Manhattan Distance¶
Functional Interface¶
- torchmetrics.functional.pairwise_manhattan_distance(x, y=None, reduction=None, zero_diagonal=None)[source]
Calculate pairwise manhattan distance.
If both
and
are passed in, the calculation will be performed pairwise between the rows of
and
. If only
is passed in, the calculation will be performed between the rows of
.
- Parameters:
reduction¶ (
Optional
[Literal
['mean'
,'sum'
,'none'
,None
]]) – reduction to apply along the last dimension. Choose between ‘mean’, ‘sum’ (applied along column dimension) or ‘none’, None for no reductionzero_diagonal¶ (
Optional
[bool
]) – if the diagonal of the distance matrix should be set to 0. If only x is given this defaults to True else if y is also given it defaults to False
- Return type:
- Returns:
A
[N,N]
matrix of distances if onlyx
is given, else a[N,M]
matrix
Example
>>> import torch >>> from torchmetrics.functional.pairwise import pairwise_manhattan_distance >>> x = torch.tensor([[2, 3], [3, 5], [5, 8]], dtype=torch.float32) >>> y = torch.tensor([[1, 0], [2, 1]], dtype=torch.float32) >>> pairwise_manhattan_distance(x, y) tensor([[ 4., 2.], [ 7., 5.], [12., 10.]]) >>> pairwise_manhattan_distance(x) tensor([[0., 3., 8.], [3., 0., 5.], [8., 5., 0.]])