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Complete Derandomization of Identity Testing and Reconstruction of Read-Once Formulas

Complete Derandomization of Identity Testing and Reconstruction of Read-Once Formulas In this article, we study the identity testing problem of arithmetic read-once formulas (ROFs) and some related models. An ROF is a formula (a circuit whose underlying graph is a tree) in which the operations are +, and such that every input variable labels at most one leaf. We obtain the first polynomial-time deterministic identity testing algorithm that operates in the black-box setting for ROFs, as well as some other related models. As an application, we obtain the first polynomial-time deterministic reconstruction algorithm for such formulas. Our results are obtained by improving and extending the analysis of the algorithm of Shpilka and Yolkovich [51]. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ACM Transactions on Computation Theory (TOCT) Association for Computing Machinery

Complete Derandomization of Identity Testing and Reconstruction of Read-Once Formulas

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References (70)

Publisher
Association for Computing Machinery
Copyright
Copyright © 2018 ACM
ISSN
1942-3454
eISSN
1942-3462
DOI
10.1145/3196836
Publisher site
See Article on Publisher Site

Abstract

In this article, we study the identity testing problem of arithmetic read-once formulas (ROFs) and some related models. An ROF is a formula (a circuit whose underlying graph is a tree) in which the operations are +, and such that every input variable labels at most one leaf. We obtain the first polynomial-time deterministic identity testing algorithm that operates in the black-box setting for ROFs, as well as some other related models. As an application, we obtain the first polynomial-time deterministic reconstruction algorithm for such formulas. Our results are obtained by improving and extending the analysis of the algorithm of Shpilka and Yolkovich [51].

Journal

ACM Transactions on Computation Theory (TOCT)Association for Computing Machinery

Published: May 23, 2018

Keywords: Arithmetic circuit

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