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dotvecmat

Vector times matrix from left side, i.e. transpose(x)A.

Parameters

  • x

    Type → Mapping[Any, float]

  • A

    Type → Mapping[tuple[Any, Any], float]

Examples

from river import utils

x = {0: 4, 1: 5}

A = {
    (0, 0): 0, (0, 1): 1,
    (1, 0): 2, (1, 1): 3
}

C = utils.math.dotvecmat(x, A)
print(C)

{0: 10.0, 1: 19.0}