elif args.local_mode or config.pop('local_mode', False):
resume=False
local_mode = True
max_failures = 0
if args.temp_dir is None:
args.temp_dir = config.pop('temp_dir', None)
if args.name is not None:
name = args.name
config.pop('name', None)
else:
name = config.pop('name', "{}_training".format(os.getlogin()))
exp = tune.Experiment(
name=name,
run=get_trainable(config.pop('train_class')),
trial_name_creator=tune.function(trial_str_creator),
loggers=[GIFLogger],
resources_per_trial= {"cpu": 1, "gpu": args.n_gpus},
checkpoint_freq=config.pop('save_freq', 5000),
upload_dir=config.pop('upload_dir', None),
local_dir=config.pop('local_dir', None),
config=config # evaluate last to allow all popping above
)
ray.init(redis_address=redis_address, local_mode=local_mode, temp_dir=args.temp_dir)
trials = tune.run(exp, queue_trials=True, resume=resume,
checkpoint_at_end=True, max_failures=max_failures)
exit(0)
"policy_graphs": {
"def_policy":
(VTracePolicyGraph, Box(0.0, 255.0,
shape=(84, 84, 3)), Discrete(9), {
"gamma": 0.99
})
},
"policy_mapping_fn": tune.function(lambda agent_id: "def_policy"),
},
"env_config": env_actor_configs,
"num_workers": args.num_workers,
"num_envs_per_worker": args.envs_per_worker,
"sample_batch_size": args.sample_bs_per_worker,
"train_batch_size": args.train_bs
}
experiment_spec = tune.Experiment(
"multi-carla/" + args.model_arch,
"IMPALA",
# timesteps_total is init with None (not 0) which causes issue
# stop={"timesteps_total": args.num_steps},
stop={"timesteps_since_restore": args.num_steps},
config=config,
checkpoint_freq=1000,
checkpoint_at_end=True,
resources_per_trial={
"cpu": 4,
"gpu": 1
})
tune.run_experiments(experiment_spec)
def main(**kwargs):
print('===> Tuning hyperparameters. For normal training use `train.py`')
print('===> TensorFlow v. {}'.format(tf.__version__))
if args.max_time:
print('Tuning process will terminate after {} seconds'.format(str(args.max_time)))
os.environ['TRIALRUNNER_WALLTIME_LIMIT'] = str(args.max_time)
n_gpus = 2
if args.gpu_id is not None:
print('Restricting visible GPUs.')
print('Using: GPU {}'.format(args.gpu_id))
os.environ["CUDA_DEVICE_ORDER"]="PCI_BUS_ID"
os.environ["CUDA_VISIBLE_DEVICES"]=str(args.gpu_id)
n_gpus = 1
ray.init(num_gpus=n_gpus)
features_id, labels_id = Data.load_data(directories.train, tune=True)
test_features_id, test_labels_id = Data.load_data(directories.test, tune=True)
"""
Adjust stopping criteria - this terminates individual trials
"""
stopping_criteria = { # For individual trials
"time_total_s": args.max_time_s,
"episode_reward_mean": 1.0 # Otherwise negative loss
"mean_accuracy": 1.0
}
# Hyperparameters to be optimized
# Important to define search space sensibly
config = {
"args": args,
"user_config": config_train,
"train_ids": [features_id, labels_id],
"test_ids": [test_features_id, test_labels_id],
}
hp_config = {
"""
Include hyperparameters to be tuned, and their permitted range
"""
}
config.update(hp_config)
hp_resamples_pbt = {
"""
Include perturbation/resample ranges for population-based training
"""
}
# Specify experiment configuration
# Default uses machine with 32 CPUs / 2 GPUs
"""
Params to modify:
num_samples (grid fineness)
checkpoint_freq
time_attr
reward_attr
"""
experiment_spec = tune.Experiment(
name='tune_opt',
run=TrainModel,
stop=stopping_criteria,
config=config,
resources_per_trial={'cpu': 8, 'gpu': 0.5},
num_samples=16,
local_dir='~/ray_results',
checkpoint_freq=8,
checkpoint_at_end=True,
trial_name_creator=tune.function(functools.partial(trial_str_creator,
name=args.name))
)
pbt = tune.schedulers.PopulationBasedTraining(
time_attr="training_iteration",
reward_attr="episode_reward_mean",
perturbation_interval=8, # Mutation interval in time_attr units
hyperparam_mutations=hp_resamples_pbt,
resample_probability=0.25 # Resampling resets to value sampled from lambda
)
ahb = tune.schedulers.AsyncHyperBandScheduler(
time_attr="training_iteration",
reward_attr="episode_reward_mean",
max_t=64,
grace_period=8,
reduction_factor=3,
brackets=3
)
scheduler = ahb
if args.pbt is True:
scheduler = pbt
trials = tune.run_experiments(
experiments=experiment_spec,
scheduler=scheduler,
resume=False # "prompt"
)
# Save results
t_ids = [t.trial_id for t in trials]
t_config = [t.config for t in trials]
t_result = [t.last_result for t in trials]
df = pd.DataFrame([t_ids, t_config, t_result]).transpose()
df.columns = ['name', 'config', 'result']
df.to_hdf('{}_results.h5'.format(args.name), key='df')
