Method log_probability

Args: z: Tensor tensor of latent code [batch, length, nz] tgt_mask: Tensor tensor of target masks [batch, length] src: Tensor source encoding [batch, src_length, hidden_size] ctx: Tensor

(self, z: torch.Tensor, tgt_mask: torch.Tensor,
                        src: torch.Tensor, ctx: torch.Tensor, src_mask: torch.Tensor,
                        length_loss: bool = True)