init_mean_cost#

init_mean_cost(X: ndarray) tuple[ndarray, ndarray, ndarray][source]#

Precompute sums and weights for mean_cost.

Parameters:
Xnp.ndarray

2D array.

Returns:
sumsnp.ndarray

Cumulative sums of X.

sums2np.ndarray

Cumulative sums of X**2.

weightsnp.ndarray

Weights for sums2 in the cost calculation.