xxt: Calculate matrix multipication between a matrix and its...

In KRIS: Keen and Reliable Interface Subroutines for Bioinformatic Analysis

Description

Calculate matrix multiplication using "divide and conquer technique", which accelerates the computation to be faster.

Usage

xxt(X, window.size = 5)

Arguments

X	An input matrix to be processed.
window.size	The window size of matrices to be devided. The default value is 5.

Value

The multiplication matrix of X.t(X).

Examples

#Use the example files embedded in the package.
X <-matrix(runif(100), ncol=20)
R1  <- xxt(X)

#Show the result (R1)
print(R1)
R2 <- X %*% t(X)

#Show the result (R2)
print(R2)

KRIS documentation built on Jan. 21, 2021, 5:08 p.m.