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  • 标题:Towards An Optimal Query Efficient PCP?
  • 本地全文:下载
  • 作者:Subhash Khot ; Muli Safra ; Madhur Tulsiani
  • 期刊名称:Electronic Colloquium on Computational Complexity
  • 印刷版ISSN:1433-8092
  • 出版年度:2012
  • 卷号:2012
  • 出版社:Universität Trier, Lehrstuhl für Theoretische Computer-Forschung
  • 摘要:

    We construct a PCP based on the hyper-graph linearity test with 3 free queries. It has near-perfect completeness and soundness strictly less than 1/8. Such a PCP was known before only assuming the Unique Games Conjecture, albeit with soundness arbitrarily close to 1/16.At a technical level, our main contribution is constructing a new outer PCP which is ``robust'' against bounded degree polynomials, and showing that it can be composed with the hyper-graph linearity test with 3 free queries. We believe this outer PCP may be useful in obtaining the optimal query vs. soundness tradeoff for PCPs.

  • 关键词:constraint satisfaction; PCPs
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