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use lerp for polyak updates #2136

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use lerp for polyak updates #2136

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5839bd6
use lerp for polyak updates
ClashLuke May 12, 2025
2f26966
Merge branch 'master' into patch-1
ClashLuke May 16, 2025
59649f6
Merge branch 'master' into patch-1
ClashLuke Jul 2, 2025
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4 changes: 1 addition & 3 deletions stable_baselines3/common/utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -557,9 +557,7 @@ def polyak_update(
with th.no_grad():
# zip does not raise an exception if length of parameters does not match.
for param, target_param in zip_strict(params, target_params):
target_param.data.mul_(1 - tau)
th.add(target_param.data, param.data, alpha=tau, out=target_param.data)

target_param.data.lerp_(param.data, tau)

def obs_as_tensor(obs: Union[np.ndarray, dict[str, np.ndarray]], device: th.device) -> Union[th.Tensor, TensorDict]:
"""
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