Optimizer(model=net.module,
lr0=lr_start,
momentum=momentum,
wd=weight_decay,
warmup_steps=warmup_steps,
warmup_start_lr=warmup_start_lr,
max_iter=max_iter,
power=power)
## train loop
msg_iter = 50
loss_avg = []
st = glob_st = time.time()
diter = iter(dl)
epoch = 0
for it in range(max_iter):
try:
im, lb = next(diter)
if not im.size()[0] == n_img_per_gpu:
raise StopIteration
except StopIteration:
epoch += 1
sampler.set_epoch(epoch)
diter = iter(dl)
im, lb = next(diter)
im = im.cuda()
lb = lb.cuda()
H, W = im.size()[2:]
lb = torch.squeeze(lb, 1)
optim.zero_grad()
out, out16, out32 = net(im)
lossp = LossP(out, lb)
loss2 = Loss2(out16, lb)
loss3 = Loss3(out32, lb)
loss = lossp + loss2 + loss3
loss.backward()
optim.step()
loss_avg.append(loss.item())
# print training log message
if (it + 1) % msg_iter == 0:
loss_avg = sum(loss_avg) / len(loss_avg)
lr = optim.lr
ed = time.time()
t_intv, glob_t_intv = ed - st, ed - glob_st
eta = int((max_iter - it) * (glob_t_intv / it))
eta = str(datetime.timedelta(seconds=eta))
msg = ', '.join([
'it: {it}/{max_it}',
'lr: {lr:4f}',
'loss: {loss:.4f}',
'eta: {eta}',
'time: {time:.4f}',
]).format(it=it + 1,
max_it=max_iter,
lr=lr,
loss=loss_avg,
time=t_intv,
eta=eta)
logger.info(msg)
loss_avg = []
st = ed
if dist.get_rank() == 0:
if (it + 1) % 5000 == 0:
state = net.module.state_dict() if hasattr(
net, 'module') else net.state_dict()
if dist.get_rank() == 0:
torch.save(state, './res/cp/{}_iter.pth'.format(it))
evaluate(dspth='/home/ubuntu/zk/FaceParsingData/test-img',
cp='{}_iter.pth'.format(it))
# dump the final model
save_pth = osp.join(respth, 'model_final_diss.pth')
# net.cpu()
state = net.module.state_dict() if hasattr(net,
'module') else net.state_dict()
if dist.get_rank() == 0:
torch.save(state, save_pth)
logger.info('training done, model saved to: {}'.format(save_pth))
def optimize(self):
optimizer = Optimizer(self.plant, self.orderList,
Simulator(self.plant), Evaluator(self.plant))
result = optimizer.run()
print bestSolution(result)
from optimizer import Optimizer
from examples.CAPITA.PART1.nets import ND_net
import torch
train_queries = load('data/train_data_no_dealer.txt')
test_queries = load('data/test_data_no_dealer.txt')
#
# def neural_pred(network,i1,i2):
# d = torch.zeros(20)
# d[int(i1)] = 1.0
# d[int(i2)+10] = 1.0
# d = torch.autograd.Variable(d.unsqueeze(0))
# output = network.net(d)
# return output.squeeze(0)
#
#
# fc1 = FC(20,2)
# adam = torch.optim.Adam(fc1.parameters(), lr=0.5)
# swap_net = Network(fc1, 'no_dealer_net', neural_pred, optimizer=adam)
#with open('compare.pl') as f:
with open('NoDealer.pl') as f:
problog_string = f.read()
model = Model(problog_string, [ND_net])
optimizer = Optimizer(model, 32)
train_model(model, train_queries, 5, optimizer,test_iter=10, test = lambda x: Model.accuracy(x, test_queries), snapshot_iter=10000)
class LearnGraphTopolgy:
def __init__(self,
S,
is_data_matrix=False,
alpha=0,
maxiter=10000,
abstol=1e-6,
reltol=1e-4,
record_objective=False,
record_weights=False):
self.S = S
self.is_data_matrix = is_data_matrix
self.alpha = alpha
self.maxiter = maxiter
self.abstol = abstol
self.reltol = reltol
self.record_objective = record_objective
self.record_weights = record_weights
self.op = Operators()
self.obj = Objectives()
self.optimizer = Optimizer()
self.bic = 0
def learn_k_component_graph(self,
k=1,
rho=1e-2,
beta=1e4,
w0='naive',
fix_beta=True,
beta_max=1e6,
lb=0,
ub=1e10,
eigtol=1e-9,
eps=1e-4):
# number of nodes
n = self.S.shape[0]
# find an appropriate inital guess
if self.is_data_matrix or self.S.shape[0] != self.S.shape[1]:
raise Exception('Not implemented yet!')
else:
Sinv = np.linalg.pinv(self.S)
# if w0 is either "naive" or "qp", compute it, else return w0
w0 = self.optimizer.w_init(w0, Sinv)
# compute quantities on the initial guess
Lw0 = self.op.L(w0)
# l1-norm penalty factor
H = self.alpha * (np.eye(n) - np.ones((n, n)))
K = self.S + H
U0 = self.optimizer.U_update(Lw=Lw0, k=k)
lamda0 = self.optimizer.lamda_update(lb=lb,
ub=ub,
beta=beta,
U=U0,
Lw=Lw0,
k=k)
# save objective function value at initial guess
if self.record_objective:
nll0 = self.obj.negloglikelihood(Lw=Lw0, lamda=lamda0, K=K)
fun0 = nll0 + self.obj.prior(beta=beta, Lw=Lw0, lamda=lamda0, U=U0)
fun_seq = [fun0]
nll_seq = [nll0]
beta_seq = [beta]
if self.record_weights:
w_seq = [w0]
time_seq = [0]
start_time = time.time()
for _ in tqdm(range(self.maxiter)):
w = self.optimizer.w_update(w=w0,
Lw=Lw0,
U=U0,
beta=beta,
lamda=lamda0,
K=K)
Lw = self.op.L(w)
U = self.optimizer.U_update(Lw=Lw, k=k)
lamda = self.optimizer.lamda_update(lb=lb,
ub=ub,
beta=beta,
U=U,
Lw=Lw,
k=k)
# compute negloglikelihood and objective function values
if self.record_objective:
nll = self.obj.negloglikelihood(Lw=Lw, lamda=lamda, K=K)
fun = nll + self.obj.prior(beta=beta, Lw=Lw, lamda=lamda, U=U)
nll_seq.append(nll)
fun_seq.append(fun)
if self.record_weights:
w_seq.append(w)
# check for convergence
werr = np.abs(w0 - w)
has_w_converged = all(werr <= .5 * self.reltol *
(w + w0)) or all(werr <= self.abstol)
time_seq.append(time.time() - start_time)
if not fix_beta:
eigvals, _ = np.linalg.eigh(Lw)
if not fix_beta:
n_zero_eigenvalues = np.sum(np.abs(eigvals) < eigtol)
if k <= n_zero_eigenvalues:
beta = (1 + rho) * beta
elif k > n_zero_eigenvalues:
beta = beta / (1 + rho)
if beta > beta_max:
beta = beta_max
beta_seq.append(beta)
if has_w_converged:
break
# update estimates
w0 = w
U0 = U
lamda0 = lamda
Lw0 = Lw
K = self.S + H / (-Lw + eps)
# compute the adjancency matrix
Aw = self.op.A(w)
results = {
'laplacian': Lw,
'adjacency': Aw,
'w': w,
'lamda': lamda,
'U': U,
'elapsed_time': time_seq,
'convergence': has_w_converged,
'beta_seq': beta_seq
}
if self.record_objective:
results['obj_fun'] = fun_seq
results['nll'] = nll_seq
results['bic'] = 0
if self.record_weights:
results['w_seq'] = w_seq
return results
def learn_bipartite_graph(self, z=0, nu=1e4, m=7, w0='naive'):
# number of nodes
n = self.S.shape[0]
# find an appropriate inital guess
if self.is_data_matrix or self.S.shape[0] != self.S.shape[1]:
raise Exception('Not implemented yet!')