experiment_spec = tune.Experiment(
# Name Structure
# Algorithm_ObservationSpace_Seed_Gamma_Alpha_Beta_LearningRate
# _ExplorationAnnealingTimesteps_ExplorationFraction
# _PrioritizedReplay_Hidden_Noisy_Dueling_DoubleQ_NetworkUpdateFreq_Buffer
#
# ie. DQN_default_s20_g0.6_a10_b1_lr5e-4_et50k_e0.1_prF_h256_nF_dF_qqF_u800
name=NAME,
run=OPTIONS['alg'],
checkpoint_freq=3,
checkpoint_at_end=True,
config={
# === Resources ===
# Number of actors used for parallelism
"num_workers": 0,
# Number of GPUs to allocate to the driver. Note that not all algorithms
# can take advantage of driver GPUs. This can be fraction (e.g., 0.3 GPUs).
"num_gpus": 0,
# Number of CPUs to allocate per worker.
"num_cpus_per_worker": 6,
# Number of GPUs to allocate per worker. This can be fractional.
"num_gpus_per_worker": 0,
# Any custom resources to allocate per worker.
"custom_resources_per_worker": {},
# Number of CPUs to allocate for the driver. Note: this only takes effect
# when running in Tune.
"num_cpus_for_driver": 1,
# === Execution ===
# Number of environments to evaluate vectorwise per worker.
## "num_envs_per_worker": 1,
# Default sample batch size
"sample_batch_size": 4,
# Training batch size, if applicable. Should be >= sample_batch_size.
# Samples batches will be concatenated together to this size for training.
"train_batch_size": 32,
# === Model ===
# Number of atoms for representing the distribution of return. When
# this is greater than 1, distributional Q-learning is used.
# the discrete supports are bounded by v_min and v_max
"num_atoms": 1,
"v_min": -10.0,
"v_max": 10.0,
# Whether to use noisy network
"noisy": OPTIONS['noisy'],
# Whether to use dueling dqn
"dueling": OPTIONS['dueling'],
# Whether to use double dqn
"double_q": OPTIONS['dueling'],
# Hidden layer sizes of the state and action value networks
"hiddens": OPTIONS['hidden'],
# N-step Q learning
"n_step": 1,
# === Exploration ===
# Max num timesteps for annealing schedules. Exploration is annealed from
# 1.0 to exploration_fraction over this number of timesteps scaled by
# exploration_fraction
"schedule_max_timesteps": OPTIONS['epsilon_ts'],
# Number of env steps to optimize for before returning
#morning: 10800/10 = 1080 steps total
"timesteps_per_iteration": 1080,
# Fraction of entire training period over which the exploration rate is
# annealed
"exploration_fraction": 1,
# Final value of random action probability
"exploration_final_eps": OPTIONS['epsilon'],
# Update the target network every `target_network_update_freq` steps.
"target_network_update_freq": OPTIONS['update_freq'],
# === Replay buffer ===
# Size of the replay buffer. Note that if async_updates is set, then
# each worker will have a replay buffer of this size.
"buffer_size": OPTIONS['buffer'],
# If True prioritized replay buffer will be used.
"prioritized_replay": OPTIONS['pr'],
# Alpha parameter for prioritized replay buffer.
"prioritized_replay_alpha": 0.6,
# Beta parameter for sampling from prioritized replay buffer.
"prioritized_replay_beta": 0.4,
# Fraction of entire training period over which the beta parameter is
# annealed
"beta_annealing_fraction": 0.2,
# Final value of beta
"final_prioritized_replay_beta": 0.4,
# Epsilon to add to the TD errors when updating priorities.
"prioritized_replay_eps": 1e-6,
# Whether to LZ4 compress observations
"compress_observations": True,
# === Optimization ===
# Learning rate for adam optimizer
"lr": OPTIONS['lr'],
# Adam epsilon hyper parameter
"adam_epsilon": 1e-8,
# If not None, clip gradients during optimization at this value
"grad_norm_clipping": 40,
# How many steps of the model to sample before learning starts.
"learning_starts": 2160,
# Update the replay buffer with this many samples at once. Note that
# this setting applies per-worker if num_workers > 1.
"sample_batch_size": 4,
# Size of a batched sampled from replay buffer for training. Note that
# if async_updates is set, then each worker returns gradients for a
# batch of this size.
"train_batch_size": 32,
# === Parallelism ===
# Optimizer class to use.
"optimizer_class": "SyncReplayOptimizer",
# Whether to use a distribution of epsilons across workers for exploration.
"per_worker_exploration": False,
# Whether to compute priorities on workers.
"worker_side_prioritization": False,
# Prevent iterations from going lower than this time span
"min_iter_time_s": 1,
# === Environment ===
# Discount factor of the MDP
"gamma": OPTIONS['gamma'],
"env": ChulaSSSEnv,
"env_config": {
"observation_space": OPTIONS['obs_space'],
"time_select": "morning",
"great_edition": True,
"with_gui": False,
"with_libsumo": True,
"no_internal_links": True,
"time_to_teleport": -1,
"viewport": "surasak",
"step_length": 1,
"seed": OPTIONS['seed'],
"impatience_time": 300,
"step_size": 10,
"alpha": OPTIONS['alpha'],
"beta": OPTIONS['beta'],
"name": NAME # for logging
}
})
def launch_local_experiment(init_algo_functions_and_log_fnames,
exp_variant, use_gpu=False,
exp_prefix='test', seeds=1, checkpoint_freq=50,
max_failures=10, resume=False, local_ray=True,
from_remote=False, resources_per_trial=None,
logging_level=logging.DEBUG):
"""Launches a ray experiment locally
Args:
init_algo_functions_and_log_fnames ((function, str)[]): a list of tuples.
The first element of each tuple is a function that returns an algo
in ray format (i.e, has a _train() method that returns a log dict
and will train for a single epoch). The second element is the
filename of the logging file.
exp_variant (dict): the experiment variant. This will be passed in each
time to each init_algo_function in init_algo_functions_and_log_fnames
use_gpu (bool):
exp_prefix (str):
seeds (int):
checkpoint_freq (int): how often to checkpoint for handling failures.
max_failures (int): how many times to retry if a trial fails. Useful for
remote launching.
resume (bool): whether the trials should try and resume a failed trial
if possible.
local_ray (bool): whether to use local_ray mode. stdout get printed and
pdb is possible in local_ray=True.
from_remote (bool): If the experiment is being launched from a remote
instance. User should not set this. Automatically set by
remote_launch.py
resources_per_trial (dict): Specify {'cpu': float, 'gpu': float}. This
is the number of allocated resources to the trial.
