def run(N, K, S):
random.seed(S)
seed(S)
s = ""
for i in range(K):
s += choice("abcdefghijklmnopqrstuvwxyz")
Q = randint(1, N+1)
trip = {}
curr = 1
for i in s:
if (curr, i) in trip:
curr = trip[(curr, i)]
else:
dest = randint(1, N+1)
trip[(curr, i)] = dest
curr = dest
M = randint(K, MAXM+1)
tent = 0
while tent < 100 and len(trip) != M:
curr = randint(1, N+1)
c = choice("abcdefghijklmnopqrstuvwxyz")
if (curr, c) not in trip:
dest = randint(1, N+1)
trip[(curr, c)] = dest
else:
tent += 1
print len(trip), N, K
for i in s:
print i,
print
for i in trip:
print i[0], trip[i], i[1]
def test_imsave():
# The goal here is that the user can specify an output logical DPI
# for the image, but this will not actually add any extra pixels
# to the image, it will merely be used for metadata purposes.
# So we do the traditional case (dpi == 1), and the new case (dpi
# == 100) and read the resulting PNG files back in and make sure
# the data is 100% identical.
from numpy import random
random.seed(1)
data = random.rand(256, 128)
buff_dpi1 = io.BytesIO()
plt.imsave(buff_dpi1, data, dpi=1)
buff_dpi100 = io.BytesIO()
plt.imsave(buff_dpi100, data, dpi=100)
buff_dpi1.seek(0)
arr_dpi1 = plt.imread(buff_dpi1)
buff_dpi100.seek(0)
arr_dpi100 = plt.imread(buff_dpi100)
assert arr_dpi1.shape == (256, 128, 4)
assert arr_dpi100.shape == (256, 128, 4)
assert_array_equal(arr_dpi1, arr_dpi100)
def setup_method(self):
use_solver(useUmfpack=False)
n = 40
d = arange(n) + 1
self.n = n
self.A = spdiags((d, 2*d, d[::-1]), (-3, 0, 5), n, n)
random.seed(1234)
def __init__(self, x, y, input_len, sigma=1.0,
learning_rate=0.5, random_seed=None):
"""
initializes a self organizing maps.
x,y - dimensions of the som
input_len - number of the elements of the vectors in input
sigma - spread of the neighborhood function (gaussian), needs to be adequate to the dimensions of the map.
(at the iteration t we have sigma(t) = sigma / (1 + t/t) where t is #num_iteration/2)
learning_rate - initial learning rate
(at the iteration t we have learning_rate(t) = learning_rate / (1 + t/t) where t is #num_iteration/2)
random_seed, random seed to use.
"""
if sigma >= x / 2.0 or sigma >= y / 2.0:
warn('warning: sigma is too high for the dimension of the map.')
random.seed(seed=random_seed)
self.random_generator = random
self.learning_rate = learning_rate
self.sigma = sigma
# random initialization
self.weights = self.random_generator.rand(x, y, input_len) * 2 - 1
# normalization
self.weights = array([v / linalg.norm(v) for v in self.weights])
self.activation_map = zeros((x, y))
self.neigx = arange(x)
self.neigy = arange(y) # used to evaluate the neighborhood function
self.neighborhood = self.gaussian
def _iter_sample(draws, step, start=None, trace=None, chain=0, tune=None,
model=None, random_seed=None):
model = modelcontext(model)
draws = int(draws)
seed(random_seed)
if draws < 1:
raise ValueError('Argument `draws` should be above 0.')
if start is None:
start = {}
strace = _choose_backend(trace, chain, model=model)
if len(strace) > 0:
_soft_update(start, strace.point(-1))
else:
_soft_update(start, model.test_point)
try:
step = CompoundStep(step)
except TypeError:
pass
point = Point(start, model=model)
strace.setup(draws, chain)
for i in range(draws):
if i == tune:
step = stop_tuning(step)
point = step.step(point)
strace.record(point)
yield strace
else:
strace.close()
def init_theta(embsize, _seed=None):
if _seed != None:
ori_state = get_state()
seed(_seed)
parameters = []
# Wi1
parameters.append(init_W(embsize, embsize))
# Wi2
parameters.append(init_W(embsize, embsize))
# bi
parameters.append(zeros(embsize))
# Wo1
parameters.append(init_W(embsize, embsize))
# Wo2
parameters.append(init_W(embsize, embsize))
# bo1
parameters.append(zeros(embsize))
# bo2
parameters.append(zeros(embsize))
if _seed != None:
set_state(ori_state)
return concatenate(parameters)
def __init__(self, eta=0.01, n_iter=10, shuffle=True, random_state=None):
self.eta = eta
self.n_iter = n_iter
self.w_init = False # are weights initialized yet?
self.shuffle = shuffle
if random_state:
seed(random_state)
def resample(self):
# Start with the minority class
underx = self.x[self.y == self.minc]
undery = self.y[self.y == self.minc]
# Loop over the other classes under picking at random
for key in self.ucd.keys():
# If the minority class is up, skip it
if key == self.minc:
continue
# Set the ratio to be no more than the number of samples available
if self.ratio * self.ucd[self.minc] > self.ucd[key]:
num_samples = self.ucd[key]
else:
num_samples = int(self.ratio * self.ucd[self.minc])
# Pick some elements at random
seed(self.rs)
indx = randint(low = 0, high = self.ucd[key], size = num_samples)
# Concatenate to the minority class
underx = concatenate((underx, self.x[self.y == key][indx]), axis = 0)
undery = concatenate((undery, self.y[self.y == key][indx]), axis = 0)
return underx, undery
def reset_weights(self):
"""Reset all projection weights to an initial (untrained) state, but keep the existing vocabulary."""
random.seed(self.seed)
self.syn0 = matutils.zeros_aligned((len(self.vocab), self.layer1_size), dtype=REAL)
self.syn1 = matutils.zeros_aligned((len(self.vocab), self.layer1_size), dtype=REAL)
self.syn0 += (random.rand(len(self.vocab), self.layer1_size) - 0.5) / self.layer1_size
self.syn0norm = None
def test_subsample_otu_random(self):
'''Test that samples are chosen correctly, reproducibly.'''
seed(0)
otu = array([ 0.29288102, 1.2911362 , 0.61658026, 0.2692991 , -0.4580712 ,
0.87536468, -0.37447673, 2.350638 , 2.78197656, -0.69935089])
exp_inds = array([1, 2, 4, 8, 9])
exp_otu = array([ 1.2911362 , 0.61658026, -0.4580712 , 2.78197656, -0.69935089])
def test_superimpose_signals(self):
'''Test that signals are correctly superimposed.'''
# test with one numpy and one scipy func, seed for reproducibility
seed(0)
gen1 = [[8, 2, 0, sin, 25, 0, 2*pi],
[8, 2, .5*pi, sawtooth, 25, 0, 2*pi]]
# noise function and params as well as the general y_shift
nfap = [uniform, -3, 6]
gys = 20
obs = superimpose_signals(gen1, gys, nfap)
exp = array([ 20.29288102, 26.62446953, 30.21145015, 32.2692991 ,
31.80346536, 31.54203135, 11.62552327, 11.68397134,
10.52044 , 7.30064911, 12.15548033, 14.84003619,
20.40826737, 27.88691316, 27.02108625, 29.5227758 ,
29.38284695, 32.66238574, 13.66894051, 11.55340622,
10.61017349, 9.79495139, 10.17400628, 16.34984172, 17.70964656])
assert_array_almost_equal(exp, obs)
# test with a single function
# [gen1[0]] required for superimpose to work since its expecting a list
# of lists and the unwrap call will not function correctly unles it is.
seed(0)
obs = superimpose_signals([gen1[0]], gys, nfap)
exp = array([ 20.29288102, 25.2911362 , 27.54478349, 28.2692991 ,
26.47013203, 24.87536468, 19.62552327, 18.350638 ,
15.85377333, 11.30064911, 14.822147 , 16.17336952,
20.40826737, 26.55357983, 24.35441958, 25.5227758 ,
24.04951361, 25.99571907, 21.66894051, 18.22007289,
15.94350682, 13.79495139, 12.84067294, 17.68317506, 17.70964656])
assert_array_almost_equal(exp, obs)
def testCArbitro(self):
rd.seed(3)
arbitro = CArbitro(jugadores=3, max_turnos=1000., player_class=[CRandomPlayer, CRandomPlayer, CRandomPlayer],
atack_models=[None, None, None])
arbitro.play(0)
def __init__(self, eta=0.01, n_iter = 50, shuffle=True, random_state=None): self.eta = eta self.n_iter = n_iter self.w_initialized = False self.shuffle = shuffle if random_state: seed(random_sate)
def init_theta_la( theta, src_embsize, trg_embsize, src_word_vectors, trg_word_vectors, _seed=None ):
if _seed != None:
ori_state = get_state()
seed(_seed)
src_offset = 4 * src_embsize * src_embsize + 3 * src_embsize + src_embsize * src_word_vectors._vectors.shape[1]
src_theta = theta[0:src_offset]
trg_theta = theta[src_offset:]
parameters = []
# Source side
parameters.append( src_theta )
# Wla n*n
parameters.append( init_W( src_embsize, src_embsize ) )
# bla n*1
parameters.append( zeros( src_embsize ) )
# Target side
parameters.append( trg_theta )
# Wla n*n
parameters.append( init_W( trg_embsize, trg_embsize ) )
# bla n*1
parameters.append( zeros( trg_embsize ) )
if _seed != None:
set_state(ori_state)
return concatenate(parameters)
def edge_attachment_test(seed=None):
import math
if seed==None:
seed = npr.randint(1E6)
print('rnd seed: %d'%seed)
npr.seed(seed)
random.seed(seed)
nn = 30
G = nx.watts_strogatz_graph(n=nn, k=4, p=0.0)
print('All new edges should lie close to the cycle')
pos = {node:(math.cos(float(node)/nn * math.pi * 2),math.sin(float(node)/nn * math.pi * 2)) for node in G}
def visualize_rewiring(G, added_edges_set, deled_edges_set, tpl_data):
old_G = G.copy()
old_G.remove_edges_from(added_edges_set)
old_G.add_edges_from(deled_edges_set)
print('added edges: ')
print(added_edges_set)
print('deled edges: ')
print(deled_edges_set)
benchmarks.editing_demo_draw(G=old_G, new_G=G, seed=1, pos=pos)
print(tpl_data)
pylab.show()
params = {}
params['edit_edges_tester'] = visualize_rewiring
params['edge_edit_rate'] = [0.10]
params['node_edit_rate'] = [0.]
params['node_growth_rate'] = [0.]
params['verbose'] = True
algorithms.generate_graph(G, params=params)
def expose(self, widget, event):
cr = widget.window.cairo_create()
environ["GKS_WSTYPE"] = "142"
pc = PyCairoContext.from_address(id(cr))
environ['GKSconid'] = "%lu" % pc.ctx
cr.move_to(15, 15)
cr.set_font_size(14)
cr.show_text("Contour Plot using Gtk ...")