else:
Sinv = np.linalg.pinv(self.S)
# note now that S is always some sort of similarity matrix
J = np.ones((n, n)) * (1 / n)
# l1-norm penalty factor
H = self.alpha * (2 * np.eye(n) - np.ones((n, n)))
K = self.S + H
# if w0 is either "naive" or "qp", compute it, else return w0
w0 = self.optimizer.w_init(w0, Sinv)
Lips = 1 / min(np.linalg.eigvals(self.op.L(w0) + J))
# compute quantities on the initial guess
Aw0 = self.op.A(w0)
V0 = self.optimizer.V_update(Aw0, z)
psi0 = self.optimizer.psi_update(V0, Aw0)
Lips_seq = [Lips]
time_seq = [0]
start_time = time.time()
ll0 = self.obj.bipartite_nll(Lw=self.op.L(w0), K=K, J=J)
fun0 = ll0 + self.obj.bipartite_prior(nu=nu, Aw=Aw0, psi=psi0, V=V0)
fun_seq = [fun0]
nll_seq = [ll0]
if self.record_weights:
w_seq = [w0]
for _ in tqdm(range(self.maxiter)):
# we need to make sure that the Lipschitz constant is large enough
# in order to avoid divergence
while (1):
# compute the update for w
w = self.optimizer.bipartite_w_update(w=w0,
Aw=Aw0,
V=V0,
nu=nu,
psi=psi0,
K=K,
J=J,
Lips=Lips)
# compute the objective function at the updated value of w
fun_t = self.obj.bipartite_obj(Aw=self.op.A(w),
Lw=self.op.L(w),
V=V0,
psi=psi0,
K=K,
J=J,
nu=nu)
# check if the previous value of the objective function is
# smaller than the current one
Lips_seq.append(Lips)
if fun0 < fun_t:
# in case it is in fact larger, then increase Lips and recompute w
Lips = 2 * Lips
else:
# otherwise decrease Lips and get outta here!
Lips = .5 * Lips
if Lips < 1e-12:
Lips = 1e-12
break
Lw = self.op.L(w)
Aw = self.op.A(w)
V = self.optimizer.V_update(Aw=Aw, z=z)
psi = self.optimizer.psi_update(V=V, Aw=Aw)
# compute negloglikelihood and objective function values
ll = self.obj.bipartite_nll(Lw=Lw, K=K, J=J)
fun = ll + self.obj.bipartite_prior(nu=nu, Aw=Aw, psi=psi, V=V)
# save measurements of time and objective functions
time_seq.append(time.time() - start_time)
nll_seq.append(ll)
fun_seq.append(fun)
# compute the relative error and check the tolerance on the Adjacency
# matrix and on the objective function
if self.record_weights:
w_seq.append(w)
# check for convergence
werr = np.abs(w0 - w)
has_w_converged = all(werr <= .5 * self.reltol *
(w + w0)) or all(werr <= self.abstol)
if has_w_converged:
break
# update estimates
fun0 = fun
w0 = w
V0 = V
psi0 = psi
Aw0 = Aw
results = {
'laplacian': Lw,
'adjacency': Aw,
'w': w,
'psi': psi,
'V': V,
'elapsed_time': time_seq,
'Lips_seq': Lips_seq,
'convergence': has_w_converged,
'nu': nu
}
if self.record_objective:
results['obj_fun'] = fun_seq
results['nll'] = nll_seq
results['bic'] = 0
if self.record_weights:
results['w_seq'] = w_seq
return results
def train():
args = parse_args()
torch.cuda.set_device(args.local_rank)
dist.init_process_group(
backend = 'nccl',
init_method = 'tcp://127.0.0.1:33241',
world_size = torch.cuda.device_count(),
rank=args.local_rank
)
setup_logger(respth)
## dataset
n_classes = 19#19
n_img_per_gpu = 5
n_workers = 10#4
cropsize = [1024, 1024]
ds = CityScapes('./data/cityscapes', cropsize=cropsize, mode='train')
sampler = torch.utils.data.distributed.DistributedSampler(ds)
dl = DataLoader(ds,
batch_size = n_img_per_gpu,
shuffle = False,
sampler = sampler,
num_workers = n_workers,
pin_memory = True,
drop_last = True)
## model
ignore_idx = 255
device = torch.device("cuda")
net = ShelfNet(n_classes=n_classes)
net.load_state_dict(torch.load('./res/model_final_idd.pth'))
net.to(device)
# net.load_state_dict(checkpoint['model'].module.state_dict())
# net.cuda()
net.train()
# net.cuda()
# net.train()
# net = nn.parallel.DistributedDataParallel(net,
# device_ids = [args.local_rank, ],
# output_device = args.local_rank,
# find_unused_parameters=True
# )
score_thres = 0.7
n_min = n_img_per_gpu*cropsize[0]*cropsize[1]//16
LossP = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
Loss2 = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
Loss3 = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
## optimizer
momentum = 0.9
weight_decay = 5e-4
lr_start = 1e-2
max_iter = 80000
power = 0.9
warmup_steps = 1000
warmup_start_lr = 1e-5
optim = Optimizer(
model = net,
lr0 = lr_start,
momentum = momentum,
wd = weight_decay,
warmup_steps = warmup_steps,
warmup_start_lr = warmup_start_lr,
max_iter = max_iter,
power = power)
## train loop
msg_iter = 50
loss_avg = []
st = glob_st = time.time()
diter = iter(dl)
epoch = 0
for it in range(max_iter):
try:
im, lb = next(diter)
if not im.size()[0]==n_img_per_gpu: raise StopIteration
except StopIteration:
epoch += 1
sampler.set_epoch(epoch)
diter = iter(dl)
im, lb = next(diter)
im = im.cuda()
lb = lb.cuda()
H, W = im.size()[2:]
lb = torch.squeeze(lb, 1)
optim.zero_grad()
out, out16, out32 = net(im)
lossp = LossP(out, lb)
loss2 = Loss2(out16, lb)
loss3 = Loss3(out32, lb)
loss = lossp + loss2 + loss3
loss.backward()
optim.step()
loss_avg.append(loss.item())
## print training log message
if (it+1)%msg_iter==0:
loss_avg = sum(loss_avg) / len(loss_avg)
lr = optim.lr
ed = time.time()
t_intv, glob_t_intv = ed - st, ed - glob_st
eta = int((max_iter - it) * (glob_t_intv / it))
eta = str(datetime.timedelta(seconds=eta))
msg = ', '.join([
'it: {it}/{max_it}',
'lr: {lr:4f}',
'loss: {loss:.4f}',
'eta: {eta}',
'time: {time:.4f}',
]).format(
it = it+1,
max_it = max_iter,
lr = lr,
loss = loss_avg,
time = t_intv,
eta = eta
)
logger.info(msg)
loss_avg = []
st = ed
if it % (1000) == 0:#1000
## dump the final model
save_pth = osp.join(respth, 'shelfnet_model_it_%d.pth'%it)