logging_level:
"""
if from_remote:
redis_address = ray.services.get_node_ip_address() + ':6379'
ray.init(redis_address=redis_address, logging_level=logging_level)
else:
ray.init(local_mode=local_ray)
for idx, (init_func, log_fname) in enumerate(init_algo_functions_and_log_fnames):
init_algo_functions_and_log_fnames[idx] = (
tune.function(init_func),
log_fname
)
exp = tune.Experiment(
name=exp_prefix,
run=SequentialRayExperiment,
upload_dir=config.LOG_BUCKET,
num_samples=seeds,
stop={"global_done": True},
config={
'algo_variant': exp_variant,
'init_algo_functions_and_log_fnames': init_algo_functions_and_log_fnames,
'use_gpu': use_gpu,
'resources_per_trial': resources_per_trial,
},
resources_per_trial=resources_per_trial,
checkpoint_freq=checkpoint_freq,
loggers=[JsonLogger, SequentialCSVLogger],
)
tune.run(
exp,
resume=resume,
max_failures=max_failures,
queue_trials=True,
)
def main():
parser = argparse.ArgumentParser(description='ChulaSSSEnv DQN Runner')
# === Flags for Name Arguments ===
parser.add_argument('-A',
'--algorithm',
action='store',
default='DQN',
type=str,
help='The algorithm to train',
choices=['DQN', 'APEX'])
parser.add_argument(
'-O',
'--observation',
action='store',
default='default',
type=str,
help='The observation space',
choices=['default', 'all3', "all3_no_downstream", "no_downstream"])
parser.add_argument('-s',
'--seed',
action='store',
default=20,
type=int,
help='Seed number')
parser.add_argument('-g',
'--gamma',
action='store',
default=0.9,
type=float,
help='Discount Factor')
parser.add_argument('-a',
'--alpha',
action='store',
default=10.0,
type=float,
help='Reward throughput coefficient')
parser.add_argument('-b',
'--beta',
action='store',
default=0.0,
type=float,
help='Reward backlog coefficient')
parser.add_argument('-l',
'--learningRate',
action='store',
default=5e-4,
type=str,
help='Learning Rate (scientific notation) ie. 5e-4')
parser.add_argument('-T',
'--annealTimeStep',
action='store',
default='100k',
type=str,
help='Exploration Annealing Timesteps (in k)')
parser.add_argument('-e',
'--epsilon',
action='store',
default=0.1,
type=float,
help='The exploration fraction to anneal to')
parser.add_argument('-p',
'--prioritizedReplay',
action='store_true',
help='Whether to use prioritized replay')
parser.add_argument('-H',
'--hidden',
action='store',
default='256',
type=str,
help='Hidden Layers (comma separated)')
parser.add_argument('-N',
'--noisy',
action='store_true',
help='Noisy network')
parser.add_argument('-D',
'--dueling',
action='store_true',
help='Dueling DQN')
parser.add_argument('-d',
'--double',
action='store_true',
help='Double DQN')
parser.add_argument('-u',
'--updateFreq',
action='store',
default=800,
type=int,
help='Network update frequency')
