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Classical and Quantum Algorithms for Tensor Principal Component Analysis

Date:

Matthew B. Hastings

Station Q, Microsoft Research, Santa Barbara, CA 93106-6105, USA
Microsoft Quantum and Microsoft Research, Redmond, WA 98052, USA

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Abstract

We present classical and quantum algorithms based on spectral methods for a problem in tensor principal component analysis. The quantum algorithm achieves a $quartic$ speedup while using exponentially smaller space than the fastest classical spectral algorithm, and a super-polynomial speedup over classical algorithms that use only polynomial space. The classical algorithms that we present are related to, but slightly different from those presented recently in Ref. [1]. In particular, we have an improved threshold for recovery and the algorithms we present work for both even and odd order tensors. These results suggest that large-scale inference problems are a promising future application for quantum computers.

► BibTeX data

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< p class="break">[23] Matthew B. Hastings. The asymptotics of quantum max-flow min-cut. Communications in Mathematical Physics, 351(1):387–418, nov 2016. doi:10.1007/​s00220-016-2791-8.
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Cited by

[1] Alexander S. Wein, Ahmed El Alaoui, and Cristopher Moore, “The Kikuchi Hierarchy and Tensor PCA”, arXiv:1904.03858.

The above citations are from SAO/NASA ADS (last updated successfully 2020-02-28 01:28:52). The list may be incomplete as not all publishers provide suitable and complete citation data.

On Crossref’s cited-by service no data on citing works was found (last attempt 2020-02-28 01:28:50).

Source: https://quantum-journal.org/papers/q-2020-02-27-237/

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