#net.cpu()
#state = net.module.state_dict() if hasattr(net, 'module') else net.state_dict()
#if dist.get_rank() == 0: torch.save(state, save_pth)
torch.save(net.state_dict(),save_pth)
if it % (1000) == 0 and it > 0:#1000
evaluate(checkpoint=save_pth)
## dump the final model
save_pth = osp.join(respth, 'model_final.pth')
net.cpu()
state = net.module.state_dict() if hasattr(net, 'module') else net.state_dict()
if dist.get_rank()==0: torch.save(state, save_pth)
logger.info('training done, model saved to: {}'.format(save_pth))
def test_premutations(self):
optimizer = Optimizer(None, None, None)
all_permutations = optimizer.get_all_permutations(['A', 'B'])
assert len(all_permutations) == 2
all_permutations = optimizer.get_all_permutations(['A', 'B', 'C', 'D'])
assert len(all_permutations) == 24
def test_spherical_distance(self):
optimizer = Optimizer(None, None, None)
assert optimizer.spherical_distance(Coordinate(0.0, 0.0),
Coordinate(0.0, 0.0)) == 0
assert optimizer.spherical_distance(Coordinate(0.0, 1.1),
Coordinate(1.1, 1.1)) == 122
data_length = data_label.shape[0]
train_data_length = int(data_length * 0.8)
print("train_label_length:", train_data_length)
data_sample_train, data_sample_test = data_sample[:
train_data_length], data_sample[
train_data_length:]
data_label_train, data_label_test = data_label[:
train_data_length], data_label[
train_data_length:]
num_iterations = 1000
lr = 0.001
weight_decay = 0.01
train_batch_size = 16
test_batch_size = 100
data_handler = DataHander(16)
opt = Optimizer(lr=lr, momentum=0.9, iteration=0, gamma=0.0005, power=0.75)
initializer = Initializer()
data_handler.get_data(sample=data_sample_train, label=data_label_train)
data_handler.shuffle()
dnn = DNNNet(optimizer=opt.batch_gradient_descent_anneling,
initializer=initializer.xavier,
batch_size=train_batch_size,
weights_decay=weight_decay)
dnn.initial()
train_error = []
max_loss = math.inf
early_stopping_iter = 15
early_stopping_mark = 0
for i in range(num_iterations):
print('第', i, '次迭代')
opt.update_iteration(i)
def run_model(Xtest,
Xtrain,
Ytest,
Ytrain,
cond_ll,
kernel,
method,
name,
run_id,
num_inducing,
num_samples,
sparsify_factor,
to_optimize,
trans_class,
random_Z,
logging_level,
export_X,
latent_noise=0.001,
opt_per_iter=None,
max_iter=200,
n_threads=1,
model_image_file=None,
xtol=1e-3,
ftol=1e-5,
partition_size=3000):
"""
Fits a model to the data (Xtrain, Ytrain) using the method provided by 'method', and makes predictions on
'Xtest' and 'Ytest', and exports the result to csv files.
Parameters
----------
Xtest : ndarray
X of test points
Xtrain : ndarray
X of training points
Ytest : ndarray
Y of test points
Ytrain : ndarray
Y of traiing points
cond_ll : subclass of likelihood/Likelihood
Conditional log likelihood function used to build the model.
kernel : list
The kernel that the model uses. It should be an array, and size of the array should be same as the
number of latent processes. Each element should provide interface similar to ``ExtRBF`` class
method : string
The method to use to learns the model. It can be 'full', 'mix1', and 'mix2'
name : string
The name that will be used for logger file names, and results files names
run_id : object
ID of the experiment, which can be anything, and it will be included in the configuration file. It can provdie
for example a number referring to a particular test and train partition.
num_inducing : integer
Number of inducing points
num_samples : integer
Number of samples for estimating objective function and gradients
sparsify_factor : float
Can be any number and will be included in the configuration file. It will not determine
the number of inducing points
to_optimize : list
The set of parameters to optimize. It should be a list, and it can include 'll', 'mog', 'hyp', 'inducing' e.g.,
it can be ['ll', 'mog'] in which case posterior and ll will be optimised.
trans_class : subclass of DataTransformation
The class which will be used to transform data.
random_Z : boolean
Whether to initialise inducing points randomly on the training data. If False, inducing points
will be placed using k-means (or mini-batch k-mean) clustering. If True, inducing points will be placed randomly
on the training data.
logging_level : string
The logging level to use.
export_X : boolean
Whether to export X to csv files.
latent_noise : integer
The amount of latent noise to add to the kernel. A white noise of amount latent_noise will be
added to the kernel.
opt_per_iter: integer
Number of update of each subset of parameters in each iteration, e.g., {'mog': 15000, 'hyp': 25, 'll': 25}
max_iter: integer
Maximum of global iterations used on optimization.
n_threads: integer
Maximum number of threads used.
model_image_file: string
The image file from the which the model will be initialized.
xtol: float
Tolerance of 'X' below which the optimization is determined as converged.
ftol: float
Tolerance of 'f' below which the optimization is determined as converged.
partition_size: integer
The size which is used to partition training data (This is not the partition used for SGD).
Training data will be split to the partitions of size ``partition_size`` and calculations will be done on each
partition separately. This aim of this partitioning of data is to make algorithm memory efficient.
Returns
-------
folder : string
the name of the folder in which results are stored
model : model
the fitted model itself.
