Deterministic Identity Testing for Sum of Read-Once Oblivious Arithmetic Branching Programs
Deterministic Identity Testing for Sum of Read-Once Oblivious Arithmetic Branching Programs
复制标题
一次读取的不经意算术分支程序之和的确定性身份测试
DOI:
10.1007/s00037-016-0141-z
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发表时间:
2017
影响因子:
1.4
通讯作者:
Thomas Thierauf
中科院分区:
文献类型:
--
作者:
Rohit Gurjar;Arpita Korwar;Nitin Saxena;Thomas Thierauf
Aread-once oblivious arithmetic branching program (ROABP)is an arithmetic branching program (ABP) where each variable occurs in at most one layer. We give the first polynomial-time whitebox identity test for a polynomial computed by a sum of constantly many ROABPs. We also give a corresponding blackbox algorithm with quasi-polynomial-time complexity. In both the cases, our time complexity is double exponential in the number of ROABPs.ROABPs are a generalization of set-multilinear depth-3 circuits. The prior results for the sum of constantly many set-multilinear depth-3 circuits were only slightly better than brute force, i.e., exponential time. Our techniques are a new interplay of three concepts for ROABP: low evaluation dimension, basis isolating weight assignment and low-support rank concentration. We relate basis isolation to rank concentration and extend it to a sum of two ROABPs using evaluation dimension.
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影响因子:
1.4
作者:
R. Oliveira;Amir Shpilka;Ben lee Volk
通讯作者:
Ben lee Volk
DOI:
10.1109/focs.2009.67
发表时间:
2009
期刊:
2009 50th Annual IEEE Symposium on Foundations of Computer Science
影响因子:
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作者:
N. Kayal;Shubhangi Saraf
通讯作者:
Shubhangi Saraf
DOI:
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发表时间:
2020
期刊:
Symposium on Theoretical Aspects of Computer Science
影响因子:
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作者:
N. Kayal;Vineet Nair;Chandan Saha
通讯作者:
Chandan Saha
DOI:
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发表时间:
1996
期刊:
Formal Methods Syst. Des.
影响因子:
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作者:
Jordan Gergov;C. Meinel
通讯作者:
C. Meinel
DOI:
--
发表时间:
1991
期刊:
Symposium on the Theory of Computing
影响因子:
--
作者:
N. Nisan
通讯作者:
N. Nisan