seed(0)
xd = uniform(-2, 2, 100)
yd = uniform(-2, 2, 100)
zd = xd * np.exp(-xd**2 - yd**2)
gr.setviewport(0.15, 0.95, 0.1, 0.9)
gr.setwindow(-2, 2, -2, 2)
gr.setspace(-0.5, 0.5, 0, 90)
gr.setmarkersize(1)
gr.setmarkertype(gr.MARKERTYPE_SOLID_CIRCLE)
gr.setcharheight(0.024)
gr.settextalign(2, 0)
gr.settextfontprec(3, 0)
x, y, z = gr.gridit(xd, yd, zd, 200, 200)
h = np.linspace(-0.5, 0.5, 20)
gr.surface(x, y, z, 5)
gr.contour(x, y, h, z, 0)
gr.polymarker(xd, yd)
gr.axes(0.25, 0.25, -2, -2, 2, 2, 0.01)
gr.updatews()
def init_theta( embsize, word_vectors, _seed = None ):
if _seed != None:
ori_state = get_state()
seed(_seed)
parameters = []
# Wi1 n*n
parameters.append(init_W(embsize, embsize))
# Wi2 n*n
parameters.append(init_W(embsize, embsize))
# bi n*1
parameters.append(zeros(embsize))
# Wo1 n*n
parameters.append(init_W(embsize, embsize))
# Wo2 n*n
parameters.append(init_W(embsize, embsize))
# bo1 n*1
parameters.append(zeros(embsize))
# bo2 n*1
parameters.append(zeros(embsize))
# L
parameters.append( word_vectors._vectors.reshape( embsize * len( word_vectors ) ) )
if _seed != None:
set_state(ori_state)
return concatenate(parameters)
def run(oiter):
# ----- Variable for this run -----
log_alpha_0 = all_log_alpha_0[oiter]
print "Running job {0} on {1}".format(oiter + 1, socket.gethostname())
train_images, train_labels, _, _, _ = load_data()
train_images = train_images[:N_data, :]
train_labels = train_labels[:N_data, :]
batch_idxs = BatchList(N_data, batch_size)
iter_per_epoch = len(batch_idxs)
N_weights, _, loss_fun, frac_err = make_nn_funs(layer_sizes, L2_reg)
def indexed_loss_fun(w, idxs):
return loss_fun(w, X=train_images[idxs], T=train_labels[idxs])
V0 = npr.randn(N_weights) * velocity_scale
losses = []
d_losses = []
alpha_0 = np.exp(log_alpha_0)
for N_iters in all_N_iters:
alphas = np.full(N_iters, alpha_0)
betas = np.full(N_iters, beta_0)
npr.seed(1)
W0 = npr.randn(N_weights) * np.exp(log_param_scale)
results = sgd(indexed_loss_fun, batch_idxs, N_iters, W0, V0, alphas, betas)
losses.append(results['loss_final'])
d_losses.append(d_log_loss(alpha_0, results['d_alphas']))
return losses, d_losses
def test_masked_rankdata_2d(self,
seed_value,
method,
use_mask,
set_missing,
ascending):
eyemask = ~eye(5, dtype=bool)
nomask = ones((5, 5), dtype=bool)
seed(seed_value)
asfloat = (randn(5, 5) * seed_value)
asdatetime = (asfloat).copy().view('datetime64[ns]')
mask = eyemask if use_mask else nomask
if set_missing:
asfloat[:, 2] = nan
asdatetime[:, 2] = NaTns
float_result = masked_rankdata_2d(
data=asfloat,
mask=mask,
missing_value=nan,
method=method,
ascending=True,
)
datetime_result = masked_rankdata_2d(
data=asdatetime,
mask=mask,
missing_value=NaTns,
method=method,
ascending=True,
)
check_arrays(float_result, datetime_result)
def test_getitem_by_boolean(self):
""" __getitem__: by boolean index """
random.seed(65)
idx = random.random_integers(0, self.a.size - 1, self.a.size) > (self.a.size // 2)
assert idx.dtype == bool
self._test_getitem_by(idx)
def simula(N, n, PM, beta, pmig, grupos, listafitness, listafitness_m, mpvencer, x):
s = int(time.time() + random.randint(0, 2**32-1) + x) % (2**32-1)
random.seed(s)
s = int(time.time() + random.randint(0, 2**32-1) + x) % (2**32-1)
np.random.seed(s)
IT = 50002
#IT = 5002
precisao = 0.01
AL = []
AL.append(np.count_nonzero(grupos)/(N*n))
crit = 0. if AL[0] > (1.-precisao) else 1.
# Para cada periodo, os grupos entram em conflito e se reproduzem, e
# os individuos sofrem mutacao e migram entre os grupos
for it in xrange(1,IT):
if abs(AL[it-1]-crit)<precisao:
print "Acabou na geracao ", it -1
break
#
knums = [np.count_nonzero(line) for line in grupos]
glabels = conflito(N,knums,beta,listafitness_m, mpvencer) if N>1 \
else knums
grupos = reproducao_ind(N,n,listafitness,listafitness_m,glabels)
grupos = mutacao(N,n,PM,grupos)
grupos = migracao(N,n,grupos,pmig)
freqA = float(np.count_nonzero(grupos))/(N*n)
AL.append(freqA)
logger.debug("%d \t----------->\t %f" %(it,freqA))
return it-1
def general_mix(self, mix, **kwargs):
"""
simple mix data test
"""
npr.seed(122351)
self.mix = mix(K = self.nClass,**kwargs)
self.mix.set_data(self.Y)
self.mu_sample = list()
self.sigma_sample = list()
self.p_sample = list()
for k in range(self.nClass):
self.mu_sample.append(np.zeros_like(self.Thetas[k]))
self.sigma_sample.append(np.zeros_like(self.Sigmas[k]))
self.p_sample.append(np.zeros_like(self.P[k]))
for i in range(self.sim): # @UnusedVariable
self.mix.sample()
for k in range(self.nClass):
self.mu_sample[k] += self.mix.mu[k]
self.sigma_sample[k] += self.mix.sigma[k]
self.p_sample[k] += self.mix.p[k]
np.set_printoptions(precision=2)
self.compare_class("MCMC:")
def test_forward_pass():
npr.seed(1)
N = 15
D = 10
data = 0.5*npr.rand(N,D)
norm = Normalization(3)
norm_inds = [1,3,5]
bw = BetaWarp(2)
bw_inds = [0,2]
lin = Linear(3)
lin_inds = [6,8,9]
t = Transformer(D)
t.add_layer((norm, norm_inds), (bw, bw_inds), (lin, lin_inds))
new_data = t.forward_pass(data)
assert new_data.shape[1] == 9
assert np.all(new_data[:,7:] == data[:,[4,7]])
assert np.linalg.norm(new_data[:,0:3].sum(1) - 1) < 1e-10
bw = BetaWarp(9)
t.add_layer(bw)
def main():
rnd.seed(1206)
ap = ArgumentParser()
# TODO use more files ?
ap.add_argument('-b', '--bootstrap-iters', type=int, default=1000)
ap.add_argument('cf_output', type=str, help='crowdflower results file')
args = ap.parse_args()
votes = defaultdict(int)
res = []
with open(args.cf_output, 'rb') as fh:
csvread = csv.reader(fh, delimiter=b',', quotechar=b'"', encoding="UTF-8")
headers = csvread.next()
for row in csvread:
row = Result(row, headers)
if row._golden == 'true': # skip test questions
continue
if row.more_natural == 'A less than B':
votes[row.origin_b] += 1
res.append(row.origin_b)
elif row.more_natural == 'A more than B':
votes[row.origin_a] += 1
res.append(row.origin_a)
for key, val in votes.iteritems():
print '%s\t%d (%2.2f)' % (key, val, float(val) / len(res) * 100)
pairwise_bootstrap(res, args.bootstrap_iters)
def generate_data(self,n=1e4, k=2, ncomps=3, seed=1):
npr.seed(seed)
data1_concat = []
data2_concat = []
labels1_concat = []
labels2_concat = []
for j in xrange(ncomps):
mean = gen_mean[j]
sd = gen_sd[j]
corr = gen_corr[j]
cov = np.empty((k, k))
cov.fill(corr)
cov[np.diag_indices(k)] = 1
cov *= np.outer(sd, sd)
num1 = int(n * group_weights1[j])
num2 = int(n * group_weights2[j])
rvs1 = multivariate_normal(mean, cov, size=num1)
rvs2 = multivariate_normal(mean, cov, size=num2)
data1_concat.append(rvs1)
data2_concat.append(rvs2)
labels1_concat.append(np.repeat(j, num1))
labels2_concat.append(np.repeat(j, num2))
return ([np.concatenate(labels1_concat), np.concatenate(labels2_concat)],
[np.concatenate(data1_concat, axis=0),
np.concatenate(data2_concat, axis=0)])
def plot(args):
from pickle import load
from sys import stdin
import matplotlib.pyplot as plt
from itertools import starmap
from numpy.random import seed, random
from coherent_point_drift.geometry import rigidXform, RMSD
seed(4) # For color choice
reference = load(stdin.buffer)
rmsds = []
fig, ax = plt.subplots(1, 1)
for degradation, fit in loadAll(stdin.buffer):
color = random(3)
degraded = degrade(reference, *degradation)
ax.scatter(degraded[:, 0], degraded[:, 1], marker='o', color=color, alpha=0.2)
fitted = rigidXform(degraded, *fit)
ax.scatter(fitted[:, 0], fitted[:, 1], marker='+', color=color)
rmsds.append(RMSD(reference, fitted))
ax.scatter(reference[:, 0], reference[:, 1], marker='D', color='black')
ax.set_xticks([])
ax.set_yticks([])
if len(rmsds) > 1:
fig, ax = plt.subplots(1, 1)
ax.violinplot(rmsds)
ax.set_ylabel("RMSD")
plt.show()
def generate(args):
from functools import partial
from itertools import starmap
from numpy.random import seed, random, randint
from numpy import iinfo
from pickle import dumps
from sys import stdout
from coherent_point_drift.align import globalAlignment
seed(args.seed)
reference= random((args.N, args.D))
stdout.buffer.write(dumps(reference))
seeds = randint(iinfo('int32').max, size=args.repeats)