"""
if opt_per_iter is None:
opt_per_iter = {'mog': 40, 'hyp': 40, 'll': 40}
folder_name = name + '_' + ModelLearn.get_ID()
transformer = trans_class.get_transformation(Ytrain, Xtrain)
Ytrain = transformer.transform_Y(Ytrain)
Ytest = transformer.transform_Y(Ytest)
Xtrain = transformer.transform_X(Xtrain)
Xtest = transformer.transform_X(Xtest)
opt_max_fun_evals = None
total_time = None
timer_per_iter = None
tracker = None
export_model = False
git_hash, git_branch = get_git()
properties = {
'method': method,
'sparsify_factor': sparsify_factor,
'sample_num': num_samples,
'll': cond_ll.__class__.__name__,
'opt_max_evals': opt_max_fun_evals,
'opt_per_iter': opt_per_iter,
'xtol': xtol,
'ftol': ftol,
'run_id': run_id,
'experiment': name,
'max_iter': max_iter,
'git_hash': git_hash,
'git_branch': git_branch,
'random_Z': random_Z,
'latent_noise:': latent_noise,
'model_init': model_image_file
}
logger = ModelLearn.get_logger(
ModelLearn.get_output_path() + folder_name, folder_name,
logging_level)
logger.info('experiment started for:' + str(properties))
model_image = None
current_iter = None
if model_image_file is not None:
model_image = pickle.load(open(model_image_file + 'model.dump'))
opt_params = pickle.load(open(model_image_file + 'opt.dump'))
current_iter = opt_params['current_iter']
if model_image:
logger.info('loaded model - iteration started from: ' +
str(opt_params['current_iter']) + ' Obj fun: ' +
str(opt_params['obj_fun']) + ' fun evals: ' +
str(opt_params['total_evals']))
if method == 'full':
m = SAVIGP_SingleComponent(Xtrain,
Ytrain,
num_inducing,
cond_ll,
kernel,
num_samples,
None,
latent_noise,
False,
random_Z,
n_threads=n_threads,
image=model_image,
partition_size=partition_size)
_, timer_per_iter, total_time, tracker, total_evals = \
Optimizer.optimize_model(m, opt_max_fun_evals, logger, to_optimize, xtol, opt_per_iter, max_iter, ftol,
ModelLearn.opt_callback(folder_name), current_iter)
if method == 'mix1':
m = SAVIGP_Diag(Xtrain,
Ytrain,
num_inducing,
1,
cond_ll,
kernel,
num_samples,
None,
latent_noise,
False,
random_Z,
n_threads=n_threads,
image=model_image,
partition_size=partition_size)
_, timer_per_iter, total_time, tracker, total_evals = \
Optimizer.optimize_model(m, opt_max_fun_evals, logger, to_optimize, xtol, opt_per_iter, max_iter, ftol,
ModelLearn.opt_callback(folder_name), current_iter)
if method == 'mix2':
m = SAVIGP_Diag(Xtrain,
Ytrain,
num_inducing,
2,
cond_ll,
kernel,
num_samples,
None,
latent_noise,
False,
random_Z,
n_threads=n_threads,
image=model_image,
partition_size=partition_size)
_, timer_per_iter, total_time, tracker, total_evals = \
Optimizer.optimize_model(m, opt_max_fun_evals, logger, to_optimize, xtol, opt_per_iter, max_iter, ftol,
ModelLearn.opt_callback(folder_name), current_iter)
if method == 'gp':
m = GPy.models.GPRegression(Xtrain, Ytrain, kernel[0])
if 'll' in to_optimize and 'hyp' in to_optimize:
m.optimize('bfgs')
logger.debug("prediction started...")
y_pred, var_pred, nlpd = m.predict(Xtest, Ytest)
logger.debug("prediction finished")
if not (tracker is None):
ModelLearn.export_track(folder_name, tracker)
ModelLearn.export_train(folder_name, transformer.untransform_X(Xtrain),
transformer.untransform_Y(Ytrain), export_X)
ModelLearn.export_test(folder_name, transformer.untransform_X(Xtest),
transformer.untransform_Y(Ytest),
[transformer.untransform_Y(y_pred)],
[transformer.untransform_Y_var(var_pred)],
transformer.untransform_NLPD(nlpd), [''],
export_X)
if export_model and isinstance(m, SAVIGP):
ModelLearn.export_model(m, folder_name)
properties['total_time'] = total_time
properties['time_per_iter'] = timer_per_iter
properties['total_evals'] = total_evals
ModelLearn.export_configuration(folder_name, properties)
return folder_name, m
path = '/Users/michal/PycharmProjects/MRP/datasets/*.tsp'
data = Datasets(path)
# name = 'ali535'
name = 'berlin11_modified'
# name = 'berlin52'
# name = 'fl417'
# name = 'gr666'
# name = 'kroA100'
# name = 'kroA150'
# name = 'nrw1379'
# name = 'pr2392'
aco = Optimizer(ant_count=100, generations=100, alpha=1.0, beta=10.0, rho=0.5, q=10)
graph = Graph(data.datasets[name]['cost_matrix'], data.datasets[name]['rank'])
points_sequence, distance = aco(graph)
print('Found best distance: {} for sequence: {}'.format(distance, points_sequence))
def paint_graph(nodes, edges, title, cost):
# plot nodes
x = []
y = []
for point in nodes:
x.append(point[0])
y.append(point[1])
y = list(map(operator.sub, [max(y) for i in range(len(nodes))], y))
plt.plot(x, y, 'co', color='red')
plt.grid()
def parse_exp1(lexer):
exp = ExpParser.parse_exp0(lexer)
if lexer.look_ahead() == TokenKind.OP_POW:
line, op, _ = lexer.get_next_token()
exp = lua_exp.BinopExp(line, op, exp, ExpParser.parse_exp2(lexer))
return Optimizer.optimize_pow(exp)
def test_lt(self):
opt = Optimizer([IntBounds, GuardPropagation])
i0 = opt.add_input(Types.INT)
i1 = opt.add_operation(
Operations.INT_LT,
[i0, opt.new_constant_int(10)],
)
opt.add_operation(Operations.GUARD_TRUE, [i1])
opt.add_operation(Operations.INT_LT, [i0, opt.new_constant_int(15)])
ops = opt.build_operations()
assert len(ops) == 2
def train(opt):
# saving setting
opt.saved_path = opt.saved_path + opt.project
opt.log_path = os.path.join(opt.saved_path, 'tensorboard')
os.makedirs(opt.log_path, exist_ok=True)
os.makedirs(opt.saved_path, exist_ok=True)
# gpu setting
os.environ["CUDA_VISIBLE_DEVICES"] = '2, 3, 4, 5, 6'
gpu_number = torch.cuda.device_count()
# dataset setting
n_classes = 17
n_img_all_gpu = opt.batch_size * gpu_number
cropsize = [448, 448]
data_root = '/home/data2/DATASET/vschallenge'
num_workers = opt.num_workers
ds = FaceMask(data_root, cropsize=cropsize, mode='train')
dl = DataLoader(ds,
batch_size=n_img_all_gpu,
shuffle=True,
num_workers=num_workers,
drop_last=True)
ds_eval = FaceMask(data_root, cropsize=cropsize, mode='val')
dl_eval = DataLoader(ds_eval,
batch_size=n_img_all_gpu,
shuffle=True,
num_workers=num_workers,
drop_last=True)
ignore_idx = -100
net = BiSeNet(n_classes=n_classes)
# load last weights
if opt.load_weights is not None:
if opt.load_weights.endswith('.pth'):
weights_path = opt.load_weights
else:
weights_path = get_last_weights(opt.saved_path)
try:
last_step = int(
os.path.basename(weights_path).split('_')[-1].split('.')[0])
except:
last_step = 0
try:
ret = net.load_state_dict(torch.load(weights_path), strict=False)
except RuntimeError as e:
print(f'[Warning] Ignoring {e}')
print(
'[Warning] Don\'t panic if you see this, this might be because you load a pretrained weights '
'with different number of classes. The rest of the weights should be loaded already.'
