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Bugfix: Tree Capacity #1

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Bugfix: Tree Capacity #1

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93fa326
Update sum_tree.py
llucid-97 Jul 8, 2019
04c9c80
Update prioritized_memory.py
llucid-97 Jul 8, 2019
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3 changes: 3 additions & 0 deletions prioritized_memory.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,9 @@

class Memory: # stored as ( s, a, r, s_ ) in SumTree
def __init__(self, capacity, alpha=0.6, beta=0.4, beta_anneal_step=0.001, epsilon=0.00000001):
tree_capacity = 1
while tree_capacity < size:
tree_capacity *= 2
self.tree = SumTree(capacity)
self.capacity = capacity
self.a = alpha
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1 change: 1 addition & 0 deletions sum_tree.py
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Expand Up @@ -7,6 +7,7 @@ class SumTree:
write = 0

def __init__(self, capacity):
assert capacity > 0 and capacity & (capacity - 1) == 0, "capacity must be positive and a power of 2."
self.capacity = capacity
self.tree = numpy.zeros(2 * capacity - 1)
self.data = numpy.zeros(capacity, dtype=object)
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