degradations = list(map(partial(generateDegradation, args), seeds))
transformeds = starmap(partial(degrade, reference), degradations)
if args.method == 'rigid':
from coherent_point_drift.align import driftRigid as drift
elif args.method == 'affine':
from coherent_point_drift.align import driftAffine as drift
else:
raise ValueError("Invalid method: {}".format(args.method))
fits = map(partial(globalAlignment, reference, w=args.w), transformeds)
for repeat in zip(degradations, fits):
stdout.buffer.write(dumps(repeat))
def test_backward_pass():
npr.seed(1)
eps = 1e-5
N = 15
D = 10
data = 0.5*npr.rand(N,D)
norm = Normalization(3)
norm_inds = [1,3,5]
bw = BetaWarp(2)
bw_inds = [0,2]
lin = Linear(3)
lin_inds = [6,8,9]
t = Transformer(D)
# Add a layer and test the gradient
t.add_layer((norm, norm_inds), (bw, bw_inds), (lin, lin_inds))
new_data = t.forward_pass(data)
loss = np.sum(new_data**2)
V = 2*new_data
dloss = t.backward_pass(V)
dloss_est = np.zeros(dloss.shape)
for i in xrange(N):
for j in xrange(D):
data[i,j] += eps
loss_1 = np.sum(t.forward_pass(data)**2)
data[i,j] -= 2*eps
loss_2 = np.sum(t.forward_pass(data)**2)
data[i,j] += eps
dloss_est[i,j] = ((loss_1 - loss_2) / (2*eps))
assert np.linalg.norm(dloss - dloss_est) < 1e-6
# Add a second layer and test the gradient
t.add_layer(Linear(9))
new_data = t.forward_pass(data)
loss = np.sum(new_data**2)
V = 2*new_data
dloss = t.backward_pass(V)
dloss_est = np.zeros(dloss.shape)
for i in xrange(N):
for j in xrange(D):
data[i,j] += eps
loss_1 = np.sum(t.forward_pass(data)**2)
data[i,j] -= 2*eps
loss_2 = np.sum(t.forward_pass(data)**2)
data[i,j] += eps
dloss_est[i,j] = ((loss_1 - loss_2) / (2*eps))
assert np.linalg.norm(dloss - dloss_est) < 1e-6
def train(self, training_inputs, training_labels, epochs):
random.seed(5)
for i in range(epochs):
#forward propogation:
# we are trying to non-linearity over a linear function. so hidden layer output is sigmoid function applied over z
#where z is z=weight*x +bias
hidden_layer1_output = self.sigmoid(dot(training_inputs, self.synaptic_weights0)+self.bias_in)
hidden_layer2_output = self.sigmoid(dot(hidden_layer1_output, self.synaptic_weights1)+self.bias_hidden)
predicted_output= self.sigmoid(dot(hidden_layer2_output, self.synaptic_weights2)+self.bias_out)
#hidden_layer1_output, hidden_layer2_output, predicted_output= self.test(training_inputs)
#calculate error or loss
error = training_labels - predicted_output
#Backward propogation to find gradients
delta_output=error*self.learning_rate*self.derivative_sigmoid(predicted_output)
hidden2_error=delta_output.dot(self.synaptic_weights2.T)
delta_hidden2=hidden2_error*self.learning_rate*self.derivative_sigmoid(hidden_layer2_output)
hidden1_error=delta_hidden2.dot(self.synaptic_weights1.T)
delta_hidden1=hidden1_error*self.learning_rate*self.derivative_sigmoid(hidden_layer1_output)
#update weights and bias at each layer according to gradients calculated by backward prop
self.updated_weight0=self.synaptic_weights0 + training_inputs.T.dot(delta_hidden1)*self.learning_rate
self.updated_weight1=self.synaptic_weights1 + hidden_layer1_output.T.dot(delta_hidden2)*self.learning_rate
self.updated_weight2=self.synaptic_weights2 + hidden_layer2_output.T.dot(delta_output)*self.learning_rate
self.updated_biasin=self.bias_in+sum(delta_hidden1, axis=0)*self.learning_rate
self.updated_biashidden=self.bias_hidden+sum(delta_hidden2, axis=0)*self.learning_rate
self.updated_biasout=self.bias_out+sum(delta_output, axis=0)*self.learning_rate
def test_crosscorr_image(self):
random.seed(42)
ref = random.randn(25, 25)
im = shift(ref, [2, 0], mode='constant', order=0)
imin = ImagesLoader(self.sc).fromArrays(im)
paramout = Register('crosscorr').estimate(imin, ref)[0][1]
imout = Register('crosscorr').transform(imin, ref).first()[1]
assert(allclose(ref[:-2, :], imout[:-2, :]))
assert(allclose(paramout, [2, 0]))
im = shift(ref, [0, 2], mode='constant', order=0)
imin = ImagesLoader(self.sc).fromArrays(im)
paramout = Register('crosscorr').estimate(imin, ref)[0][1]
imout = Register('crosscorr').transform(imin, ref).first()[1]
assert(allclose(ref[:, :-2], imout[:, :-2]))
assert(allclose(paramout, [0, 2]))
im = shift(ref, [2, -2], mode='constant', order=0)
imin = ImagesLoader(self.sc).fromArrays(im)
paramout = Register('crosscorr').estimate(imin, ref)[0][1]
imout = Register('crosscorr').transform(imin, ref).first()[1]
assert(allclose(ref[:-2, 2:], imout[:-2, 2:]))
assert(allclose(paramout, [2, -2]))
im = shift(ref, [-2, 2], mode='constant', order=0)
imin = ImagesLoader(self.sc).fromArrays(im)
paramout = Register('crosscorr').estimate(imin, ref)[0][1]
imout = Register('crosscorr').transform(imin, ref).first()[1]
assert(allclose(ref[2:, :-2], imout[2:, :-2]))
assert(allclose(paramout, [-2, 2]))
# -*- coding: utf-8 -*-
"""
=============
No Histograms
=============
Sometimes marginalised histograms are not needed.
"""
from numpy.random import multivariate_normal, normal, seed
import numpy as np
from chainconsumer import ChainConsumer
seed(0)
cov = normal(size=(3, 3))
data = multivariate_normal(normal(size=3), np.dot(cov, cov.T), size=100000)
c = ChainConsumer().add_chain(data)
c.configure(plot_hists=False)
fig = c.plotter.plot()
fig.set_size_inches(
3 + fig.get_size_inches()) # Resize fig for doco. You don't need this.
import torch
import torch.nn as nn
import torch.nn.functional as F
from torch.nn.utils.rnn import pack_padded_sequence, pad_packed_sequence
from data_util import config
from numpy import random
import tensorflow as tf
use_cuda = config.use_gpu and torch.cuda.is_available()
random.seed(123)
torch.manual_seed(123)
if torch.cuda.is_available():
torch.cuda.manual_seed_all(123)
def init_lstm_wt(lstm):
for names in lstm._all_weights:
for name in names:
if name.startswith('weight_'):
wt = getattr(lstm, name)
wt.data.uniform_(-config.rand_unif_init_mag, config.rand_unif_init_mag)
elif name.startswith('bias_'):
# set forget bias to 1
bias = getattr(lstm, name)
n = bias.size(0)
start, end = n // 4, n // 2
bias.data.fill_(0.)
bias.data[start:end].fill_(1.)
from datetime import datetime from numpy import random # Get current microseconds (assuming system can do this) dt = datetime.now() seed = dt.microsecond #Swap between these to get either a fixed random number # Or one that will hopefully differ on multiple processors seed = 347910 random.seed(seed) print(random.rand())
def test_lqr_backward_cost_nn_dynamics_module_constrained_slew():
npr.seed(0)
torch.manual_seed(0)
n_batch, n_state, n_ctrl, T = 1, 2, 2, 2
hidden_sizes = [10, 10]
n_sc = n_state + n_ctrl
C = 10.*npr.randn(T, n_batch, n_sc, n_sc).astype(np.float64)
C = np.matmul(C.transpose(0, 1, 3, 2), C)
c = 10.*npr.randn(T, n_batch, n_sc).astype(np.float64)
x_init = npr.randn(n_batch, n_state).astype(np.float64)
beta = 1.
u_lower = -beta*np.ones((T, n_batch, n_ctrl)).astype(np.float64)
u_upper = beta*np.ones((T, n_batch, n_ctrl)).astype(np.float64)
dynamics = NNDynamics(
n_state, n_ctrl, hidden_sizes, activation='sigmoid').double()
fc0b = dynamics.fcs[0].bias.view(-1).data.numpy().copy()
def forward_numpy(C, c, x_init, u_lower, u_upper, fc0b):
_C, _c, _x_init, _u_lower, _u_upper, fc0b = [
Variable(torch.Tensor(x).double(), requires_grad=True)
if x is not None else None
for x in [C, c, x_init, u_lower, u_upper, fc0b]
]
dynamics.fcs[0].bias.data[:] = fc0b.data
# dynamics.A.data[:] = fc0b.view(n_state, n_state).data
u_init = None
x_lqr, u_lqr, objs_lqr = mpc.MPC(
n_state, n_ctrl, T, _u_lower, _u_upper, u_init,
lqr_iter=40,
verbose=-1,
exit_unconverged=True,
backprop=False,
max_linesearch_iter=1,
slew_rate_penalty=1.0,
)(_x_init, QuadCost(_C, _c), dynamics)
return util.get_data_maybe(u_lqr.view(-1)).numpy()
def f_c(c_flat):
c_ = c_flat.reshape(T, n_batch, n_sc)
return forward_numpy(C, c_, x_init, u_lower, u_upper, fc0b)
def f_fc0b(fc0b):
return forward_numpy(C, c, x_init, u_lower, u_upper, fc0b)
u = forward_numpy(C, c, x_init, u_lower, u_upper, fc0b)
