def run_a2c_experiment(entropy_reg, run: int):
"""
This function runs a single run of a2c on cartpole using the specified parameters
:param entropy_reg: Entropy regularization on the policy loss function, higher means a more random policy
:param run: Specifies the run number, this is used in the filename of the output file
"""
import keras as ks
import numpy as np
from agents.actor_critic import ActorCriticAgent
from environments.cartpole import CartPole
from q_network_sarsa_lambda import QNetworkSL
from p_network import PNetwork
from experiment_util import Logger
value_network = ks.models.Sequential()
value_network.add(
ks.layers.Dense(150, activation='relu', input_shape=(4, )))
value_network.add(ks.layers.Dense(50, activation='relu',
input_shape=(4, )))
value_network.add(ks.layers.Dense(2, activation='linear'))
value_network.compile(optimizer=ks.optimizers.Adam(lr=0.001), loss='mse')
policy_network = ks.models.Sequential()
policy_network.add(
ks.layers.Dense(150, activation='relu', input_shape=(4, )))
policy_network.add(
ks.layers.Dense(50, activation='relu', input_shape=(4, )))
policy_network.add(ks.layers.Dense(2, activation='softmax'))
l = Logger(filename="../results/AC_VS_SL_cartpole_a2c_%.5f_%d.h5" %
(entropy_reg, run))
env = CartPole(render=False)
actions = env.valid_actions()
dn = QNetworkSL(value_network,
actions,
lambda x: np.reshape(x.state, newshape=(1, 4)),
lambd=0.9,
gamma=1.0,
reward_factor=0.01,
fixed_length=100,
lambda_min=1e-2)
pn = PNetwork(policy_network,
actions,
lambda x: np.array(x.state),
fixed_steps=100,
entropy_regularization=entropy_reg,
alpha=0.001,
use_advantage=True)
ac = ActorCriticAgent(env, dn, pn, replay_memory_size=1000)
c = ac.get_configuration()
experiment = l.start_experiment(c)
q = ac.learn(num_episodes=250, result_handler=experiment.log)
def run_saraslambda_experiment(epsilon_start, epsilon_min, epsilon_decay,
run: int):
"""
Runs deep sarasa lambda on cartpole
:param epsilon_start: Starting epsilon value
:param epsilon_min: Minimum epsilon value
:param epsilon_decay: Factor multiplied with epsilon each step
:param run: Run identifier used in the output filename
:return:
"""
import keras as ks
import numpy as np
from agents.deep_sarsa import DeepSarsa
from environments.cartpole import CartPole
from q_network_sarsa_lambda import QNetworkSL
from experiment_util import Logger
value_network = ks.models.Sequential()
value_network.add(
ks.layers.Dense(150, activation='relu', input_shape=(4, )))
value_network.add(ks.layers.Dense(50, activation='relu',
input_shape=(4, )))
value_network.add(ks.layers.Dense(2, activation='linear'))
value_network.compile(optimizer=ks.optimizers.Adam(lr=0.001), loss='mse')
l = Logger(filename="../results/AC_VS_SL_cartpole_sl_%.4f_%.4f_%f_%d.h5" %
(epsilon_start, epsilon_min, epsilon_decay, run))
env = CartPole(render=False)
actions = env.valid_actions()
dn = QNetworkSL(value_network,
actions,
lambda x: np.reshape(x.state, newshape=(1, 4)),
lambd=0.9,
gamma=1.0,
reward_factor=0.01,
fixed_length=100,
lambda_min=1e-2)
sarsa = DeepSarsa(env,
dn,
replay_memory_size=1000,
epsilon_min=epsilon_min,
epsilon_step_factor=epsilon_decay,
epsilon=epsilon_start)
c = sarsa.get_configuration()
experiment = l.start_experiment(c)
q = sarsa.learn(num_episodes=250, result_handler=experiment.log)
if __name__ == '__main__':
import keras as ks
import numpy as np
from agents.deep_q import DeepQLearning
from environments.cartpole import CartPole
from q_network import QNetwork
nn = ks.models.Sequential()
nn.add(ks.layers.Dense(32, activation='sigmoid', input_shape=(4, )))
nn.add(ks.layers.Dense(32, activation='sigmoid'))
nn.add(ks.layers.Dense(2, activation='linear'))
nn.compile(optimizer=ks.optimizers.Adam(lr=0.001), loss='mse')
env = CartPole(render=True)
actions = env.valid_actions()
dqn = QNetwork(nn, actions, lambda x: np.reshape(x.state, newshape=(1, 4)))
dql = DeepQLearning(env, dqn)
q = dql.learn()
"""
Add one sample to the replay memory
:param s: State
:param a: Action performed on that state
:param r: Reward obtained from performing the action
:param sp: Resulting state
"""
self.replay_memory.append((s, a, r, sp))
if __name__ == '__main__':
import keras as ks
from environments.cartpole import CartPole
nn = ks.models.Sequential()
nn.add(ks.layers.Dense(32, activation='sigmoid', input_shape=(4,)))
nn.add(ks.layers.Dense(32, activation='sigmoid'))
nn.add(ks.layers.Dense(2, activation='linear'))
nn.compile(optimizer=ks.optimizers.Adam(lr=0.001),
loss='mse')
_e = CartPole(render=True)
_out_map = _e.valid_actions()
dqn = QNetwork(nn, _out_map, lambda x: np.reshape(x.observation, newshape=(1, 4)))
dql = DeepQLearning(_e, dqn)
q = dql.learn()