def __init__(self,
transitions,
reward,
discount,
eps=0.01,
n_iter=10000,
skip_check=False):
# Initialise a Q-learning MDP.
# The following check won't be done in MDP()'s initialisation, so let's
# do it here
self.max_iter = int(n_iter)
assert self.max_iter >= 10000, "'n_iter' should be greater than 10000."
if not skip_check:
# We don't want to send this to MDP because _computePR should not
# be run on it, so check that it defines an MDP
_util.check(transitions, reward)
# Store P, S, and A
self.S, self.A = _computeDimensions(transitions)
self.P = self._computeTransition(transitions)
self.R = reward
self.discount = discount
self.eps = eps
# Initialisations
self.Q = _np.zeros((self.S, self.A))
self.mean_discrepancy = []
def __init__(self, transitions, reward, discount, start_state, goal_states, n_iter=10000, num_restarts=100, timeout_iters=1000):
# Initialise a Q-learning MDP.
# The following check won't be done in MDP()'s initialisation, so let's
# do it here
self.max_iter = int(n_iter)
assert self.max_iter >= 10000, "'n_iter' should be greater than 10000."
# We don't want to send this to MDP because _computePR should not be
# run on it, so check that it defines an MDP
_util.check(transitions, reward)
# Store P, S, and A
self.S, self.A = _computeDimensions(transitions)
self.P = self._computeTransition(transitions)
self.R = reward
self.discount = discount
self.start_state = start_state
self.goal_states = goal_states
self.num_restarts = num_restarts
self.timeout_iters = timeout_iters
# Initialisations
self.Q = _np.zeros((self.S, self.A))
self.mean_discrepancy = []
def __init__(self, transitions, reward, grid, start, goals, n_restarts=1000, alpha = 0.2, gamma = 0.9, rar = 0.9, radr = 0.99, n_iter=100000):
# Initialise a Q-learning MDP.
# The following check won't be done in MDP()'s initialisation, so let's
# do it here
self.max_iter = int(n_iter)
assert self.max_iter >= 10000, "'n_iter' should be greater than 10000."
# We don't want to send this to MDP because _computePR should not be
# run on it, so check that it defines an MDP
_util.check(transitions, reward)
# Store P, S, and A
self.S, self.A = _computeDimensions(transitions)
self.P = self._computeTransition(transitions)
self.R = reward
self.alpha = alpha
self.gamma = gamma
self.rar = rar
self.orig_rar = rar
self.radr = radr
self.start = start
self.goals = goals
self.n_restarts = n_restarts
# Initialisations
self.Q = np.random.uniform(-1, 1, (self.S, self.A))
self.tracker = np.zeros(grid.shape)
self.ncols = grid.shape[1]
self.mean_discrepancy = []
def __init__(self, transitions, reward, discount, epsilon, max_iter,
skip_check=True, sparse=False):
# Initialise a MDP based on the input parameters.
self.sparse = sparse
# if the discount is None then the algorithm is assumed to not use it
# in its computations
if discount is not None:
self.discount = float(discount)
assert 0.0 < self.discount <= 1.0, (
"Discount rate must be in ]0; 1]"
)
if self.discount == 1:
print("WARNING: check conditions of convergence. With no "
"discount, convergence can not be assumed.")
# if the max_iter is None then the algorithm is assumed to not use it
# in its computations
if max_iter is not None:
self.max_iter = int(max_iter)
assert self.max_iter > 0, (
"The maximum number of iterations must be greater than 0."
)
# check that epsilon is something sane
if epsilon is not None:
self.epsilon = float(epsilon)
assert self.epsilon > 0, "Epsilon must be greater than 0."