parser.add_argument('-B',
'--buffer',
action='store',
default='100k',
type=str,
help='Size of replay buffer (in k)')
parser.add_argument('-L',
'--load',
action='store',
default=1.0,
type=float,
help='Load factor of Great routes')
# === Flags for running arguments ===
parser.add_argument('-i',
'--trainIter',
action='store',
default=100000,
type=int,
help='Training Iteration')
parser.add_argument('-c',
'--checkFreq',
action='store',
default=5,
type=int,
help='Checkpoint saving frequency')
parser.add_argument('--learningStart',
action='store',
default=4320,
type=int,
help='Steps before Learning starts')
parser.add_argument('--trainBatch',
action='store',
default=32,
type=int,
help='Training batch size')
parser.add_argument('--sampleBatch',
action='store',
default=4,
type=int,
help='Sample batch size')
args = parser.parse_args()
# Name Structure
# Algorithm_ObservationSpace_Seed_Gamma_Alpha_Beta_LearningRate
# _ExplorationAnnealingTimesteps_ExplorationFraction
# _PrioritizedReplay_Hidden_Noisy_Dueling_DoubleQ_NetworkUpdateFreq_Buffer
# _LoadFactor
#
# ie. DQN_default_s20_g0.6_a10_b1_lr5e-4_et50k_e0.1_pr0_h256_n0_d0_qq0_u800_l1.0
NAME = "{}_{}_s{}_g{}_a{}_b{}_lr{:.0e}_et{}_e{}_pr{:n}_h{}_n{:n}_d{:n}_qq{:n}_u{}_b{}_l{}".format(
args.algorithm, args.observation, args.seed, args.gamma, args.alpha,
args.beta, args.learningRate, args.annealTimeStep, args.epsilon,
args.prioritizedReplay, args.hidden, args.noisy, args.dueling,
args.double, args.updateFreq, args.buffer, args.load)
print("Starting Experiment with name {}".format(NAME))
OPT = NAME.split("_")
OPTIONS = {
"alg": OPT[0],
"obs_space": OPT[1],
"seed": int(OPT[2][1:]),
"gamma": float(OPT[3][1:]),
"alpha": float(OPT[4][1:]),
"beta": float(OPT[5][1:]),
"lr": float(OPT[6][2:]),
"epsilon_ts": int(OPT[7][2:-1]) * 1000,
"epsilon": float(OPT[8][1:]),
"pr": bool(int(OPT[9][2:])),
"hidden": list(map(int, OPT[10][1:].split(','))),
"noisy": bool(int(OPT[11][1:])),
"dueling": bool(int(OPT[12][1:])),
"doubleQ": bool(int(OPT[13][2:])),
"update_freq": int(OPT[14][1:]),
"buffer": int(OPT[15][1:-1]) * 1000,
"load": float(OPT[16][1:])
}
ray.init( #object_store_memory=int(4e9), # 4gb
#redis_max_memory=int(2e9) #2gb
)
experiment_spec = tune.Experiment(
name=NAME,
run=OPTIONS["alg"],
checkpoint_freq=args.checkFreq,
checkpoint_at_end=True,
stop={"training_iteration": args.trainIter},
upload_dir="gs://ray_results/",
custom_loggers=[ActionLogger],
config={
# === Configure Callbacks ===
"callbacks": {
"on_episode_start":
tune.function(logger_callbacks.on_episode_start),
"on_episode_step":
tune.function(logger_callbacks.on_episode_step),
"on_episode_end":
tune.function(logger_callbacks.on_episode_end),
"on_sample_end":
tune.function(logger_callbacks.on_sample_end),
"on_train_result":
