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Fix DQN bug (wrong target Q-value for illegal actions) #1259

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Aug 5, 2024
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Fix DQN bug (wrong target Q-value for illegal actions) #1259

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2 changes: 1 addition & 1 deletion open_spiel/python/pytorch/dqn.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,7 +30,7 @@
"Transition",
"info_state action reward next_info_state is_final_step legal_actions_mask")

ILLEGAL_ACTION_LOGITS_PENALTY = sys.float_info.min
ILLEGAL_ACTION_LOGITS_PENALTY = torch.finfo(torch.float).min


class SonnetLinear(nn.Module):
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