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Zahra Rajabi
pymdptoolbox
Commits
7fa677ca
Commit
7fa677ca
authored
Jan 20, 2013
by
Steven Cordwell
Browse files
docstring fixes
parent
40b39d86
Changes
1
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1 changed file
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12 additions
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9 deletions
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-9
mdp.py
mdp.py
+12
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mdp.py
View file @
7fa677ca
...
...
@@ -526,7 +526,7 @@ class PolicyIteration(MDP):
#self.value = matrix(zeros((self.S, 1)))
else
:
if
(
len
(
initial_value
)
!=
self
.
S
):
raise
Typ
eError
(
"The initial value must be length S"
)
raise
Valu
eError
(
"The initial value must be length S"
)
self
.
value
=
matrix
(
initial_value
)
...
...
@@ -799,9 +799,9 @@ class ValueIteration(MDP):
Description
-----------
mdp
_v
alue
_i
teration applies the value iteration algorithm to solve
mdp
.V
alue
I
teration applies the value iteration algorithm to solve
discounted MDP. The algorithm consists in solving Bellman's equation
iteratively.
iteratively.
Iterating is stopped when an epsilon-optimal policy is found or after a
specified number (max_iter) of iterations.
This function uses verbose and silent modes. In verbose mode, the function
...
...
@@ -813,7 +813,6 @@ class ValueIteration(MDP):
Parameters
----------
P : transition matrix
P could be a numpy ndarray with 3 dimensions (AxSxS) or a
numpy ndarray of dytpe=object with 1 dimenion (1xA), each
...
...
@@ -836,12 +835,12 @@ class ValueIteration(MDP):
Data Attributes
---------------
value : value function
A vector which stores the optimal value function.
It exists only after
the
iterate() method has
been called
. Shape is (S, ).
A vector which stores the optimal value function.
Prior to calling the
iterate() method
it
has
a value of None
. Shape is (S, ).
policy : epsilon-optimal policy
A vector which stores the optimal policy.
It exists only after
the
iterate() method has
been called
. Shape is (S, ).
iter : number of
done iter
ation
s
A vector which stores the optimal policy.
Prior to calling the
iterate() method
it
has
a value of None
. Shape is (S, ).
iter : number of
iterations taken to complete the comput
ation
An integer
time : used CPU time
A float
...
...
@@ -982,6 +981,10 @@ class ValueIteration(MDP):
def
iterate
(
self
):
"""
"""
if
self
.
verbose
:
print
(
' Iteration V_variation'
)
self
.
time
=
time
()
done
=
False
while
not
done
:
...
...
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