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Property testing algorithms are ultra-efficient algorithms that decide whether a given object (e.g., a graph) has a certain property (e.g., bipartiteness), or is significantly different from any object that has the property. To this end property testing algorithms are given the ability to perform (local) queries to the input, though the decisions they need to make usually concern properties with a global nature.
In the last two decades, property testing algorithms have been designed for many types of objects and properties, amongst them, graph properties, algebraic properties, geometric properties, and more. In this book the authors survey results in property testing, with an emphasis on common analysis and algorithmic techniques. Among the techniques surveyed are the following:
a) The self-correcting approach, which was mainly applied in the study of property testing of algebraic properties. b) The enforce and test approach, which was applied quite extensively in the analysis of algorithms for testing graph properties (in the dense-graphs model), as well as in other contexts. c) Szemeredi’s Regularity Lemma, which plays a very important role in the analysis of algorithms for testing graph properties (in the dense-graphs model). d) The approach of Testing by implicit learning, which implies efficient testability of membership in many functions classes. e) Algorithmic techniques for testing properties of sparse graphs, which include local search and random walks.
