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Fast BLAS-Accelerated Cross-Distance Squared Matrix

Source: R/00_utils.R
fast_cross_distance_sq.Rd

Computes ||X_i - Y_j||^2 using BLAS matrix product: ||x||^2 + ||y||^2 - 2 <x, y>.

Usage

fast_cross_distance_sq(X, Y)

Arguments

X

Matrix (m x p).

Y

Matrix (n x p).

Value

Matrix of squared Euclidean distances (m x n).