Thomas Lumley • 4/1/2021

A modest proposal for matrix multiplication

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This article presents a method for performing matrix multiplication using tidy data principles in R. It explains how to store matrices in data frames and implement multiplication via joins, drawing parallels to Einstein summation convention for tensors. The approach naturally handles sparse matrices and database-stored data, offering efficiency benefits.

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#R Programming #Matrix Multiplication #Tidy Data
A modest proposal for matrix multiplication

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