# this will fail for Kroneicker representation right now - but we can
# write a new check function to make sure dimensions match
if not skip_check:
# We run a check on P and R to make sure they are describing an
# MDP. If an exception isn't raised then they are assumed to be
# correct.
_util.check(transitions, reward)
self.A = transitions.shape[0]
print("There are",self.A,"actions")
self.P = self._computeTransition(transitions)
self.S = self.P[0].N
print("The joint state space is size", self.S)
self.R = self._computeReward(reward, transitions)
# the verbosity is by default turned off
self.verbose = False
# Initially the time taken to perform the computations is set to None
self.time = None
# set the initial iteration count to zero
self.iter = 0
# V should be stored as a vector ie shape of (S,) or (1, S)
self.V = None
# policy can also be stored as a vector
self.policy = None
def __init__(self, transitions, reward, discount, epsilon, max_iter,
skip_check=False):
# Initialise a MDP based on the input parameters.
# if the discount is None then the algorithm is assumed to not use it
# in its computations
if discount is not None:
self.discount = float(discount)
assert 0.0 < self.discount <= 1.0, (
"Discount rate must be in ]0; 1]"
)
if self.discount == 1:
print("WARNING: check conditions of convergence. With no "
"discount, convergence can not be assumed.")
# if the max_iter is None then the algorithm is assumed to not use it
# in its computations
if max_iter is not None:
self.max_iter = int(max_iter)
assert self.max_iter > 0, (
"The maximum number of iterations must be greater than 0."
)
# check that epsilon is something sane
if epsilon is not None:
self.epsilon = float(epsilon)
assert self.epsilon > 0, "Epsilon must be greater than 0."
if not skip_check:
# We run a check on P and R to make sure they are describing an
# MDP. If an exception isn't raised then they are assumed to be
# correct.
_util.check(transitions, reward)
self.S, self.A = _computeDimensions(transitions)
self.P = self._computeTransition(transitions)
self.R = self._computeReward(reward, transitions)
# the verbosity is by default turned off
self.verbose = False
# Initially the time taken to perform the computations is set to None
self.time = None
# set the initial iteration count to zero
self.iter = 0
# V should be stored as a vector ie shape of (S,) or (1, S)
self.V = None
# policy can also be stored as a vector
self.policy = None
def __init__(self,
transitions,
reward,
grid,
start,
goals,
n_restarts=1000,
alpha=0.2,
gamma=0.9,
rar=0.9,
radr=0.99,
n_iter=100000):
# Initialise a Q-learning MDP.
# The following check won't be done in MDP()'s initialisation, so let's
# do it here
self.max_iter = int(n_iter)
#assert self.max_iter >= 10000, "'n_iter' should be greater than 10000."
# We don't want to send this to MDP because _computePR should not be
# run on it, so check that it defines an MDP
_util.check(transitions, reward)
# Store P, S, and A
self.S, self.A = _computeDimensions(transitions)
self.P = self._computeTransition(transitions)
self.R = reward
self.alpha = alpha
self.gamma = gamma
self.rar = rar
self.orig_rar = rar
self.radr = radr
self.start = start
self.goals = goals
self.n_restarts = n_restarts
# Initialisations
self.Q = np.random.uniform(-1, 1, (self.S, self.A))
self.tracker = np.zeros(grid.shape)
self.ncols = grid.shape[1]
self.mean_discrepancy = []
def __init__(self, transitions, reward, discount, epsilon, max_iter):
# Initialise a MDP based on the input parameters.
# if the discount is None then the algorithm is assumed to not use it
# in its computations
if discount is not None:
self.discount = float(discount)
assert 0.0 < self.discount <= 1.0, "Discount rate must be in ]0; 1]"
if self.discount == 1:
print("WARNING: check conditions of convergence. With no "
"discount, convergence can not be assumed.")
# if the max_iter is None then the algorithm is assumed to not use it
# in its computations
if max_iter is not None:
self.max_iter = int(max_iter)
assert self.max_iter > 0, "The maximum number of iterations " \
"must be greater than 0."
# check that epsilon is something sane
if epsilon is not None:
self.epsilon = float(epsilon)
assert self.epsilon > 0, "Epsilon must be greater than 0."
# we run a check on P and R to make sure they are describing an MDP. If
# an exception isn't raised then they are assumed to be correct.
_util.check(transitions, reward)
self.S, self.A = _computeDimensions(transitions)
self.P = self._computeTransition(transitions)
self.R = self._computeReward(reward, transitions)
# the verbosity is by default turned off
self.verbose = False
# Initially the time taken to perform the computations is set to None
self.time = None
# set the initial iteration count to zero
self.iter = 0
# V should be stored as a vector ie shape of (S,) or (1, S)
self.V = None
# policy can also be stored as a vector
self.policy = None