)
print(
f'[Info] loaded weights: {os.path.basename(weights_path)}, resuming checkpoint from step: {last_step}'
)
else:
last_step = 0
print('[Info] initializing weights...')
writer = SummaryWriter(
opt.log_path +
f'/{datetime.datetime.now().strftime("%Y%m%d-%H%M%S")}/')
net = net.cuda()
net = nn.DataParallel(net)
score_thres = 0.7
n_min = n_img_all_gpu * cropsize[0] * cropsize[1] // opt.batch_size
LossP = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
Loss2 = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
Loss3 = OhemCELoss(thresh=score_thres, n_min=n_min, ignore_lb=ignore_idx)
# optimizer
momentum = 0.9
weight_decay = 5e-4
lr_start = opt.lr
max_iter = 80000
power = 0.9
warmup_steps = 1000
warmup_start_lr = 1e-5
optim = Optimizer(model=net.module,
lr0=lr_start,
momentum=momentum,
wd=weight_decay,
warmup_steps=warmup_steps,
warmup_start_lr=warmup_start_lr,
max_iter=max_iter,
power=power)
scheduler = torch.optim.lr_scheduler.ReduceLROnPlateau(optim.optim,
patience=3,
verbose=True)
# train loop
loss_avg = []
step = max(0, last_step)
max_iter = len(dl)
best_epoch = 0
epoch = 0
best_loss = 1e5
net.train()
try:
for epoch in range(opt.num_epochs):
last_epoch = step // max_iter
if epoch < last_epoch:
continue
epoch_loss = []
progress_bar = tqdm(dl)
for iter, data in enumerate(progress_bar):
if iter < step - last_epoch * max_iter:
progress_bar.update()
continue
try:
im = data['img']
lb = data['label']
lb = torch.squeeze(lb, 1)
im = im.cuda()
lb = lb.cuda()
optim.zero_grad()
out, out16, out32 = net(im)
lossp = LossP(out, lb)
loss2 = Loss2(out16, lb)
loss3 = Loss3(out32, lb)
loss = lossp + loss2 + loss3
if loss == 0 or not torch.isfinite(loss):
continue
loss.backward()
optim.step()
loss_avg.append(loss.item())
# print training log message
# progress_bar.set_description(
# 'Epoch: {}/{}. Iteration: {}/{}. p_loss: {:.5f}. 2_loss: {:.5f}. 3_loss: {:.5f}. loss_avg: {:.5f}'.format(
# epoch, opt.num_epochs, iter + 1, max_iter, lossp.item(),
# loss2.item(), loss3.item(), loss.item()))
print(
'p_loss: {:.5f}. 2_loss: {:.5f}. 3_loss: {:.5f}. loss_avg: {:.5f}'
.format(lossp.item(), loss2.item(), loss3.item(),
loss.item()))
writer.add_scalars('Lossp', {'train': lossp}, step)
writer.add_scalars('loss2', {'train': loss2}, step)
writer.add_scalars('loss3', {'train': loss3}, step)
writer.add_scalars('loss_avg', {'train': loss}, step)
# log learning_rate
lr = optim.lr
writer.add_scalar('learning_rate', lr, step)
step += 1
if step % opt.save_interval == 0 and step > 0:
save_checkpoint(net, f'Bisenet_{epoch}_{step}.pth')
print('checkpoint...')
except Exception as e:
print('[Erro]', traceback.format_exc())
print(e)
continue
scheduler.step(np.mean(epoch_loss))
if epoch % opt.val_interval == 0:
net.eval()
loss_p = []
loss_2 = []
loss_3 = []
for iter, data in enumerate(dl_eval):
with torch.no_grad():
im = data['img']
lb = data['label']
lb = torch.squeeze(lb, 1)
im = im.cuda()
lb = lb.cuda()
out, out16, out32 = net(im)
lossp = LossP(out, lb)
loss2 = Loss2(out16, lb)
loss3 = Loss3(out32, lb)
loss = lossp + loss2 + loss3
if loss == 0 or not torch.isfinite(loss):
continue
loss_p.append(lossp.item())
loss_2.append(loss2.item())
loss_3.append(loss3.item())
lossp = np.mean(loss_p)
loss2 = np.mean(loss_2)
loss3 = np.mean(loss_3)
loss = lossp + loss2 + loss3
print(
'Val. Epoch: {}/{}. p_loss: {:1.5f}. 2_loss: {:1.5f}. 3_loss: {:1.5f}. Total_loss: {:1.5f}'
.format(epoch, opt.num_epochs, lossp, loss2, loss3, loss))
writer.add_scalars('Total_loss', {'val': loss}, step)
writer.add_scalars('p_loss', {'val': lossp}, step)
writer.add_scalars('2_loss', {'val': loss2}, step)
writer.add_scalars('3_loss', {'val': loss3}, step)
if loss + opt.es_min_delta < best_loss:
best_loss = loss
best_epoch = epoch
save_checkpoint(net, f'Bisenet_{epoch}_{step}.pth')
net.train() # ??
# Early stopping
if epoch - best_epoch > opt.es_patience > 0:
print(
'[Info] Stop training at epoch {}. The lowest loss achieved is {}'
.format(epoch, loss))
break
except KeyboardInterrupt:
save_checkpoint(net, f'Bisenet_{epoch}_{step}.pth')
writer.close()
writer.close()
num_pts = [60]
y0 = np.linspace(1, 0, num_pts[0])
y0 = y0[1:-1]
all_times = []
all_wall_times = []
all_function_evals = []
all_nit = []
#### Iterate over number of points
for num in num_pts:
all_x = np.linspace(0, 1, num)
start = time.time()
opt = Optimizer(brachistochrone, y0, 1, 1)
# print(opt.gradient_func(y0))
opt.minimize()
print(funct_eval)
# set_trace()
# fit = minimize(fun, y0, method="BFGS")
end = time.time()
#### Saving Values
all_wall_times.append(end - start)
# all_function_evals.append(fit.nfev)
# all_nit.append(fit.nit)
#### Output for debugging
print("-------------")
def service_inputs():
cmd = raw_input("> ").strip()
import interpretor
import optimizer
import ops
import db
import parse_expr
import parse_sql
from interpretor import PullBasedInterpretor, PushBasedInterpretor
from optimizer import Optimizer
from ops import Print
from db import Database
from parse_expr import parse as _parse_expr
from parse_sql import parse as _parse_sql
_db = Database()
if cmd == "q":
return
elif cmd == "":
pass
elif cmd.startswith("help"):
print(HELPTEXT)
elif cmd.lower() == "reload":
reload(parse_expr)
reload(db)
reload(ops)
reload(parse_sql)
reload(optimizer)
reload(interpretor)
from parse_expr import parse as _parse_expr
from db import Database
from ops import Print
from parse_sql import parse as _parse_sql
from optimizer import Optimizer
from interpretor import PullBasedInterpretor, PushBasedInterpretor
elif cmd.upper().startswith("TRACE"):
traceback.print_exc()
elif cmd.upper().startswith("PARSE"):
q = cmd[len("PARSE"):]
ast = None
try:
ast = _parse_expr(q)
except Exception as err_expr:
try:
ast = _parse_sql(q)
except Exception as err:
print("ERROR:", err)
if ast:
print(ast)
elif cmd.upper().startswith("SHOW TABLES"):
for tablename in _db.tablenames:
print tablename
elif cmd.upper().startswith("SHOW "):
tname = cmd[len("SHOW "):].strip()
if tname in _db:
print "Schema for %s" % tname
t = _db[tname]
for field in t.fields:
if t.rows:
typ = type(t.rows[0][field])
else:
typ = "?"
