Efficient SAT Encodings for Hierarchical Planning
Schreiber, Dominik
1; Pellier, Damien; Fiorino, Humbert; Balyo, Tomáš 1
1 Karlsruher Institut für Technologie (KIT)
1; Pellier, Damien; Fiorino, Humbert; Balyo, Tomáš 11 Karlsruher Institut für Technologie (KIT)
Abstract:
Hierarchical Task Networks (HTN) are one of the most expressive representations for automated planning
problems. On the other hand, in recent years, the performance of SAT solvers has been drastically improved.
To take advantage of these advances, we investigate how to encode HTN problems as SAT problems. In
this paper, we propose two new encodings: GCT (Grammar-Constrained Tasks) and SMS (Stack Machine
Simulation), which, contrary to previous encodings, address recursive task relationships in HTN problems. We
evaluate both encodings on benchmark domains from the International Planning Competition (IPC), setting a
new baseline in SAT planning on modern HTN domains.
problems. On the other hand, in recent years, the performance of SAT solvers has been drastically improved.
To take advantage of these advances, we investigate how to encode HTN problems as SAT problems. In
this paper, we propose two new encodings: GCT (Grammar-Constrained Tasks) and SMS (Stack Machine
Simulation), which, contrary to previous encodings, address recursive task relationships in HTN problems. We
evaluate both encodings on benchmark domains from the International Planning Competition (IPC), setting a
new baseline in SAT planning on modern HTN domains.
| Zugehörige Institution(en) am KIT | Institut für Theoretische Informatik (ITI) |
| Publikationstyp | Proceedingsbeitrag |
| Publikationsjahr | 2019 |
| Sprache | Englisch |
| Identifikator | ISBN: 978-989758350-6 KITopen-ID: 1000097221 |
| Erschienen in | Proceedings of the 11th International Conference on Agents and Artificial Intelligence (ICAART 2019), Prague, CZ, February 19-21, 2019. Ed.: J. van den Herik. Vol. 2 |
| Verlag | SciTePress |
| Seiten | 531–538 |
| Nachgewiesen in | Scopus Dimensions |