log_softmax(input, dim, *, dtype=None) → Tensor¶
Applies a softmax function followed by logarithm.
softmaxfor more details.
input (Tensor) – input
dim (int) – A dimension along which softmax will be computed.
torch.dtype, optional) – the desired data type of returned tensor. If specified, the input tensor is casted to
dtypebefore the operation is performed. This is useful for preventing data type overflows. Default: None