tune.function(logger_callbacks.on_train_result),
},
# === Resources ===
# Number of actors used for parallelism
"num_workers": 0,
# Number of GPUs to allocate to the driver. Note that not all algorithms
# can take advantage of driver GPUs. This can be fraction (e.g., 0.3 GPUs).
"num_gpus": 0,
# Number of CPUs to allocate per worker.
"num_cpus_per_worker": 4,
# Number of GPUs to allocate per worker. This can be fractional.
"num_gpus_per_worker": 0,
# Any custom resources to allocate per worker.
"custom_resources_per_worker": {},
# Number of CPUs to allocate for the driver. Note: this only takes effect
# when running in Tune.
"num_cpus_for_driver": 1,
# === Model ===
# Number of atoms for representing the distribution of return. When
# this is greater than 1, distributional Q-learning is used.
# the discrete supports are bounded by v_min and v_max
"num_atoms": 1,
"v_min": -10.0,
"v_max": 10.0,
# Whether to use noisy network
"noisy": OPTIONS['noisy'],
# Whether to use dueling dqn
"dueling": OPTIONS['dueling'],
# Whether to use double dqn
"double_q": OPTIONS['dueling'],
# Hidden layer sizes of the state and action value networks
"hiddens": OPTIONS['hidden'],
# N-step Q learning
"n_step": 1,
# === Exploration ===
# Max num timesteps for annealing schedules. Exploration is annealed from
# 1.0 to exploration_fraction over this number of timesteps scaled by
# exploration_fraction
"schedule_max_timesteps": OPTIONS['epsilon_ts'],
# Number of env steps to optimize for before returning
#morning: 10800/10 = 1080 steps total
"timesteps_per_iteration": 1080,
# Fraction of entire training period over which the exploration rate is
# annealed
"exploration_fraction": 1,
# Final value of random action probability
"exploration_final_eps": OPTIONS['epsilon'],
# Update the target network every `target_network_update_freq` steps.
"target_network_update_freq": OPTIONS['update_freq'],
# === Replay buffer ===
# Size of the replay buffer. Note that if async_updates is set, then
# each worker will have a replay buffer of this size.
"buffer_size": OPTIONS['buffer'],
# If True prioritized replay buffer will be used.
"prioritized_replay": OPTIONS['pr'],
# Alpha parameter for prioritized replay buffer.
"prioritized_replay_alpha": 0.6,
# Beta parameter for sampling from prioritized replay buffer.
"prioritized_replay_beta": 0.4,
# Fraction of entire training period over which the beta parameter is
# annealed
"beta_annealing_fraction": 0.2,
# Final value of beta
"final_prioritized_replay_beta": 0.4,
# Epsilon to add to the TD errors when updating priorities.
"prioritized_replay_eps": 1e-6,
# Whether to LZ4 compress observations
"compress_observations": True,
# === Optimization ===
# Learning rate for adam optimizer
"lr": OPTIONS['lr'],
# Adam epsilon hyper parameter
"adam_epsilon": 1e-8,
# If not None, clip gradients during optimization at this value
"grad_norm_clipping": 40,
# How many steps of the model to sample before learning starts.
"learning_starts": args.learningStart,
# Update the replay buffer with this many samples at once. Note that
# this setting applies per-worker if num_workers > 1.
# Default sample batch size
"sample_batch_size": args.sampleBatch,
# Size of a batched sampled from replay buffer for training. Note that
# if async_updates is set, then each worker returns gradients for a
# batch of this size.
# Training batch size, if applicable. Should be >= sample_batch_size.
# Samples batches will be concatenated together to this size for training.
"train_batch_size": args.trainBatch,
