Testing graph blow-Up

  • Authors:
  • Lidor Avigad;Oded Goldreich

  • Affiliations:
  • Rehovot, Israel;Department of Computer Science, Weizmann Institute of Science, Rehovot, Israel

  • Venue:
  • APPROX'11/RANDOM'11 Proceedings of the 14th international workshop and 15th international conference on Approximation, randomization, and combinatorial optimization: algorithms and techniques
  • Year:
  • 2011

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Abstract

Referring to the query complexity of testing graph properties in the adjacency matrix model, we advance the study of the class of properties that can be tested non-adaptively within complexity that is inversely proportional to the proximity parameter. Arguably, this is the lowest meaningful complexity class in this model, and we show that it contains a very natural class of graph properties. Specifically, for every fixed graph H, we consider the set of all graphs that are obtained by a (possibly unbalanced) blow-up of H. We show a non-adaptive tester of query complexity : Õ(1/ε) that distinguishes graphs that are a blow-up of H from graphs that are ε-far from any such blow-up.