Polynomial-Time Under-Approximation of Winning Regions in Parity Games

  title={Polynomial-Time Under-Approximation of Winning Regions in Parity Games},
  author={Adam Antonik and Nathaniel Charlton and Michael Huth},
  journal={Electr. Notes Theor. Comput. Sci.},
We propose a pattern for designing algorithms that run in polynomial time by construction and underapproximate the winning regions of both players in parity games. This approximation is achieved by the interaction of finitely many aspects governed by a common ranking function, where the choice of aspects and ranking function instantiates the design pattern. Each aspect attempts to improve the under-approximation of winning regions or decrease the rank function by simplifying the structure of… CONTINUE READING
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