# Make sure the solution is strictly partially on the boundary.
assert np.any(u == u_lower.reshape(-1)) or np.any(u == u_upper.reshape(-1))
assert np.any((u != u_lower.reshape(-1)) & (u != u_upper.reshape(-1)))
du_dc_fd = nd.Jacobian(f_c)(c.reshape(-1))
du_dfc0b_fd = nd.Jacobian(f_fc0b)(fc0b.reshape(-1))
dynamics.fcs[0].bias.data = torch.DoubleTensor(fc0b).clone()
_C, _c, _x_init, _u_lower, _u_upper, fc0b = [
Variable(torch.Tensor(x).double(), requires_grad=True)
if x is not None else None
for x in [C, c, x_init, u_lower, u_upper, fc0b]
]
u_init = None
x_lqr, u_lqr, objs_lqr = mpc.MPC(
n_state, n_ctrl, T, _u_lower, _u_upper, u_init,
lqr_iter=20,
verbose=-1,
max_linesearch_iter=1,
grad_method=GradMethods.ANALYTIC,
slew_rate_penalty=1.0,
)(_x_init, QuadCost(_C, _c), dynamics)
u_lqr_flat = u_lqr.view(-1)
du_dC = []
du_dc = []
du_dfc0b = []
for i in range(len(u_lqr_flat)):
dCi = grad(u_lqr_flat[i], [_C], create_graph=True)[0].contiguous().view(-1)
dci = grad(u_lqr_flat[i], [_c], create_graph=True)[0].contiguous().view(-1)
dfc0b = grad(u_lqr_flat[i], [dynamics.fcs[0].bias],
create_graph=True)[0].view(-1)
du_dC.append(dCi)
du_dc.append(dci)
du_dfc0b.append(dfc0b)
du_dC = torch.stack(du_dC).data.numpy()
du_dc = torch.stack(du_dc).data.numpy()
du_dfc0b = torch.stack(du_dfc0b).data.numpy()
npt.assert_allclose(du_dc_fd, du_dc, atol=1e-3)
npt.assert_allclose(du_dfc0b_fd, du_dfc0b, atol=1e-3)
def test_lqr_backward_cost_linear_dynamics_constrained():
npr.seed(0)
torch.manual_seed(0)
n_batch, n_state, n_ctrl, T = 1, 2, 2, 3
hidden_sizes = [10, 10]
n_sc = n_state + n_ctrl
C = 10.*npr.randn(T, n_batch, n_sc, n_sc).astype(np.float64)
C = np.matmul(C.transpose(0, 1, 3, 2), C)
c = 10.*npr.randn(T, n_batch, n_sc).astype(np.float64)
x_init = npr.randn(n_batch, n_state).astype(np.float64)
beta = 0.5
u_lower = -beta*np.ones((T, n_batch, n_ctrl)).astype(np.float64)
u_upper = beta*np.ones((T, n_batch, n_ctrl)).astype(np.float64)
F = npr.randn(T-1, n_batch, n_state, n_sc)
def forward_numpy(C, c, x_init, u_lower, u_upper, F):
_C, _c, _x_init, _u_lower, _u_upper, F = [
Variable(torch.Tensor(x).double()) if x is not None else None
for x in [C, c, x_init, u_lower, u_upper, F]
]
u_init = None
x_lqr, u_lqr, objs_lqr = mpc.MPC(
n_state, n_ctrl, T, _u_lower, _u_upper, u_init,
lqr_iter=40,
verbose=1,
exit_unconverged=True,
backprop=False,
max_linesearch_iter=2,
)(_x_init, QuadCost(_C, _c), LinDx(F))
return util.get_data_maybe(u_lqr.view(-1)).numpy()
def f_c(c_flat):
c_ = c_flat.reshape(T, n_batch, n_sc)
return forward_numpy(C, c_, x_init, u_lower, u_upper, F)
def f_F(F_flat):
F_ = F_flat.reshape(T-1, n_batch, n_state, n_sc)
return forward_numpy(C, c, x_init, u_lower, u_upper, F_)
def f_x_init(x_init):
x_init = x_init.reshape(1, -1)
return forward_numpy(C, c, x_init, u_lower, u_upper, F)
u = forward_numpy(C, c, x_init, u_lower, u_upper, F)
# Make sure the solution is strictly partially on the boundary.
assert np.any(u == u_lower.reshape(-1)) or np.any(u == u_upper.reshape(-1))
assert np.any((u != u_lower.reshape(-1)) & (u != u_upper.reshape(-1)))
du_dc_fd = nd.Jacobian(f_c)(c.reshape(-1))
du_dF_fd = nd.Jacobian(f_F)(F.reshape(-1))
du_dxinit_fd = nd.Jacobian(f_x_init)(x_init[0])
_C, _c, _x_init, _u_lower, _u_upper, F = [
Variable(torch.Tensor(x).double(), requires_grad=True)
if x is not None else None
for x in [C, c, x_init, u_lower, u_upper, F]
]
u_init = None
x_lqr, u_lqr, objs_lqr = mpc.MPC(
n_state, n_ctrl, T, _u_lower, _u_upper, u_init,
lqr_iter=20,
verbose=1,
)(_x_init, QuadCost(_C, _c), LinDx(F))
u_lqr_flat = u_lqr.view(-1)
du_dC = []
du_dc = []
du_dF = []
du_dx_init = []
for i in range(len(u_lqr_flat)):
dCi = grad(u_lqr_flat[i], [_C], create_graph=True)[0].view(-1)
dci = grad(u_lqr_flat[i], [_c], create_graph=True)[0].view(-1)
dF = grad(u_lqr_flat[i], [F], create_graph=True)[0].view(-1)
dx_init = grad(u_lqr_flat[i], [_x_init], create_graph=True)[0].view(-1)
du_dC.append(dCi)
du_dc.append(dci)
du_dF.append(dF)
du_dx_init.append(dx_init)
du_dC = torch.stack(du_dC).data.numpy()
du_dc = torch.stack(du_dc).data.numpy()
du_dF = torch.stack(du_dF).data.numpy()
du_dx_init = torch.stack(du_dx_init).data.numpy()
npt.assert_allclose(du_dc_fd, du_dc, atol=1e-4)
npt.assert_allclose(du_dF, du_dF_fd, atol=1e-4)
npt.assert_allclose(du_dx_init, du_dxinit_fd, atol=1e-4)
logger = logging.getLogger(__name__)
args = get_command_args(debug=False,
debug_args=[
"--dataset=airline", "--algo=lstm",
"--n_lags=12", "--n_anoms=10", "--debug",
"--plot",
"--log_file=temp/timeseries/timeseries_rnn.log"
])
# print "log file: %s" % args.log_file
configure_logger(args)
dir_create("./temp/timeseries") # for logging and plots
random.seed(42)
rnd.seed(42)
rnn_type = args.algo # custom, basic, lstm
n_anoms = args.n_anoms
n_lags = args.n_lags
n_epochs = args.n_epochs
normalize_trend = args.normalize_trend
batch_size = 10
n_neurons = 100 # number of nodes in hidden state
dataset = args.dataset
# dataset = "airline"
# dataset = "fisher_temp"
# dataset = "shampoo"
df = get_univariate_timeseries_data(dataset)
# logger.debug(df)
@author: Sparkle Russell-Puleri @date: May, 9th 2020 ''' import psycopg2 import pandas as pd import pandas.io.sql as sqlio import numpy as np import sys from datetime import datetime as dt import json from sklearn.model_selection import train_test_split from numpy.random import seed seed(1) import os import numpy as np import tensorflow as tf import argparse from tensorflow.keras.models import Model from tensorflow.keras.layers import Input, LSTM, RepeatVector from tensorflow.keras.optimizers import Adam from tensorflow.keras.callbacks import EarlyStopping from tensorflow.keras.optimizers import Adam from keras.backend.tensorflow_backend import set_session from sklearn.metrics import roc_auc_score from sklearn.mixture import GaussianMixture from sklearn.metrics import roc_auc_score import pickle from sklearn import metrics
def main():
cumulative_avg_rewards = []
for seed_ in [10, 50, 100, 200, 500]:
seed(seed_)
set_random_seed(seed_)
print("Seed: ", seed_)
episode = 0
# initialize environment
env_id = get_args().env
env = make_atari(env_id)
env = wrap_deepmind(env,
frame_stack=True,
clip_rewards=False,
episode_life=False)
env.seed(seed_)
#env = Monitor(env)
state_size = env.observation_space.shape[0]
action_size = env.action_space.n
agent = get_agent(env)
# models_entropy_coeff1 Space_inv_A2C_LSTM_nstep8_MAX_avg_rew_641_max_rew_4144
save_path = os.path.join(
'models_entropy_coeff1',
"Space_inv_A2C_LSTM_nstep8_MAX_avg_rew_641_max_rew_4144")
agent.load(save_path)
print("Actions available(%d): %r" %
(env.action_space.n, env.env.get_action_meanings()))
# run for 100 episodes
for i in range(100):
# Set reward received in this episode = 0 at the start of the episode
episodic_reward = 0
reset = False
#env = gym.wrappers.Monitor(env, 'test/'+str(i), force=True)
obs = env.reset()
renders = []
count = 0
action_count = 0
done = False
done1 = np.array([int(done)])
lstm_state = np.zeros((1, 256), dtype=np.float32)
while not done:
obs = np.expand_dims(obs.__array__(), axis=0)
a, v, lstm_state = agent.step(obs, S_=lstm_state, M_=done1)
obs, reward, done, info = env.step(a)
done1 = np.array([int(done)])
#env.render()
#if(count==0):
#print("OBSERVATION",obs.as)
#print("REWARD", reward)
action_count += 1
if (done):
# print(action_count)
#print(info)
break
#if(action_count == 50):
# print("Action_count",action_count)
# done = True
# break
episodic_reward += reward
# call evaluation function - takes in reward received after playing an episode
# calculates the cumulative_avg_reward over 100 episodes & logs it in wandb
if (i == 0):
reset = True
cumulative_avg_reward = evaluate(episodic_reward, reset)
# your models will be evaluated on 100-episode average reward
# therefore, we stop logging after 100 episodes
if (i >= 99):
print(
"*************************************************************"
)
print("CUMULATIVE_AVG_REWARD", cumulative_avg_reward)
print(
"%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%"
)
cumulative_avg_rewards.append(cumulative_avg_reward)
tf.reset_default_graph()
break
env.close()
print("Final score: ", np.mean(cumulative_avg_rewards))
def model_fit_eval(
score_table,
eval_table,
model_table,
train_images_paths,
train_masks_paths,
val_images_paths,
val_masks_paths,
_resize=[256, 256],
norm=255.0,
batch_size=32,
filters=4,
lr=1e-3,
epochs=50,
loss=dice_coef_loss,
metrics=None,
verbose=1,
shuffle=True,
patience=3,
pretrained_weights=None,
train_ds=None,
val_ds=None,
callbacks=None,
steps_per_epoch=None,
validation_steps=None,
prefix='',
pred_images_to_print=0,
rows_to_print=None,
smooth=0,
print_model_scores_images=0,
random_seed=2,
):
seed(random_seed)
set_seed(random_seed)
model, _ = model_fit(table=model_table,
train_images_paths=train_images_paths,
train_masks_paths=train_masks_paths,
val_images_paths=val_images_paths,
val_masks_paths=val_masks_paths,
_resize=_resize,
norm=norm,
batch_size=batch_size,
filters=filters,
lr=lr,
epochs=epochs,
loss=loss,
metrics=metrics,
verbose=verbose,
shuffle=shuffle,
pretrained_weights=pretrained_weights,
train_ds=train_ds,
val_ds=val_ds,
callbacks=callbacks,
steps_per_epoch=steps_per_epoch,
validation_steps=validation_steps,
prefix=prefix,
patience=patience)
eval_table.add_row(
model_evaluate(model,
images_paths=val_images_paths,
masks_paths=val_masks_paths,
norm=norm,
_resize=_resize,
verbose=verbose))
print(eval_table)
pred = None
if rows_to_print is not None:
pred = model_predict(model, images_to_print=pred_images_to_print)
print_model_score_table(score_table=score_table,
pred=pred,
rows_to_print=rows_to_print,
smooth=smooth)
if print_model_scores_images > 0:
print_model_scores(pred=pred,
images_to_print=print_model_scores_images,
smooth=smooth)
return model, pred
default=32,
type=int,
help="Base number of convolution filters")
parser.add_argument('-c',
'--colours',
default='colours/colour_kmeans24_cat7.npy',
help="Discrete colour clusters to use")
args = parser.parse_args()
# LOAD THE COLOURS CATEGORIES
colours = np.load(args.colours)[0]
num_colours = np.shape(colours)[0]
# Load the data first for consistency
print("Loading data...")
