On Proximity-Oblivious Testing

  • Authors:
  • Oded Goldreich;Dana Ron

  • Affiliations:
  • oded.goldreich@weizmann.ac.il;danar@eng.tau.ac.il

  • Venue:
  • SIAM Journal on Computing
  • Year:
  • 2011

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Abstract

We initiate a systematic study of a special type of property testers. These testers consist of repeating a basic test for a number of times that depends on the proximity parameter, whereas the basic test is oblivious of the proximity parameter. We refer to such basic tests by the term proximity-oblivious testers. While proximity-oblivious testers were studied before—most notably in the algebraic setting—the current study seems to be the first one to focus on graph properties. We provide a mix of positive and negative results, and in particular characterizations of the graph properties that have constant-query proximity-oblivious testers in the two standard models (i.e., the adjacency matrix and the bounded-degree models). Furthermore, we show that constant-query proximity-oblivious testers do not exist for many easily testable properties, and that even when proximity-oblivious testers exist, repeating them does not necessarily yield the best standard testers for the corresponding property.