print field, "\t", typ
else:
print "%s not in database" % tname
else:
try:
plan = _parse_sql(cmd)
opt = Optimizer(_db)
interp = PullBasedInterpretor(_db)
#interp = PushBasedInterpretor(_db)
plan = opt(plan)
print(plan)
for row in interp(plan):
print row
except Exception as err:
print("ERROR:", err)
del _db
service_inputs()
def main(args):
ts = time.strftime('%Y-%b-%d-%H:%M:%S', time.gmtime())
#### get data
set_seed(1111)
data_obj = _Data()
train_data, valid_data, vocab_obj = data_obj.f_load_data_amazon(args)
device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
logger_obj = Logger()
logger_obj.f_add_writer(args)
### add count parameters
if args.train:
now_time = datetime.datetime.now()
time_name = str(now_time.month)+"_"+str(now_time.day)+"_"+str(now_time.hour)+"_"+str(now_time.minute)
model_file = os.path.join(args.model_path, args.model_name+"/model_best_"+time_name+"_"+args.data_name+".pt")
args.model_file = model_file
print("vocab_size", len(vocab_obj.m_w2i))
### get model
# user_num = 10
network = REVIEWDI(vocab_obj, args, device=device)
total_param_num = 0
for name, param in network.named_parameters():
if param.requires_grad:
param_num = param.numel()
total_param_num += param_num
print(name, "\t", param_num)
print("total parameters num", total_param_num)
if args.train:
optimizer = Optimizer(network.parameters(), args)
trainer = TRAINER(vocab_obj, args, device)
trainer.f_train(train_data, valid_data, network, optimizer, logger_obj)
if args.test or args.eval:
print("="*10, "test", "="*10)
infer = INFER(vocab_obj, args, device)
infer.f_init_infer(network, args.model_file, reload_model=True)
infer.f_inference(valid_data)
if args.eval:
print("="*10, "eval", "="*10)
eval_obj = EVAL(vocab_obj, args, device)
eval_obj.f_init_eval(network, args.model_file, reload_model=True)
eval_obj.f_eval(valid_data)
# infer = INFER(vocab_obj, args, device)
# infer.f_init_infer(network, args.model_file, reload_model=True)
# input_text = "verrry cheaply constructed , not as comfortable as i expected . i have been wearing this brand , but the first time i wore it , it was a little more than a few days ago . i have been wearing this brand before , so far , no complaints . i will be ordering more in different colors . update : after washing & drying , i will update after washing . after washing , this is a great buy . the fabric is not as soft as it appears to be made of cotton material . <eos>"
# infer.f_search_text(input_text, train_data)
logger_obj.f_close_writer()
def main():
parser = argparse.ArgumentParser()
parser.add_argument('--save', '-s', dest='save_model', action='store_true')
parser.set_defaults(save=False)
args = parser.parse_args()
if args.save_model:
print "Model will be saved"
else:
print "Model will not be saved"
sess = tf.Session()
state_ops = StateOps()
opt_net = Optimizer()
mnist = input_data.read_data_sets("MNIST_data/", one_hot=True)
net = MLP(opt_net)
snfs = []
# Generate the set of SNFs
print "Generating SNFs..."
for i in range(num_SNFs):
snf = SNF()
snfs.append(snf)
print "Initializing replay memory..."
replay_memory = []
# Add some initial states to the replay memory
for i in range(replay_mem_start_size):
snf = random.choice(snfs)
# Initializer computes a random point and the SNF loss
state = State(snf, state_ops, sess)
replay_memory.append(state)
init = tf.initialize_all_variables()
sess.run(init)
best_loss = np.float('inf')
best_accuracy = 0
# Training loop
for i in range(num_iterations):
batch_losses = []
batch_loss_change_sign = []
batch_grads = []
batch_counters = []
for j in range(batch_size):
# Retrieve a random starting point from the replay memory
state = random.choice(replay_memory)
snf = state.snf
if state.counter >= episode_length:
snf = random.choice(snfs)
state = State(snf, state_ops, sess)
batch_counters.append(state.counter)
prev_counter = state.counter
# The RNN state is initially zero but this will become
# rarer as old states are put back into the replay memory
feed_dict = {
opt_net.point: state.point,
opt_net.variances: snf.variances,
opt_net.weights: snf.weights,
opt_net.hyperplanes: snf.hyperplanes,
opt_net.initial_rnn_state: state.rnn_state
}
res = sess.run([
opt_net.new_point, opt_net.rnn_state_out,
opt_net.loss_change_sign, opt_net.total_loss
] + [g for g, v in opt_net.gvs],
feed_dict=feed_dict)
new_point, rnn_state_out, loss_change_sign, loss = res[0:4]
grads_out = res[4:]
# Prepare a new state to add to the replay memory
state = State(snf, state_ops, sess)
state.point = new_point
state.rnn_state = rnn_state_out
state.counter = prev_counter + seq_length
# Prevent these attributes from being used until their values are overridden
state.loss = None
state.grads = None
# Only the last state is added. Adding more may result in a loss
# of diversity in the replay memory
replay_memory.append(state)
if len(replay_memory) > replay_memory_max_size:
replay_memory = replay_memory[-replay_memory_max_size:]
batch_losses.append(loss)
batch_loss_change_sign.append(loss_change_sign)
batch_grads.append(grads_out)
loss = np.mean(batch_losses)
avg_loss_change_sign = np.mean(batch_loss_change_sign)
avg_counter = np.mean(batch_counters)
total_grads = batch_grads[0]
for j in range(1, batch_size):
for k in range(len(batch_grads[j])):
total_grads[k] += batch_grads[j][k]
total_grads = [j / batch_size for j in total_grads]
