QR Matrix Decomposition (Matrix Factorization Collaborative Filtering)

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Time Complexity

$O(n^{2})$

Space Complexity

$O(n^{2})$ words

(Computes and stores (intermediate steps of) factorization)

Description

Approximate?

Exact

Randomized?

No, deterministic

Model of Computation

Word/Real RAM

Year

1955

Reference

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