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Zhousiyuhit avatar Zhousiyuhit commented on May 26, 2024 2

I modified the code based on tensorflow 2.0, and now there are no other problems.

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Zhousiyuhit avatar Zhousiyuhit commented on May 26, 2024

Hello, I have encountered the same question as you. Have you solved it?

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magnusja avatar magnusja commented on May 26, 2024

Hello there,

please refer to my fork of this repository, which not only fixes that but also implements highly efficient methods for calculating the state visitation frequency, in tf but also vectorized using numpy. The code in this repository is completely unusable when you need more states than the 5 by 5 example grid ;D

The trick to fix the bug is essentially to take the average over timestamps. This is not mentioned anywhere except this video: https://youtu.be/d9DlQSJQAoI?t=973 (watch for a minute or so then Chelsea mentions that the calculation is missing an average).

See this note of mine as well:
https://github.com/magnusja/irl-imitation/blob/master/deep_maxent_irl.py#L340-L348

Let me know if you have further questions.

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Zhousiyuhit avatar Zhousiyuhit commented on May 26, 2024

from irl-imitation.

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