Vorträge und Posterpräsentationen (mit Tagungsband-Eintrag):
M. Hecher, J. Fichte, M. Morak, S. Woltran:
"Answer Set Solving with Bounded Treewidth Revisited";
Vortrag: 14th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR 2017),
Helsinki, Finland;
03.07.2017
- 06.07.2017; in: "Proc. of the 14th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR 2017)",
M. Balduccini, T. Janhunen (Hrg.);
Springer,
(2017),
S. 132
- 145.
Kurzfassung englisch:
Parameterized algorithms are a way to solve hard problems more efficiently, given that a specific parameter of the input is small. In this paper, we apply this idea to the field of answer set programming (ASP). To this end, we propose two kinds of graph representations of programs to exploit their treewidth as a parameter. Treewidth roughly measures to which extent the internal structure of a program resembles a tree. Our main contribution is the design of parameterized dynamic programming algorithms, which run in linear time if the treewidth and weights of the given program are bounded. Compared to previous work, our algorithms handle the full syntax of ASP. Finally, we report on an empirical evaluation that shows good runtime behaviour for benchmark instances of low treewidth, especially for counting answer sets.
Schlagworte:
Answer;Set; Solving;Bounded; Treewidth; Revisited;
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1007/978-3-319-61660-5_13
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.