npr.seed(0)
(x_train, y_train), (x_test, y_test) = load_cifar10()
test_rgb, test_grey = process(x_test, y_test)
test_rgb_cat = get_rgb_cat(test_rgb, colours)
# LOAD THE MODEL
if args.model == "CNN":
cnn = CNN(args.kernel, args.filters, num_colours)
elif args.model == "UNet":
cnn = UNet(args.kernel, args.filters, num_colours)
else: # model == "DUNet":
cnn = DilatedUNet(args.kernel, args.filters, num_colours)
print("Loading checkpoint...")
cnn.load_state_dict(
torch.load(args.checkpoint, map_location=lambda storage, loc: storage))
from src.models import decoder
from src.common import sample_layer
import sys
import argparse
import os
import math
from tensorflow import set_random_seed
from keras.models import Model, load_model
from keras.utils import plot_model
from keras.preprocessing.image import ImageDataGenerator
from keras.callbacks import TensorBoard, ModelCheckpoint, ReduceLROnPlateau
import time
from numpy.random import seed
seed(1990)
set_random_seed(1990)
def main(args):
optimizer = utils.select_optimizer(
optimizer=args.optimizer, base_learning_rate=args.base_learning_rate)
print("Creating data generators.......")
data_gen = ImageDataGenerator(rescale=1 / 255.,
validation_split=args.val_split)
train_generator = data_gen.flow_from_directory(
args.data_dir,
target_size=(args.image_size, args.image_size),
batch_size=args.train_batch_size,
def evaluate_mnist_single_tio2(args):
#############################
# load the data
#############################
input_nbr = args.input_nbr
input_nbr = args.input_nbr
probe_sample_rate = (
input_nbr / 10
) / 1000 #Probe sample rate. Proportional to input_nbr to scale down sampling rate of simulations
x = args.digit
np.random.seed(args.seed)
random.seed(args.seed)
data = np.load('mnist_norm.npz', allow_pickle=True)
image_train_filtered = data['image_train_filtered'] / 255
label_train_filtered = data['label_train_filtered']
image_test_filtered = data['image_test_filtered'] / 255
label_test_filtered = data['label_test_filtered']
# image_train_filtered = np.tile(image_train_filtered,(args.iterations,1,1))
# label_train_filtered = np.tile(label_train_filtered,(args.iterations))
image_train_filtered_single = []
label_train_filtered_single = []
for i in range(0, input_nbr):
if label_train_filtered[i] == x:
image_train_filtered_single.append(image_train_filtered[i])
label_train_filtered_single.append(label_train_filtered[i])
image_train_filtered_single = np.array(image_train_filtered_single)
label_train_filtered_single = np.array(label_train_filtered_single)
#Simulation Parameters
#Presentation time
presentation_time = args.presentation_time #0.20
#Pause time
# pause_time = args.pause_time + 0.0001
pause_time = args.pause_time
#Iterations
iterations = args.iterations
#Input layer parameters
n_in = args.n_in
# g_max = 1/784 #Maximum output contribution
amp_neuron = args.amp_neuron
n_neurons = args.n_neurons # Layer 1 neurons
# inhib_factor = args.inhib_factor #Multiplication factor for lateral inhibition
input_neurons_args = {
"n_neurons":
n_in,
"dimensions":
1,
"label":
"Input layer",
"encoders":
nengo.dists.Choice([[1]]),
# "max_rates":nengo.dists.Uniform(22,22),
# "intercepts":nengo.dists.Uniform(0,0),
"gain":
nengo.dists.Choice([args.gain_in]),
"bias":
nengo.dists.Choice([args.bias_in]),
# "noise":nengo.processes.WhiteNoise(dist=nengo.dists.Gaussian(args.noise_input, (args.noise_input/2)+0.00001), seed=1),
"neuron_type":
MyLIF_in(tau_rc=args.tau_in,
min_voltage=-1.8,
amplitude=args.amp_neuron,
tau_ref=args.tau_ref_in)
# "neuron_type":nengo.neurons.SpikingRectifiedLinear()#SpikingRelu neuron.
}
#Layer 1 parameters
layer_1_neurons_args = {
"n_neurons":
n_neurons,
"dimensions":
1,
"label":
"Layer 1",
"encoders":
nengo.dists.Choice([[1]]),
"gain":
nengo.dists.Choice([args.gain_out]),
"bias":
nengo.dists.Choice([args.bias_out]),
# "intercepts":nengo.dists.Choice([0]),
# "max_rates":nengo.dists.Choice([args.rate_out,args.rate_out]),
# "noise":nengo.processes.WhiteNoise(dist=nengo.dists.Gaussian(0, 0.5), seed=1),
# "neuron_type":nengo.neurons.LIF(tau_rc=args.tau_out, min_voltage=0)
# "neuron_type":MyLIF_out(tau_rc=args.tau_out, min_voltage=-1)
"neuron_type":
STDPLIF(tau_rc=args.tau_out,
min_voltage=-1,
spiking_threshold=args.thr_out,
inhibition_time=args.inhibition_time,
tau_ref=args.tau_ref_out,
inc_n=args.inc_n,
tau_n=args.tau_n)
}
#Learning rule parameters
learning_args = {
"lr": args.lr,
"winit_min": 0,
"winit_max": args.winit_max,
"vprog": args.vprog,
"vthp": 0.5,
"vthn": 0.5,
"gmax": 0.0008,
"gmin": 0.00008,
"vprog_increment": args.vprog_increment,
"voltage_clip_max": args.voltage_clip_max,
"voltage_clip_min": args.voltage_clip_min,
"Vapp_multiplier": args.Vapp_multiplier,
"sample_distance": int((presentation_time + pause_time) * 200 *
10), #Store weight after 10 images
}
# argument_string = "presentation_time: "+ str(presentation_time)+ "\n pause_time: "+ str(pause_time)+ "\n input_neurons_args: " + str(input_neurons_args)+ " \n layer_1_neuron_args: " + str(layer_1_neurons_args)+"\n Lateral Inhibition parameters: " + str(lateral_inhib_args) + "\n learning parameters: " + str(learning_args)+ "\n g_max: "+ str(g_max)
images = image_train_filtered_single
labels = label_train_filtered_single
np.random.seed(args.seed)
random.seed(args.seed)
model = nengo.Network("My network", seed=args.seed)
#############################
# Model construction
#############################
with model:
# picture = nengo.Node(PresentInputWithPause(images, presentation_time, pause_time,0))
picture = nengo.Node(
nengo.processes.PresentInput(images,
presentation_time=presentation_time))
true_label = nengo.Node(
nengo.processes.PresentInput(labels,
presentation_time=presentation_time))
# true_label = nengo.Node(PresentInputWithPause(labels, presentation_time, pause_time,-1))
# input layer
input_layer = nengo.Ensemble(**input_neurons_args)
input_conn = nengo.Connection(picture,
input_layer.neurons,
synapse=None)
#first layer
layer1 = nengo.Ensemble(**layer_1_neurons_args)
#Weights between input layer and layer 1
w = nengo.Node(CustomRule_post_v2_tio2(**learning_args),
size_in=n_in,
size_out=n_neurons)
nengo.Connection(input_layer.neurons, w, synapse=None)
nengo.Connection(w, layer1.neurons, synapse=args.synapse_layer_1)
weights = w.output.history
# with nengo_ocl.Simulator(model) as sim :
with nengo.Simulator(model, dt=args.dt, optimize=True) as sim:
w.output.set_signal_vmem(
sim.signals[sim.model.sig[input_layer.neurons]["voltage"]])
w.output.set_signal_out(
sim.signals[sim.model.sig[layer1.neurons]["out"]])
sim.run((presentation_time + pause_time) * labels.shape[0])
last_weight = weights[-1]
sim.close()
# pause_time = 0
# #Neuron class assingment
# images = image_train_filtered
# labels = label_train_filtered
# model = nengo.Network("My network", seed = args.seed)
# with model:
# # picture = nengo.Node(PresentInputWithPause(images, presentation_time, pause_time,0))
# picture = nengo.Node(nengo.processes.PresentInput(images, presentation_time=presentation_time))
# true_label = nengo.Node(nengo.processes.PresentInput(labels, presentation_time=presentation_time))
# # true_label = nengo.Node(PresentInputWithPause(labels, presentation_time, pause_time,-1))
# # input layer
# input_layer = nengo.Ensemble(**input_neurons_args)
# input_conn = nengo.Connection(picture,input_layer.neurons,synapse=None)
# #first layer
# layer1 = nengo.Ensemble(**layer_1_neurons_args)
# nengo.Connection(input_layer.neurons, layer1.neurons,transform=last_weight,synapse=args.synapse_layer_1)
# #Probes
# p_true_label = nengo.Probe(true_label)
# p_layer_1 = nengo.Probe(layer1.neurons)
# # with nengo_ocl.Simulator(model) as sim :
# with nengo.Simulator(model, dt=args.dt, optimize=True) as sim:
# sim.run((presentation_time+pause_time) * labels.shape[0])
# t_data = sim.trange()
# labels = sim.data[p_true_label][:,0]
# output_spikes = sim.data[p_layer_1]
# neuron_class = np.zeros((n_neurons, 1))
# n_classes = 10
# for j in range(n_neurons):
# spike_times_neuron_j = t_data[np.where(output_spikes[:,j] > 0)]
# max_spike_times = 0
# for i in range(n_classes):
# class_presentation_times_i = t_data[np.where(labels == i)]
# #Normalized number of spikes wrt class presentation time
# num_spikes = len(np.intersect1d(spike_times_neuron_j,class_presentation_times_i))/(len(class_presentation_times_i)+1)
# if(num_spikes>max_spike_times):
# neuron_class[j] = i
# max_spike_times = num_spikes
# spikes_layer1_probe_train = sim.data[p_layer_1]
# #Testing
# images = image_test_filtered
# labels = label_test_filtered
# input_nbr = 10000
# model = nengo.Network(label="My network",)
# with model:
# # picture = nengo.Node(PresentInputWithPause(images, presentation_time, pause_time,0))
# picture = nengo.Node(nengo.processes.PresentInput(images, presentation_time=presentation_time))
# true_label = nengo.Node(nengo.processes.PresentInput(labels, presentation_time=presentation_time))
# # true_label = nengo.Node(PresentInputWithPause(labels, presentation_time, pause_time,-1))
# input_layer = nengo.Ensemble(**input_neurons_args)
# input_conn = nengo.Connection(picture,input_layer.neurons,synapse=None)
# #first layer
# layer1 = nengo.Ensemble(**layer_1_neurons_args)
# nengo.Connection(input_layer.neurons, layer1.neurons,transform=last_weight,synapse=args.synapse_layer_1)
# p_true_label = nengo.Probe(true_label)
# p_layer_1 = nengo.Probe(layer1.neurons)
# step_time = (presentation_time + pause_time)
# with nengo.Simulator(model,dt=args.dt) as sim:
# sim.run(presentation_time * label_test_filtered.shape[0])
# accuracy_2 = evaluation_v2(10,n_neurons,int(((presentation_time * label_test_filtered.shape[0]) / sim.dt) / input_nbr),spikes_layer1_probe_train,label_train_filtered,sim.data[p_layer_1],label_test_filtered,sim.dt)
# labels = sim.data[p_true_label][:,0]
# t_data = sim.trange()
# output_spikes = sim.data[p_layer_1]
# n_classes = 10
# predicted_labels = []
# true_labels = []
# correct_classified = 0
# wrong_classified = 0
# class_spikes = np.ones((10,1))
# for num in range(input_nbr):
# #np.sum(sim.data[my_spike_probe] > 0, axis=0)
# output_spikes_num = output_spikes[num*int((presentation_time + pause_time) /args.dt):(num+1)*int((presentation_time + pause_time) /args.dt),:] # 0.350/0.005
# num_spikes = np.sum(output_spikes_num > 0, axis=0)
# for i in range(n_classes):
# sum_temp = 0
# count_temp = 0
# for j in range(n_neurons):
# if((neuron_class[j]) == i) :
# sum_temp += num_spikes[j]
# count_temp +=1
# if(count_temp==0):
# class_spikes[i] = 0
# else:
# class_spikes[i] = sum_temp
# # class_spikes[i] = sum_temp/count_temp
# # print(class_spikes)
# k = np.argmax(num_spikes)
# # predicted_labels.append(neuron_class[k])
# class_pred = np.argmax(class_spikes)
# predicted_labels.append(class_pred)
# true_class = labels[(num*int((presentation_time + pause_time) /args.dt))]
# # print(true_class)
# # print(class_pred)
# # if(neuron_class[k] == true_class):
# # correct_classified+=1
# # else:
# # wrong_classified+=1
# if(class_pred == true_class):
# correct_classified+=1
# else:
# wrong_classified+=1
# accuracy = correct_classified/ (correct_classified+wrong_classified)*100
# print("Accuracy: ", accuracy)
sim.close()
# del weights, sim.data, labels, class_pred, spikes_layer1_probe_train
return last_weight
from tensorflow import set_random_seed
import compute
import data
import lstm
import parameters
import plot
%matplotlib inline
%load_ext autoreload
%autoreload 2
# Initialization of seeds
set_random_seed(2)
seed(2)
