with being the (tall thin) matrix from the ML-cup dataset by Prof. Micheli, , and is a random vector. (A1) is thin QR factorization via Householder reflectors, cf. also Lecture 10. (A2) is a variant ...
Abstract: We consider computing the QR factorization with column pivoting (QRCP) for a tall and skinny matrix, which has important applications including low-rank approximation and rank determination.
A distributed-memory parallel implementation of the sparsified QR factorization algorithm using the TaskTorrent runtime system. This repository provides efficient QR factorization for large sparse ...
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