- class torchrl.objectives.distance_loss(v1: Tensor, v2: Tensor, loss_function: str, strict_shape: bool = True)¶
Computes a distance loss between two tensors.
v1 (Tensor) – a tensor with a shape compatible with v2
v2 (Tensor) – a tensor with a shape compatible with v1
loss_function (str) – One of “l2”, “l1” or “smooth_l1” representing which loss function is to be used.
strict_shape (bool) – if False, v1 and v2 are allowed to have a different shape. Default is
A tensor of the shape v1.view_as(v2) or v2.view_as(v1) with values equal to the distance loss between the