# Read the parameters, dataset and then adjust everything
# to produce the training and test sets with the correct
# batch size splits.
params = parameters.read()
raw = data.read(params)
print('Original dataset num samples:', raw.shape)
adjusted = parameters.adjust(raw, params)
X_train, Y_train, X_test, Y_test = data.prepare(adjusted, params)
# Build the model and train it.
model = lstm.load('../../data/networks/20180115_0832.h5')
# model = lstm.build(params)
# train_loss = lstm.fit(model, X_train, Y_train, params)
# plot.history(train_loss)
from numpy import exp, array, random, dot
trainingSet_ins = array([[0, 0, 1], [0, 1, 0], [0, 1, 1], [1, 0, 1], [1, 1, 0],
[1, 1, 1]])
trainingSet_outs = array([[0, 0, 1, 1, 1, 1]]).T
random.seed(1)
synapse_weights = 2 * random.random((3, 1)) - 1
for iteration in xrange(10000):
output = 1 / (1 + exp(-(dot(trainingSet_ins, synapse_weights))))
synapse_weights += dot(trainingSet_ins.T,
(trainingSet_outs - output) * output * (1 - output))
print 1 / (1 + exp(-(dot(array([1, 0, 0]), synapse_weights))))
from __future__ import absolute_import, division, print_function, unicode_literals
import tensorflow as tf
## this is going to be worlds faster with a GPU available
assert tf.test.is_gpu_available()
import numpy as np
import pandas as pd
from PIL import Image
import glob
import sys
from random import shuffle
from numpy.random import seed
seed(87) #choosing a lucky seed is the most important part
## build keras CNN model
from keras.models import Sequential, Model, model_from_json
from keras.layers import Dense, Conv2D, MaxPooling2D, UpSampling2D, Conv2DTranspose
from keras.layers import Flatten, BatchNormalization, Reshape, Dropout, Input
from keras.regularizers import l2
from keras.preprocessing.image import ImageDataGenerator
import keras
from keras.optimizers import Adam
## build keras modelVV
input_image = Input(shape=(256, 256, 1))
model = Conv2D(32, kernel_size = (3,3), activation = 'relu', padding = "same",
input_shape = (256, 256, 1), kernel_initializer = "he_normal",
activity_regularizer = l2(0.001))(input_image)
def estimate(self,
spec_var=None,
spec_py=None,
submodel_string="workers",
agent_sample_rate=0.005,
alt_sample_size=None):
"""
"""
CLOSE = 0.001
sampler = "opus_core.samplers.weighted_sampler"
if alt_sample_size == None:
sampler = None
date_time_str = strftime("%Y_%m_%d__%H_%M", localtime())
agent_sample_rate_str = "__ASR_" + str(agent_sample_rate)
alt_sample_size_str = "_ALT_" + str(alt_sample_size)
info_file = date_time_str + agent_sample_rate_str + alt_sample_size_str + "__info.txt"
logger.enable_file_logging(date_time_str + agent_sample_rate_str +
alt_sample_size_str + "__run.txt")
logger.enable_memory_logging()
logger.log_status("Constrained Estimation with agent sample rate of %s and alternatvie sample size %s\n" % \
(agent_sample_rate, alt_sample_size))
t1 = time()
SimulationState().set_current_time(2000)
self.nbs = SessionConfiguration().get_dataset_from_pool("neighborhood")
self.hhs = SessionConfiguration().get_dataset_from_pool('household')
depts, lambda_value = compute_lambda(self.nbs)
supply, vacancy_rate = compute_supply_and_vacancy_rate(
self.nbs, depts, lambda_value)
self.nbs.set_values_of_one_attribute("supply", supply)
dataset_pool = SessionConfiguration().get_dataset_pool()
dataset_pool.add_datasets_if_not_included({
'vacancy_rate':
vacancy_rate,
'sample_rate':
agent_sample_rate
})
SessionConfiguration()["CLOSE"] = CLOSE
SessionConfiguration()['info_file'] = info_file
if self.save_estimation_results:
out_storage = StorageFactory().build_storage_for_dataset(
type='sql_storage', storage_location=self.out_con)
if spec_py is not None:
reload(spec_py)
spec_var = spec_py.specification
if spec_var is not None:
self.specification = load_specification_from_dictionary(spec_var)
else:
in_storage = StorageFactory().build_storage_for_dataset(
type='sql_storage', storage_location=self.in_con)
self.specification = EquationSpecification(in_storage=in_storage)
self.specification.load(
in_table_name="household_location_choice_model_specification")
#submodel_string = "workers"
seed(71) # was: seed(71,110)
self.model_name = "household_location_choice_model"
model = HouseholdLocationChoiceModelCreator().get_model(
location_set=self.nbs,
submodel_string=submodel_string,
sampler=sampler,
estimation_size_agents=agent_sample_rate * 100 / 20,
# proportion of the agent set that should be used for the estimation,
#
sample_size_locations=
alt_sample_size, # choice set size (includes current location)
compute_capacity_flag=True,
probabilities="opus_core.mnl_probabilities",
choices="urbansim.lottery_choices",
run_config=Resources({"capacity_string": "supply"}),
estimate_config=Resources({
"capacity_string": "supply",
"compute_capacity_flag": True
}))
#TODO: since households_for_estimation currently is the same as households, create_households_for_estimation
#becomes unnecesarry
#agent_set, agents_index_for_estimation = create_households_for_estimation(self.hhs, self.in_con)
agent_set = self.hhs
agents_index_for_estimation = arange(self.hhs.size())
self.result = model.estimate(
self.specification,
agent_set=agent_set,
agents_index=agents_index_for_estimation,
debuglevel=self.debuglevel,
procedure="urbansim.constrain_estimation_bhhh_two_loops"
) #"urbansim.constrain_estimation_bhhh"
#save estimation results
if self.save_estimation_results:
self.save_results(out_storage)
logger.log_status("Estimation done. " + str(time() - t1) + " s")
""" Generate example data. """ import matplotlib.pyplot as plt import numpy as np import numpy.random as rng # Seed the RNG rng.seed(0) # Publication time and current time t_start = 2.2 t_end = 100.7 duration = t_end - t_start # True parameter values lambda_tips = 0.5 mu_tips = 1.0 sig_log_tips = 1.9 # Arrival times of tips from poisson process expected_num_tips = lambda_tips * duration num_tips = rng.poisson(expected_num_tips) # Uniform distribution for times given number times = t_start + duration * rng.rand(num_tips) times = np.sort(times) # Amounts of tips amounts = mu_tips * np.exp(sig_log_tips * rng.randn(num_tips))
from keras.layers import (Bidirectional, Dense, Embedding, GRU, Input,
TimeDistributed, GaussianNoise, Dropout, Lambda,
Concatenate)
from keras.models import Model
from keras.optimizers import Adam
from keras.regularizers import l2
from keras.utils import plot_model
from keras.callbacks import ModelCheckpoint, EarlyStopping
from collections import Counter
from keras import backend as K
my_seed = 1
import random
random.seed(my_seed)
from numpy.random import seed
seed(my_seed)
from tensorflow import set_random_seed
set_random_seed(my_seed)
bioclean = lambda t: re.sub(
'[.,?;*!%^&_+():-\[\]{}]', '',
t.replace('"', '').replace('/', '').replace('\\', '').replace("'", '').
strip().lower()).split()
from keras import backend as K, initializers, regularizers, constraints
from keras.engine.topology import Layer
def dot_product(x, kernel):
"""
Wrapper for dot product operation, in order to be compatible with both
def plumMCMC(dirt, corename, T_mod, num_sup, det_lim, iterations, by, shape1_m,
mean_m, shape_acc, mean_acc, fi_mean, fi_acc, As_mean, As_acc,
resolution, seeds, thi, burnin, bqkg, Cs, Sdate, CSTdate):
seed(int(seeds))
plomo = "/" + corename + ".csv"
fimean = fi_mean
shapefi = fi_acc
ASmaean = As_mean
shapeAS = As_acc
shape2_m = (shape1_m * (1 - mean_m)) / mean_m
scale_acc = mean_acc / shape_acc
scale_fi = fimean / shapefi
scale_As = ASmaean / shapeAS
Data = genfromtxt(dirt + 'Results ' + corename + plomo, delimiter=',')
print(Data)
##################### Data definition 210Pb
if bqkg:
Bqkg_cons = 10.
else:
Bqkg_cons = 500. / 3. #1000.
density = Data[:, 1] * Bqkg_cons
activity = Data[:, 2]
sd_act = Data[:, 3]
thic = Data[:, 4]
depth = Data[:, 0]
supp = Data[:, 5]
sd_supp = Data[:, 6]
Ran = len(supp)
activity = activity * density
sd_act = sd_act * density
lam = 0.03114
dep_time_data = append(depth - thic, depth)
dep_time_data = list(set(dep_time_data))
X1, X0 = [], []
for i1 in range(len(depth)):
for k1 in range(len(dep_time_data)):
if depth[i1] == dep_time_data[k1]:
X1 = append(X1, int(k1))
if (depth - thic)[i1] == dep_time_data[k1]:
X0 = append(X0, int(k1))
m = 1
breaks = array(m * by)
while m * by < depth[-1]:
m += 1
breaks = append(breaks, m * by)
#################### Functions
def support(param):
tmp3 = True
for i in param:
if i <= 0.:
tmp3 = False
if param[1 + Ran] >= 1.:
tmp3 = False
if times([depth[-1]], param)[-1] > last_t(param[0]):
tmp3 = False
return tmp3
def last_t(fi):
return (1. / lam) * log(fi / (lam * det_lim))
def ln_like_data(param):
Asup = param[1:Ran + 1] * density
loglike = 0.
