A recursive approach to solving parity games in quasipolynomial time
Zielonka's classic recursive algorithm for solving parity games is perhaps the simplest
among the many existing parity game algorithms. However, its complexity is exponential …
among the many existing parity game algorithms. However, its complexity is exponential …
Parity games: Zielonka's algorithm in quasi-polynomial time
P Parys - arXiv preprint arXiv:1904.12446, 2019 - arxiv.org
Calude, Jain, Khoussainov, Li, and Stephan (2017) proposed a quasi-polynomial-time
algorithm solving parity games. After this breakthrough result, a few other quasi-polynomial …
algorithm solving parity games. After this breakthrough result, a few other quasi-polynomial …
Good for games automata: From nondeterminism to alternation
U Boker, K Lehtinen - arXiv preprint arXiv:1906.11624, 2019 - arxiv.org
A word automaton recognizing a language $ L $ is good for games (GFG) if its composition
with any game with winning condition $ L $ preserves the game's winner. While all …
with any game with winning condition $ L $ preserves the game's winner. While all …
Universal graphs and good for games automata: New tools for infinite duration games
T Colcombet, N Fijalkow - … Conference, FOSSACS 2019, Held as Part of …, 2019 - Springer
In this paper, we give a self contained presentation of a recent breakthrough in the theory of
infinite duration games: the existence of a quasipolynomial time algorithm for solving parity …
infinite duration games: the existence of a quasipolynomial time algorithm for solving parity …
Smaller progress measures and separating automata for parity games
D Dell'Erba, S Schewe - Frontiers in Computer Science, 2022 - frontiersin.org
Calude et al. have recently shown that parity games can be solved in quasi-polynomial time,
a landmark result that has led to several approaches with quasi-polynomial complexity …
a landmark result that has led to several approaches with quasi-polynomial complexity …
Rabin games and colourful universal trees
We provide an algorithm to solve Rabin and Streett games over graphs with n vertices, m
edges, and k colours that runs in O~ mn (k!) 1+ o (1) time and O (nk log k log n) space …
edges, and k colours that runs in O~ mn (k!) 1+ o (1) time and O (nk log k log n) space …
[PDF][PDF] The theory of universal graphs for infinite duration games
T Colcombet, N Fijalkow… - Logical Methods in …, 2022 - lmcs.episciences.org
We introduce the notion of universal graphs as a tool for constructing algorithms solving
games of infinite duration such as parity games and mean payoff games. In the first part we …
games of infinite duration such as parity games and mean payoff games. In the first part we …
A compositional approach to parity games
In this paper, we introduce open parity games, which is a compositional approach to parity
games. This is achieved by adding open ends to the usual notion of parity games. We …
games. This is achieved by adding open ends to the usual notion of parity games. We …
The Strahler number of a parity game
The Strahler number of a rooted tree is the largest height of a perfect binary tree that is its
minor. The Strahler number of a parity game is proposed to be defined as the smallest …
minor. The Strahler number of a parity game is proposed to be defined as the smallest …
[PDF][PDF] A quasi-polynomial black-box algorithm for fixed point evaluation
A Arnold, D Niwiński, P Parys - 29th EACSL Annual Conference …, 2021 - drops.dagstuhl.de
We consider nested fixed-point expressions like μ z. ν y. μ x. f (x, y, z) evaluated over a finite
lattice, and ask how many queries to a function f are needed to find the value. The previous …
lattice, and ask how many queries to a function f are needed to find the value. The previous …