#===# Train the optimizer #===#
# By the derivative sum rule, the average of the derivatives (calculated here)
# is identical to the derivative of the average (the usual method).
feed_dict = {}
for j in range(len(opt_net.grads_input)):
feed_dict[opt_net.grads_input[j][0]] = total_grads[j]
_ = sess.run([opt_net.train_step], feed_dict=feed_dict)
if i % summary_freq == 0 and i > 0:
print "{:>3}{:>10.3}{:>10.3}{:>10.3}".format(
i, loss, avg_loss_change_sign, avg_counter)
# Save model
if args.save_model:
accuracies = []
for k in range(1):
# Evaluate on the MNIST MLP
sess.run(net.init) # Reset parameters of the net to be trained
rnn_state = np.zeros(
[net.num_params, net.opt_net.cell.state_size])
for j in range(net.batches):
batch_x, batch_y = mnist.train.next_batch(net.batch_size)
# Compute gradients
grads = sess.run(net.grads,
feed_dict={
net.x: batch_x,
net.y_: batch_y
})
# Compute update
feed_dict = {
net.opt_net.input_grads: np.reshape(grads, [1, -1, 1]),
net.opt_net.initial_rnn_state: rnn_state
}
[update, rnn_state] = sess.run([
net.opt_net.update, net.opt_net.rnn_state_out_compare
],
feed_dict=feed_dict)
# Update MLP parameters
_ = sess.run([net.opt_net_train_step],
feed_dict={net.update: update})
accuracy = sess.run(net.accuracy,
feed_dict={
net.x: mnist.test.images,
net.y_: mnist.test.labels
})
accuracies.append(accuracy)
a = np.mean(accuracies)
if a > best_accuracy:
best_accuracy = a
#best_loss = loss
saver = tf.train.Saver(tf.trainable_variables())
saver.save(sess, save_path)
print "{:>3}{:>10.3}{:>10.3}{:>10.3}{:>10.3} (S)".format(
i, loss, avg_loss_change_sign, avg_counter, a)
else:
print "{:>3}{:>10.3}{:>10.3}{:>10.3}{:>10.3}".format(
i, loss, avg_loss_change_sign, avg_counter, a)
# Load data
data = Data()
data.load_dictionaries()
# Load model
model = Model(data)
model.input_name = "best"
model.output_name = "final"
model.load()
# Model loss function
loss = Loss()
# Optimizer
optimizer = Optimizer(model)
# Begin epochs
for epoch in range(config["num_epochs"]):
print("[EPOCH]", epoch + 1)
# Process batches
for caption, image_feature in data:
pass
# Pass data through model
caption, image_feature = model(caption, image_feature)
# Compute loss
cost = loss(caption, image_feature)
def visualize(network,
layer,
idx,
img_shape=(3, 224, 224),
init_range=(0, 1),
max_iter=400,
lr=1,
sigma=0,
debug=False):
"""
Perform standard Deep Dream-style visualization on the
network.
Parameters:
network: the network to be run, a torch module
layer: the layer of the network that the desired neuron
to visualize is part of, also a torch module
idx: a tuple of indexes into the output of the given
layer (like (0,0,0,0) for a BCHW conv layer) that
extracts the desired neuron
img_shape: a tuple specifying the shape of the images the
network takes in, in CHW form (a batch dimension is
expected by Optimizer and so is automatically added)
init_range: the range of values to randomly initialize
the image to
max_iter: the maximum number of iterations to run
the optimization for
lr: the 'learning rate' (the multiplier of the gradient
as it's added to the image at each step;
sigma: the standard deviation (or list of stddevs)of
a Gaussian filter that smooths the image each iteration,
standard for inception loop-style visualization
debug: prints loss at every iteration if true, useful for
finding the right learning rateo
Returns:
optimized image
loss for the last iteration
"""
# partial application, since the index can't be passed in optimizer code
loss_func = partial(specific_output_loss, idx=idx)
optimizer = Optimizer(network, layer, loss_func)
# set the 'target' optimization to be very high -- just want
# to increase it as much as possible
# since optimizer is actually gradient descent, make it negative
# TODO: allow selection of populations, not just single neurons
target_shape = (1, )
target = torch.ones(*target_shape) * 100
target = target.cuda()
# now start optimization
rand_img = torch_rand_range(img_shape, init_range).unsqueeze(0).cuda()
return optimizer.optimize(rand_img,
target,
max_iter=max_iter,
lr=lr,
sigma=sigma,
debug=debug)
def main():
try:
os.mkdir(args.snapshot_directory)
except:
pass
xp = np
using_gpu = args.gpu_device >= 0
if using_gpu:
cuda.get_device(args.gpu_device).use()
xp = cupy
dataset = gqn.data.Dataset(args.dataset_directory)
hyperparams = HyperParameters()
hyperparams.generator_share_core = args.generator_share_core
hyperparams.generator_share_prior = args.generator_share_prior
hyperparams.generator_generation_steps = args.generation_steps
hyperparams.inference_share_core = args.inference_share_core
hyperparams.inference_share_posterior = args.inference_share_posterior
hyperparams.pixel_n = args.pixel_n
hyperparams.channels_chz = args.channels_chz
hyperparams.generator_channels_u = args.channels_u
hyperparams.inference_channels_map_x = args.channels_map_x
hyperparams.pixel_sigma_i = args.initial_pixel_sigma
hyperparams.pixel_sigma_f = args.final_pixel_sigma
hyperparams.save(args.snapshot_directory)
hyperparams.print()
model = Model(hyperparams, snapshot_directory=args.snapshot_directory)
if using_gpu:
model.to_gpu()
optimizer = Optimizer(model.parameters,
mu_i=args.initial_lr,
mu_f=args.final_lr)
optimizer.print()
if args.with_visualization:
figure = gqn.imgplot.figure()
axis1 = gqn.imgplot.image()
axis2 = gqn.imgplot.image()
axis3 = gqn.imgplot.image()
figure.add(axis1, 0, 0, 1 / 3, 1)
figure.add(axis2, 1 / 3, 0, 1 / 3, 1)
figure.add(axis3, 2 / 3, 0, 1 / 3, 1)
plot = gqn.imgplot.window(
figure, (500 * 3, 500),
"Query image / Reconstructed image / Generated image")
plot.show()
sigma_t = hyperparams.pixel_sigma_i
pixel_var = xp.full((args.batch_size, 3) + hyperparams.image_size,
sigma_t**2,
dtype="float32")
pixel_ln_var = xp.full((args.batch_size, 3) + hyperparams.image_size,
math.log(sigma_t**2),
dtype="float32")
num_pixels = hyperparams.image_size[0] * hyperparams.image_size[1] * 3
current_training_step = 0
for iteration in range(args.training_iterations):
mean_kld = 0
mean_nll = 0
mean_mse = 0
total_batch = 0
start_time = time.time()
for subset_index, subset in enumerate(dataset):
iterator = gqn.data.Iterator(subset, batch_size=args.batch_size)
for batch_index, data_indices in enumerate(iterator):
# shape: (batch, views, height, width, channels)
# range: [-1, 1]
images, viewpoints = subset[data_indices]
# (batch, views, height, width, channels) -> (batch, views, channels, height, width)
images = images.transpose((0, 1, 4, 2, 3))
total_views = images.shape[1]
# sample number of views
num_views = random.choice(range(total_views + 1))
query_index = random.choice(range(total_views))
if num_views > 0:
r = model.compute_observation_representation(
images[:, :num_views], viewpoints[:, :num_views])
else:
r = xp.zeros((args.batch_size, hyperparams.channels_r) +
hyperparams.chrz_size,
dtype="float32")
r = chainer.Variable(r)