tmp2 = param[0] / lam
ts = times(dep_time_data, param)
for i in range(len(activity)):
A_i = Asup[i] + tmp2 * (exp(-lam * ts[int(X0[i])]) -
exp(-lam * ts[int(X1[i])]))
Tau = .5 * (sd_act[i]**(-2.))
loglike = loglike + Tau * ((A_i - activity[i])**2.)
return loglike
def ln_like_T(param):
Asup = param[1:Ran + 1] * density
loglike = 0.
tmp2 = param[0] / lam
ts = times(dep_time_data, param)
for i in range(len(activity)):
A_i = Asup[i] + tmp2 * (
exp(-lam * ts[int(X0[i])]) - exp(-lam * ts[int(X1[i])])
) #exp(tmp2 - lam*ts[int(X0[i])] ) - exp(tmp2 - lam*ts[int(X1[i])])
Tau = .5 * (sd_act[i]**(-2.))
loglike = loglike + 3.5 * log(4. + Tau * ((A_i - activity[i])**2.))
return loglike
def ln_like_supp(param):
logsupp = 0.
for i in range(len(supp)):
Tau = .5 * (sd_supp[i]**-2.)
logsupp = logsupp + Tau * ((param[1 + i] - supp[i])**2.)
return logsupp
def times(x, param):
w = param[Ran + 1]
a = param[Ran + 2:]
t1 = m - 1
ms1 = array([a[m - 1]])
while t1 > 0:
ms1 = append(ms1, w * ms1[-1] + (1 - w) * a[t1 - 1])
t1 -= 1
ms = ms1[::-1]
ages = array([])
y_last = append([0],
array([sum(ms[:i + 1] * by) for i in range(len(ms))]))
for i in range(len(x)):
k1 = 0
while breaks[k1] < x[i]:
k1 += 1
ages = append(ages,
y_last[k1] + (ms[k1] * (by - (breaks[k1] - x[i]))))
return ages
def pendi(param):
w = param[Ran + 1]
a = param[Ran + 2:]
t1 = m - 1
ms1 = array([a[m - 1]])
while t1 > 0:
ms1 = append(ms1, w * ms1[-1] + (1 - w) * a[t1 - 1])
t1 -= 1
ms = ms1[::-1]
return ms
def ln_prior_supp(param):
prior = 0.
prior = prior - ((shapefi - 1.) * log(param[0]) -
(param[0] / scale_fi)) # prior for fi
for k in range(Ran):
prior = prior - ((shapeAS - 1.) * log(param[1 + k]) -
(param[1 + k] / scale_As)) # prior for supp
prior = prior - (((1. / by) - 1.) * log(param[1 + Ran]) - log(by) +
((1. / by) * (shape1_m - 1.)) * log(param[1 + Ran]) +
(shape2_m - 1.) * log(1. - param[1 + Ran]**(1. / by))
) # prior for w #
for ms in range(m):
prior = prior - ((shape_acc - 1.) * log(param[ms + 2 + Ran]) -
(param[ms + 2 + Ran] / scale_acc))
return prior
if Cs == True:
def Cslike(param):
return 0.
else:
def Cslike(param):
tcs = times([Cs], param)
Tau = .5 * (.3**-2.)
return Tau * (((Sdate - tcs) - CSTdate)**2.)
if T_mod:
log_data = ln_like_T
else:
log_data = ln_like_data
def obj(param):
objval = ln_like_supp(param) + ln_prior_supp(param) + log_data(
param) + Cslike(param)
return objval
#################### Initial valules
print("Seaching initial values")
fi_ini_1 = unif.rvs(size=1, loc=50, scale=200) #200.
fi_ini_2 = unif.rvs(size=1, loc=250, scale=150) #100.
supp_ini_1 = unif.rvs(size=Ran, loc=As_mean, scale=1) #5.
supp_ini_2 = unif.rvs(size=Ran, loc=As_mean + 1, scale=2) #20.
w_ini = unif.rvs(size=1, loc=.2, scale=.3) #.3
w_ini0 = unif.rvs(size=1, loc=.3, scale=.3) #.7
m_ini_1 = unif.rvs(size=m, loc=0,
scale=mean_acc / 2) # repeat(array(3.1),m,axis=0)
m_ini_2 = unif.rvs(size=m, loc=0,
scale=2 * mean_acc) # repeat(array(.5),m,axis=0)
#print("here")
x = append(append(append(fi_ini_1, supp_ini_1), w_ini), m_ini_1)
xp = append(append(append(fi_ini_2, supp_ini_2), w_ini0), m_ini_2)
while not support(x):
m_ini_1 = unif.rvs(size=m, loc=0, scale=.3)
x = append(append(append(fi_ini_1, supp_ini_1), w_ini), m_ini_1)
while not support(xp):
m_ini_2 = unif.rvs(size=m, loc=0, scale=.3)
xp = append(append(append(fi_ini_2, supp_ini_2), w_ini0), m_ini_2)
################### MCMC
################## New MCMC test
thi = int((len(x))) * thi #thi = 25, 50, 100
burnin = len(xp) * burnin #burin 10000 20000
print("Total iterations,")
print(burnin + iterations * thi)
leadchrono = pytwalk(n=len(x), U=obj, Supp=support)
i, k, k0, n = 0, 0, 0, len(x)
U, Up = obj(x), obj(xp)
por = int(iterations / 10.)
Output = zeros((iterations + 1, n + 1))
Output[0, 0:n] = x.copy()
Output[0, n] = U
por2 = int(burnin / 5.)
while i < iterations:
onemove = leadchrono.onemove(x, U, xp, Up)
k += 1
if (all([k < burnin, k % por2 == 0])):
print("burn-in progress")
print int(100 * (k + .0) / burnin)
if (unif.rvs() < onemove[3]):
x, xp, ke, A, U, Up = onemove
k0 += 1
if all([k % thi == 0, k > int(burnin)]):
Output[i + 1, 0:n] = x.copy()
Output[i + 1, n] = U
if any([i % por == 0, i == 0]):
print int(100 * (i + .0) / iterations), "%"
#print((time.clock()-tiempomedir)/60)
i += 1
else:
if all([k % thi == 0, k > int(burnin)]):
Output[i + 1, 0:n] = x.copy()
Output[i + 1, n] = U
if any([i % por == 0, i == 0]):
print int(100 * (i + .0) / iterations), "%"
#print((time.clock()-tiempomedir)/60)
i += 1
#Output=array(Output)
print("Acceptance rate")
print(k0 / (i + .0))
##################
"""
out 0 -> Fi
out 1 -> Supported Activity
out 2 -> w
out 3-n -> dates
out -1 -> Energy
"""
savetxt(dirt + 'Results ' + corename + '/Results_output.csv',
Output,
delimiter=',')
estim = []
for i in range((iterations - 1)):
estim.append(times(breaks, Output[(i + 1), :-1]))
estim = array(estim)
savetxt(dirt + 'Results ' + corename + '/dates.csv', estim)
intervals = []
for i in range(len(estim[1, ])):
sort = sorted(estim[:, (i)])
mean = sum(sort) / len(sort)
disc = int(len(sort) * .025) + 1
disc1 = int(len(sort) * .975)
sort = sort[disc:disc1]
intervals.append([breaks[i], sort[0], mean, sort[-1]])
savetxt(dirt + 'Results ' + corename + '/intervals.csv',
intervals,
delimiter=',')
depths = array([append([0.0], breaks)])
savetxt(dirt + 'Results ' + corename + '/depths.csv',
depths,
delimiter=',')
grafdepts = linspace(0, breaks[-1], resolution)
grafdepts2 = grafdepts + (grafdepts[1] - grafdepts[0]) / 2
grafdepts2 = grafdepts2[0:(len(grafdepts2) - 1)]
grafage = linspace(0, (max(estim[:, -1]) + .10), resolution)
y = []
for i in range(len(depths[0, :]) - 1):
logvect = array(grafdepts2 > depths[0, i]) * array(
grafdepts2 <= depths[0, i + 1])
for k in range(len(logvect)):
if logvect[k]:
if i != 0:
y1 = estim[:, i - 1] + (
(estim[:, i] - estim[:, i - 1]) /
(depths[0, i + 1] - depths[0, i])) * (grafdepts[k] -
depths[0, i])
porc = []
for posi in range(len(grafage) - 1):
porc.append(
sum(
array(y1 >= grafage[posi]) *
array(y1 < grafage[posi + 1])))
y.append(porc / (max(porc) + 0.0))
else:
y1 = ((estim[:, i] / depths[0, i + 1]) * (grafdepts[k]))
porc = []
for posi in range(len(grafage) - 1):
porc.append(
sum(
array(y1 >= grafage[posi]) *
array(y1 < grafage[posi + 1])))
y.append(porc / (max(porc) + 0.0))
savetxt(dirt + 'Results ' + corename + '/Graphs.csv',
array(y),
delimiter=',')
slopes = []
for i in range(iterations - 1):
slopes.append(pendi(Output[(i + 1), :-1]))
savetxt(dirt + 'Results ' + corename + '/Slopes.csv',
array(slopes),
delimiter=',')
import matplotlib.pyplot as plt
from numpy import array, exp, linspace
from numpy.random import seed
seed(4)
from inference.mcmc import GibbsChain
def rosenbrock(t):
# This is a modified form of the rosenbrock function, which
# is commonly used to test optimisation algorithms
X, Y = t
X2 = X**2
b = 15 # correlation strength parameter
v = 3 # variance of the gaussian term
return -X2 - b * (Y - X2)**2 - 0.5 * (X2 + Y**2) / v
# The maximum of the rosenbrock function is [0,0] - here we intentionally
# start the chain far from the mode.
start_location = array([2., -4.])
