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Why the maximum error is 0.5 when using PER? #1

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hipoglucido opened this issue May 3, 2018 · 0 comments
Open

Why the maximum error is 0.5 when using PER? #1

hipoglucido opened this issue May 3, 2018 · 0 comments

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@hipoglucido
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hipoglucido commented May 3, 2018 •
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RainBow/replayMemory.py

Line 70 in 252f7ef

# 0.5 is the maximum error

When a new experience is going to be added in the PER memory it should be registered with the maximum priority hence the the maximum error. Why the maximum error is 0.5 when using PER? If I understood the paper it is said that maximal priority should be taken as the current maximum priority value that exists in the memory.
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