query_images = images[:, query_index]
query_viewpoints = viewpoints[:, query_index]
# transfer to gpu
query_images = to_gpu(query_images)
query_viewpoints = to_gpu(query_viewpoints)
h0_gen, c0_gen, u_0, h0_enc, c0_enc = model.generate_initial_state(
args.batch_size, xp)
loss_kld = 0
hl_enc = h0_enc
cl_enc = c0_enc
hl_gen = h0_gen
cl_gen = c0_gen
ul_enc = u_0
xq = model.inference_downsampler.downsample(query_images)
for l in range(model.generation_steps):
inference_core = model.get_inference_core(l)
inference_posterior = model.get_inference_posterior(l)
generation_core = model.get_generation_core(l)
generation_piror = model.get_generation_prior(l)
h_next_enc, c_next_enc = inference_core.forward_onestep(
hl_gen, hl_enc, cl_enc, xq, query_viewpoints, r)
mean_z_q = inference_posterior.compute_mean_z(hl_enc)
ln_var_z_q = inference_posterior.compute_ln_var_z(hl_enc)
ze_l = cf.gaussian(mean_z_q, ln_var_z_q)
mean_z_p = generation_piror.compute_mean_z(hl_gen)
ln_var_z_p = generation_piror.compute_ln_var_z(hl_gen)
h_next_gen, c_next_gen, u_next_enc = generation_core.forward_onestep(
hl_gen, cl_gen, ul_enc, ze_l, query_viewpoints, r)
kld = gqn.nn.chainer.functions.gaussian_kl_divergence(
mean_z_q, ln_var_z_q, mean_z_p, ln_var_z_p)
loss_kld += cf.sum(kld)
hl_gen = h_next_gen
cl_gen = c_next_gen
ul_enc = u_next_enc
hl_enc = h_next_enc
cl_enc = c_next_enc
mean_x = model.generation_observation.compute_mean_x(ul_enc)
negative_log_likelihood = gqn.nn.chainer.functions.gaussian_negative_log_likelihood(
query_images, mean_x, pixel_var, pixel_ln_var)
loss_nll = cf.sum(negative_log_likelihood)
loss_mse = cf.mean_squared_error(mean_x, query_images)
loss_nll /= args.batch_size
loss_kld /= args.batch_size
loss = loss_nll + loss_kld
model.cleargrads()
loss.backward()
optimizer.update(current_training_step)
if args.with_visualization and plot.closed() is False:
axis1.update(make_uint8(query_images[0]))
axis2.update(make_uint8(mean_x.data[0]))
with chainer.no_backprop_mode():
generated_x = model.generate_image(
query_viewpoints[None, 0], r[None, 0], xp)
axis3.update(make_uint8(generated_x[0]))
printr(
"Iteration {}: Subset {} / {}: Batch {} / {} - loss: nll_per_pixel: {:.6f} mse: {:.6f} kld: {:.6f} - lr: {:.4e} - sigma_t: {:.6f}"
.format(iteration + 1, subset_index + 1, len(dataset),
batch_index + 1, len(iterator),
float(loss_nll.data) / num_pixels,
float(loss_mse.data), float(loss_kld.data),
optimizer.learning_rate, sigma_t))
sf = hyperparams.pixel_sigma_f
si = hyperparams.pixel_sigma_i
sigma_t = max(
sf + (si - sf) *
(1.0 - current_training_step / hyperparams.pixel_n), sf)
pixel_var[...] = sigma_t**2
pixel_ln_var[...] = math.log(sigma_t**2)
total_batch += 1
current_training_step += 1
mean_kld += float(loss_kld.data)
mean_nll += float(loss_nll.data)
mean_mse += float(loss_mse.data)
model.serialize(args.snapshot_directory)
elapsed_time = time.time() - start_time
print(
"\033[2KIteration {} - loss: nll_per_pixel: {:.6f} mse: {:.6f} kld: {:.6f} - lr: {:.4e} - sigma_t: {:.6f} - step: {} - elapsed_time: {:.3f} min"
.format(iteration + 1, mean_nll / total_batch / num_pixels,
mean_mse / total_batch, mean_kld / total_batch,
optimizer.learning_rate, sigma_t, current_training_step,
elapsed_time / 60))
def gen_one_image(network,
layer,
image,
noise_level,
loss_func,
constant_area=0,
max_iter=1000,
lr=np.linspace(10, 0.5, 1000),
sigma=0,
grayscale=False,
debug=False):
"""
Generate a single modified stimulus from a source image.
(This function is primarily for use by other wrappers).
Parameters:
layer: the actual layer object, part of the network, that
you're extracting features from for the generation
image: a single image, in BCHW format, on the same device
as the network (for now just GPU)
grayscale: whether or not the optimization should be done in
grayscale (enforcing the RGB channels stay the same)
other arguments are same as std_generate
"""
# constant_area's default is actually dependent on image
# so 0 there is just a non-None placeholder
# set to the center (max_dim / 5) pixels by default
if constant_area == 0:
h_center = int(image.shape[2] / 2)
w_center = int(image.shape[3] / 2)
h_span = int(image.shape[2] / 10)
w_span = int(image.shape[3] / 10)
constant_area = (h_center - h_span, h_center + h_span,
w_center - w_span, w_center + w_span)
with torch.no_grad():
acts = []
hook = layer.register_forward_hook(lambda m, i, o: acts.append(o))
_ = network(image)
act = acts[0]
hook.remove()
noisy_act = add_noise(act, noise_level)
optimizer = Optimizer(network, layer, loss_func)
new_img, loss = optimizer.optimize(image,
noisy_act,
constant_area=constant_area,
max_iter=max_iter,
lr=lr,
sigma=sigma,
clip_image=True,
grayscale=grayscale,
debug=debug)
return new_img.detach().cpu().numpy().transpose(0, 2, 3, 1).squeeze(), loss
def test_ge_reverse(self):
opt = Optimizer([IntBounds, GuardPropagation])
i0 = opt.add_input(Types.INT)
i1 = opt.add_operation(Operations.INT_LT,
[i0, opt.new_constant_int(5)])
opt.add_operation(Operations.GUARD_TRUE, [i1])
i2 = opt.add_operation(Operations.INT_GE,
[i0, opt.new_constant_int(7)])
opt.add_operation(Operations.GUARD_FALSE, [i2])
ops = opt.build_operations()
assert len(ops) == 2
assert opt.getvalue(i2).getint() == 0
from train import train_model
from data_loader import load
from examples.NIPS.MNIST.mnist import test_MNIST, MNIST_Net, neural_predicate
from model import Model
from optimizer import Optimizer
from network import Network
import torch
queries = load('train_data.txt')
with open('addition.pl') as f:
problog_string = f.read()
network = MNIST_Net()
net = Network(network, 'mnist_net', neural_predicate)
net.optimizer = torch.optim.Adam(network.parameters(),lr = 0.001)
model = Model(problog_string, [net], caching=False)
optimizer = Optimizer(model, 2)
train_model(model,queries, 1, optimizer,test_iter=1000,test=test_MNIST,snapshot_iter=10000)
from Hamiltonian.hamiltonian import Hamiltonian # noqa: 401
from Wavefunction.wavefunction import Wavefunction # noqa: 401
from sampler import Sampler # noqa: 401
"""
Restricted Boltzmann Machine with Gibbs sampling.
Alternative, Metropolis Hastings algorithm for selection of
configurations. Optimizing using Gradient descent.
"""
step_metropolis = 1.0
step_importance = 0.01
learning_rate = 0.1
gradient_iterations = 100
opt = Optimizer(learning_rate)
# Initialize the variational parameters
def non_interaction_case(monte_carlo_cycles, num_particles, num_dimensions,
hidden_nodes):
"""Run Restricted Boltzmann Machine."""
# Initialize weights and biases
visible_nodes = num_particles*num_dimensions
a_i = np.random.normal(0, 1, visible_nodes)
b_j = np.random.normal(0, 1, hidden_nodes)
W_ij = np.random.normal(0, 1, (visible_nodes, hidden_nodes))
# a_i = np.random.rand(visible_nodes)
# b_j = np.random.rand(hidden_nodes)
# W_ij = np.random.rand(visible_nodes, hidden_nodes)