# Here we make our initial guess for the proposal widths intentionally
# poor, to demonstrate that gibbs sampling allows each proposal width
# to be adjusted individually toward an optimal value.
# width_guesses = array([5.,0.05])
# create the chain object
chain = GibbsChain(posterior=rosenbrock,
start=start_location) # widths = width_guesses)
# -*- coding: utf-8 -*-
from nltk.corpus import brown
import sklearn
import tensorflow as tf
import numpy as np
import numpy.random as random
import itertools
random.seed(42)
## Install data by running the following code:
#import nltk
#nltk.download('brown')
#nltk.download('universal_tagset')
def prepare_data(left_context_len, right_context_len, training_size):
## Take a subset
brown_words = list(itertools.islice(brown.words(), training_size))
brown_tags = [pair[1] for pair in brown.tagged_words(tagset='universal')]
word_encoder = sklearn.preprocessing.LabelEncoder()
pos_encoder = sklearn.preprocessing.LabelEncoder()
x_data = word_encoder.fit_transform(brown_words)
y_data = pos_encoder.fit_transform(brown_tags)
input_dim = len(word_encoder.classes_)
output_dim = len(pos_encoder.classes_)
import sys
sys.path.append('..\\..\\')
from PredictAgeFreq import PredictAgeFreq
from GetAgeFreq import GetAgeFreq
sys.path.append( '..\\' )
from hdf5file import hdf5file,burn
from numpy.random import seed
seed(20180814)
col=0
SurveyYear=2005
MaxYear=1980
MinYear=1875
yearborn=[y for y in range(MinYear,1+MaxYear)]
csvfile='../../TreeNobXdate.csv'
yearbornfrequency=GetAgeFreq(csvfile,col=col,SurveyYear=SurveyYear,MaxYear=MaxYear,MinYear=MinYear)
nAnimal=sum(yearbornfrequency)
CB=PredictAgeFreq(hdf5file,nAnimal,burn=0,quantile=[.025,.5,.975],MinYear=1875,MaxYear=1980)
import matplotlib.pyplot as plt
plt.close()
plt.plot(yearborn,yearbornfrequency,'k*')
plt.fill_between(yearborn,CB[.025],CB[.975],color='r',alpha=0.25)
#plt.plot(yearborn,CB[.025],'r-',linewidth=3,alpha=0.25)
plt.plot(yearborn,CB[.5 ],'g-',linewidth=3,alpha=0.25)
#plt.plot(yearborn,CB[.975],'r-',linewidth=3,alpha=0.25)
plt.title('FA1 Model Predictions')
def simulate(graph, fileName, disciples=0, iterations=1):
random.seed()
graphSummaryDataFileName = fileName + '.csv'
f = open(graphSummaryDataFileName, 'w')
fields = ['iteration', 'gen', 'influenceMoveCount', '0:1 Distribution']
csvwr = csv.DictWriter(f, fieldnames=fields, delimiter=',')
csvwr.writeheader()
for i in range(0, iterations):
if debug_mode:
print("Iteration:" + str(i))
g = C.deepcopy(graph)
# Set all nodes to 0. While you're doing that, find the most extraverted person (Jesus)
jesus_ext = 0
jesus = g.nodes()[0]
for node in g.nodes():
if g.node[node]['extraversion'] > jesus_ext:
jesus_ext = g.node[node]['extraversion']
jesus = node
g.add_node(node, value=0)
# Create the revolutionary - Jesus
g.add_node(jesus, value=1)
g.add_node(jesus, conformity=0)
# Also convert disciples
if disciples > 0:
jesus_friends = g.neighbors(jesus)
if disciples < len(jesus_friends):
apostles = random.choice(jesus_friends, disciples, False)
for node in apostles:
g.add_node(node, value=1)
else:
for node in jesus_friends:
g.add_node(node, value=1)
data = {}
data['iteration'] = i
data['gen'] = 0
data['influenceMoveCount'] = 0
# =======================================================================
# data['meanSimilar'] = meanSimilarityCoefficient(g)
# muthClump = muthukrishnaClumpiness(g)
# data['meanClumpSize'] = N.mean(muthClump)
# data['numClumps'] = len(muthClump)
# valComm = valueCommunities(g)
# data['meanCommunitySize'] = N.mean(map(len, valComm))
# data['numCommunities'] = len(valComm)
# data['influenceMoveCount'] = 0
# =======================================================================
converted = zeroToOne(g)
data['0:1 Distribution'] = converted
csvwr.writerow(data)
# Save graph
if output_json_graphs:
save_to_jsonfile(
fileName + '_iter_' + str(i) + '_gen_' + str(0) + '.json', g)
# Select random node and apply social influence rules until nNodes generations of no change
nStayedSame = 0
count = 0
numNodes = len(g.nodes())
while (nStayedSame < 2 * numNodes
and converted > conversion_threshold):
if debug_mode:
print("Count:" + str(count))
count = count + 1
randNode = random.choice(g.nodes())
# calculate if value should change and change if necessary
if (shouldIChange(g, randNode)):
newValue = (g.node[randNode]['value'] + 1) % 2
g.add_node(randNode, value=newValue)
nStayedSame = 0
else:
nStayedSame = nStayedSame + 1
converted = zeroToOne(g)
# If you want to write every generation, indent this under the while loop.
# Here I'm just outputting at the beginning and end to save space
data = {}
data['iteration'] = i
data['gen'] = count
data['influenceMoveCount'] = count
# ===================================================================
# data['meanSimilar'] = meanSimilarityCoefficient(g)
# muthClump = muthukrishnaClumpiness(g)
# data['meanClumpSize'] = N.mean(muthClump)
# data['numClumps'] = len(muthClump)
# valComm = valueCommunities(g)
# data['meanCommunitySize'] = N.mean(map(len, valComm))
# data['numCommunities'] = len(valComm)
# data['influenceMoveCount'] = count
# ===================================================================
converted = zeroToOne(g)
data['0:1 Distribution'] = converted
csvwr.writerow(data)
if output_json_graphs:
save_to_jsonfile(
fileName + '_iter_' + str(i) + '_gen_' + str(count + 1) +
'.json', g)
f.close()
import numpy as np
from numpy import random as rand
from matplotlib import pyplot, cm
from histogram import Histogram
rand.seed(1)
npoints = 100000
xdata = rand.normal(100,50,npoints)
ydata = rand.normal(50,10,npoints)
d0 = (30, [0,100],'$x$')
d1 = (40,[-0.5,100.5],'$y$')
h2 = Histogram(d0,d1,'$z$','Random Data')
h2.fill(xdata,ydata)
fig,ax = pyplot.subplots()
hprof,fitslices,fitprof = ax.plothist_profile(h2, cmap=cm.Blues)
popt,pcov,ptest = fitprof
perr = np.sqrt(popt)
msg = '''\
$N = {opt[0]:.0f} \pm {err[0]:.0f}$
$\mu = {opt[1]:.1f} \pm {err[1]:.1f}$'''
ax.text(.05, .95,
msg.format(opt=popt,err=perr),
horizontalalignment = 'left',
verticalalignment = 'top',
def iter_sample(draws, step, start=None, trace=None, tune=None, model=None, random_seed=None):
"""
Generator that returns a trace on each iteration using the given
step method. Multiple step methods supported via compound step
method returns the amount of time taken.
Parameters
----------
draws : int
The number of samples to draw
step : function
A step function
start : dict
Starting point in parameter space (or partial point)
Defaults to trace.point(-1)) if there is a trace provided and
model.test_point if not (defaults to empty dict)
trace : NpTrace or list
Either a trace of past values or a list of variables to track
(defaults to None)
tune : int
Number of iterations to tune, if applicable (defaults to None)
model : Model (optional if in `with` context)
Example
-------
for trace in iter_sample(500, step):
...
"""
model = modelcontext(model)
draws = int(draws)
seed(random_seed)
if start is None:
start = {}
if isinstance(trace, NpTrace) and len(trace) > 0:
trace_point = trace.point(-1)
trace_point.update(start)
start = trace_point
else:
test_point = model.test_point.copy()
test_point.update(start)
start = test_point
if not isinstance(trace, NpTrace):
if trace is None:
trace = model.unobserved_RVs
trace = NpTrace(trace)
try:
step = step_methods.CompoundStep(step)
except TypeError:
pass
point = Point(start, model=model)
for i in range(draws):
if (i == tune):
step = stop_tuning(step)
point = step.step(point)
trace.record(point)
yield trace
from tools.load import LoadMatrix
from numpy import random
lm = LoadMatrix()
ground_truth = lm.load_labels('../data/label_train_twoclass.dat')
random.seed(17)
predicted = random.randn(len(ground_truth))
parameter_list = [[ground_truth, predicted]]
def evaluation_contingencytableevaluation_modular(ground_truth, predicted):
from shogun.Features import Labels
from shogun.Evaluation import ContingencyTableEvaluation
from shogun.Evaluation import AccuracyMeasure, ErrorRateMeasure, BALMeasure
from shogun.Evaluation import WRACCMeasure, F1Measure, CrossCorrelationMeasure
from shogun.Evaluation import RecallMeasure, PrecisionMeasure, SpecificityMeasure
ground_truth_labels = Labels(ground_truth)
predicted_labels = Labels(predicted)
base_evaluator = ContingencyTableEvaluation()
base_evaluator.evaluate(predicted_labels, ground_truth_labels)
evaluator = AccuracyMeasure()
accuracy = evaluator.evaluate(predicted_labels, ground_truth_labels)
evaluator = ErrorRateMeasure()
errorrate = evaluator.evaluate(predicted_labels, ground_truth_labels)
evaluator = BALMeasure()
from numpy.random import seed seed(1017) import tensorflow as tf from tensorflow.python.client import device_lib #tf.random.set_seed(1017) import os from glob import glob from collections import OrderedDict import mne from mne.io import RawArray from mne import read_evokeds, read_source_spaces, compute_covariance from mne import channels, find_events, concatenate_raws from mne import pick_types, viz, io, Epochs, create_info from mne import pick_channels, concatenate_epochs from mne.datasets import sample from mne.simulation import simulate_sparse_stc, simulate_raw from mne.time_frequency import tfr_morlet import numpy as np from numpy import genfromtxt import pandas as pd pd.options.display.precision = 4 pd.options.display.max_columns = None import matplotlib.pyplot as plt plt.rcParams["figure.figsize"] = (12, 12)
def make_joint_data():
random.seed(123)
return DataFrame(random.randint(1, 4, (100, 4)),
columns=['A', 'B', 'C', 'D'])
#%%
import numpy as np
import numpy.random as rnd
import matplotlib.pyplot as plt
#outcome : 2 or if more use for loop in len(flips[flips==i)
flips = rnd.randint(0, 3, 100)
head = 0
tail = 0
#print('Head: ' + str(len(flips[flips==0])))
#print("tail: " + str(len(flips[flips == 2])))
rnd.seed(55)
#flip coins multiple(n) times
n_times = 2
flips1 = rnd.randint(0, 2, size=(n_times, 100))
tails = np.sum(flips1, axis=0) #add the rows
pos_combinations = 3 # O tails , 2 tails , 1 tails
number_of_tails = np.zeros(pos_combinations, dtype='int')
#print(tails)
for i in range(3):
number_of_tails[i] = np.count_nonzero(tails == i)
print('number of 0 tails:', number_of_tails[0])
print('number of 1 tail:', number_of_tails[1])
print('number of 2 tails:', number_of_tails[2])
probality = number_of_tails / 100
# So cumulative_prob[0] = prob[0], cum_prob[1] = prob[0] + prob[1], etc.
def seed_rng(seed):
rd.seed(0xC0FFEE)
compiled.initGlobalRng(0xC0FFEE)