# === Parallelism ===
# Optimizer class to use.
"optimizer_class": "SyncReplayOptimizer",
# Whether to use a distribution of epsilons across workers for exploration.
"per_worker_exploration": False,
# Whether to compute priorities on workers.
"worker_side_prioritization": False,
# Prevent iterations from going lower than this time span
"min_iter_time_s": 1,
# === Environment ===
# Discount factor of the MDP
"gamma": OPTIONS['gamma'],
"env": ChulaSSSEnv,
"env_config": {
"observation_space": OPTIONS['obs_space'],
"time_select": TIME_SELECT_STR,
"great_edition": GREAT_EDITION,
"with_gui": WITH_GUI,
"with_libsumo": WITH_LIBSUMO,
"no_internal_links": True,
"time_to_teleport": -1,
"viewport": VIEWPORT,
"step_length": STEP_LENGTH,
"seed": OPTIONS['seed'],
"impatience_time": IMPATIENCE_TIME,
"step_size": STEP_SIZE,
"alpha": OPTIONS['alpha'],
"beta": OPTIONS['beta'],
"name": NAME,
"load": OPTIONS['load']
}
})
tune.run_experiments(experiment_spec, resume='prompt')
def fit(self, x_user, x_questions, y_vals, **kwargs):
kwargs.setdefault('latent_traits', None)
kwargs.setdefault('batch_size', 16)
kwargs.setdefault('epochs', 64)
kwargs.setdefault('validation_split', 0.2)
kwargs.setdefault('params', self.params)
self.proxy_model.l_traits = kwargs['latent_traits']
self.proxy_model.x_train_user = x_user
self.proxy_model.x_train_questions = x_questions
self.proxy_model.y_ = y_vals
self.l_traits = kwargs['latent_traits']
# affirming if params are given in either of(init or fit) methods
self.params = self.params or kwargs['params']
if self.params != None: # Validate implementation with different types of tune input
if not isinstance(self.params, dict):
raise TypeError("Params should be of type 'dict'")
self.params = _parse_params(self.params, return_as='flat')
self.proxy_model.update_params(self.params)
# triggers for fourPL model
if self.proxy_model.name is 'tpm' and 'slip_params' in self.params and 'train' in self.params['slip_params'].keys():
if self.params['slip_params']['train']:
self.proxy_model.name = 'fourPL'
ray_verbose = False
_ray_log_level = logging.INFO if ray_verbose else logging.ERROR
ray.init(log_to_driver=False, logging_level=_ray_log_level, ignore_reinit_error=True, redis_max_memory=20*1000*1000*1000, object_store_memory=1000000000,
num_cpus=4)
def train_model(config, reporter):
self.proxy_model.set_params(params=config, set_by='optimizer')
print('\nIntitializing fit for {} model. . .\nBatch_size: {}; epochs: {};'.format(
self.proxy_model.name, kwargs['batch_size'], kwargs['epochs']))
model = self.proxy_model.create_model()
self.history = model.fit(x=[x_user, x_questions], y=y_vals, batch_size=kwargs['batch_size'],
epochs=kwargs['epochs'], verbose=0, validation_split=kwargs['validation_split'])
_, mae, accuracy = model.evaluate(
x=[x_user, x_questions], y=y_vals) # [1]
last_checkpoint = "weights_tune_{}.h5".format(
list(zip(np.random.choice(10, len(config), replace=False), config)))
model.save_weights(last_checkpoint)
reporter(mean_error=mae, mean_accuracy=accuracy,
checkpoint=last_checkpoint)
t1 = time.time()
configuration = tune.Experiment("experiment_name",
run=train_model,
resources_per_trial={"cpu": 4},
stop={"mean_error": 0.15,
"mean_accuracy": 95},
config=self.proxy_model.get_params())
trials = tune.run_experiments(configuration, verbose=0)
self.trials = trials
metric = "mean_error" # "mean_accuracy"
