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Change _reward_fn to take action taken #166

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Jun 16, 2021

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RobertKirk
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In standard RL often the reward function takes as input the action
taken. This change allows that to happen by adjusting _reward_fn.

See issue #155 for more details

Closes #155

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Looks good, short comment below.

@@ -194,7 +196,7 @@ def __init__(self, *args, **kwargs):

super().__init__(*args, options=options, **kwargs)

def _reward_fn(self, last_observation, observation, end_status):
def _reward_fn(self, last_observation, action, observation, end_status):
"""Difference between previous gold and new gold."""
del end_status # Unused
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Thanks! To keep this in line with how this code was written so far, would you mind adding del action lines to make linters happy about action not being used in these functions at this point?

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Sure thing, I've made that change

In standard RL often the reward function takes as input the action
taken. This change allows that to happen by adjusting _reward_fn.

See issue facebookresearch#155 for more details
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Awesome, thanks!

@heiner heiner merged commit fc8e272 into facebookresearch:master Jun 16, 2021
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Allow reward function to consider action taken
3 participants