torch_sum {torch}

Sum

Description

Sum

Usage

torch_sum(self, dim, keepdim = FALSE, dtype = NULL)

Arguments

self

(Tensor) the input tensor.

dim

(int or tuple of ints) the dimension or dimensions to reduce.

keepdim

(bool) whether the output tensor has dim retained or not.

dtype

(torch.dtype, optional) the desired data type of returned tensor. If specified, the input tensor is casted to dtype before the operation is performed. This is useful for preventing data type overflows. Default: NULL.

sum(input, dtype=NULL) -> Tensor

Returns the sum of all elements in the input tensor.

sum(input, dim, keepdim=False, dtype=NULL) -> Tensor

Returns the sum of each row of the input tensor in the given dimension dim. If dim is a list of dimensions, reduce over all of them.

If keepdim is TRUE, the output tensor is of the same size as input except in the dimension(s) dim where it is of size 1. Otherwise, dim is squeezed (see torch_squeeze), resulting in the output tensor having 1 (or len(dim)) fewer dimension(s).

Examples

if (torch_is_installed()) {

a = torch_randn(c(1, 3))
a
torch_sum(a)


a <- torch_randn(c(4, 4))
a
torch_sum(a, 1)
b <- torch_arange(1, 4 * 5 * 6)$view(c(4, 5, 6))
torch_sum(b, list(2, 1))
}