# Restore a model from the best trial.
def get_sorted_trials(trial_list, metric):
return sorted(trial_list, key=lambda trial: trial.last_result.get(metric, 0), reverse=True)
sorted_trials = get_sorted_trials(trials, metric)
for best_trial in sorted_trials:
try:
print("Creating model...")
self.proxy_model.set_params(
params=best_trial.config, set_by='optimizer')
best_model = self.proxy_model.create_model()
weights = os.path.join(
best_trial.logdir, best_trial.last_result["checkpoint"])
print("Loading from", weights)
# TODO Validate this loaded model.
best_model.load_weights(weights)
break
except Exception as e:
print(e)
print("Loading failed. Trying next model")
exe_time = time.time()-t1
self.model = best_model
#self.model = model
#print('\nIntitializing fit for {} model. . .\nBatch_size: {}; epochs: {};'.format(self.proxy_model.name, kwargs['batch_size'], kwargs['epochs']))
#model = self.proxy_model.create_model()
#t1= time.time()
# self.history= model.fit(x=[x_user, x_questions], y=y_vals, batch_size=kwargs['batch_size'], epochs=kwargs['epochs'], verbose=0, validation_split=kwargs['validation_split'])#, callbacks= kwargs['callbacks'])#added callbacks
#exe_time = time.time()-t1
#
#self.model = model
# Following lets user access each coeffs as and when required
self.difficulty = self.coefficients()['difficulty_level']
self.discrimination = self.coefficients()['disc_param']
self.guessing = self.coefficients()['guessing_param']
self.slip = self.coefficients()['slip_param']
num_trainables = np.sum([K.count_params(layer)
for layer in self.model.trainable_weights])
sample_size = y_vals.shape[0]
log_lik, _, _ = self.model.evaluate(x=[x_user, x_questions], y=y_vals)
self.AIC = 2*num_trainables - 2*np.log(log_lik)
self.AICc = self.AIC + (2*np.square(num_trainables) +
2*num_trainables)/(sample_size - num_trainables - 1)
print('\nTraining on : {} samples for : {} epochs has completed in : {} seconds.'.format(
self.proxy_model.x_train_user.shape[0], kwargs['epochs'], np.round(exe_time, decimals=3)))
print('\nAIC value: {} and AICc value: {}'.format(
np.round(self.AIC, 3), np.round(self.AICc, 3)))
print('\nUse `object.plot()` to view train/validation loss curves;\nUse `object.history` to obtain train/validation loss across all the epochs.\nUse `object.coefficients()` to obtain model parameters--Question difficulty, discrimination, guessing & slip')
print('Use `object.AIC` & `object.AIC` to obtain Akaike Information Criterion(AIC & AICc) values.')
return self
from ChulaSSSEnv import ChulaSSSEnv
if __name__ == "__main__":
ray.init()
experiment_spec = tune.Experiment(
name = "experiment_dqn",
run = "DQN",
config = {
"num_gpus": 0,
"num_workers": 1,
"env": ChulaSSSEnv,
"env_config" : {"observation_space": "default",
"time_select" : "morning",
"great_edition" : True,
"with_gui" : False,
"with_libsumo" : True,
"no_internal_links" : True,
"time_to_teleport": -1,
"viewport": "surasak",
"step_length": 1,
"seed" : 20,
"impatience_time": 300,
"step_size" : 10,
"alpha":10,
"beta":1,
}
}
)
tune.run_experiments(experiment_spec, resume=True)