[Club2] Aktualisierte Einladung: SMT-based AI planning - Mi 21. Okt. 2020 14:00 - 14:20 (MESZ) (club2 at mailbroy.informatik.tu-muenchen.de)
piller at in.tum.de
piller at in.tum.de
Tue Oct 20 10:28:11 CEST 2020
Dieser Termin wurde geändert.
Titel: SMT-based AI planning
Speaker: Malek Souissi
Type: Bachelor's Thesis Presentation
Abstract: A successful technique for AI planning, introduced by Henry
Kautz and Bart Selman in [KS92], is based on propositional satisfiability
(SAT). The main idea lies in encoding a planning problem into a
propositional formula that is satisfiable iff a plan exists for the given
problem. A plan can then be extracted from the satisfying model. In some
cases, it is of higher interest to find the optimal plan for a given
problem (i.e. a plan with the lowest possible cost). Our aim is to adapt
the SAT-based planning approach to solve the optimal planning problem by
introducing action costs in an SMT-encoding of the problem. However, one
crucial requirement for the completeness and efficiency of this approach is
the completeness threshold. That is a bound k, such that, if no plan exists
of length less or equal to k, then no plan exists for the corresponding
problem (with a cost bound in case of optimal planning).
In this thesis we first port existing code for computing upper bounds on
the diameter from c++ to sml. We then improve upon the existing algorithms
and experiment with different approaches and configurations. In the second
part of the thesis, we introduce an any-time algorithm for optimal planning
which iteratively finds plans with lower costs until an optimal plan is
found or a timelimit is reached. In this part, we experiment with different
SMT-encodings and also SMT-solvers. We then try out some techniques that
potentially reduce the time needed to prove optimality by relaxing the
problem and assess the difference in performance.
Wann: Mi 21. Okt. 2020 14:00 – 14:20 Mitteleuropäische Zeit - Berlin
Wo: https://bbb.rbg.tum.de/kev-tnx-73 (geändert)
Teilnahmeinformationen: Teilnehmen mit: Google Meet
https://meet.google.com/jci-yqqc-doe
Kalender: club2 at mailbroy.informatik.tu-muenchen.de
Wer
* piller at in.tum.de- Veranstalter
* ge72yet at mytum.de
* club2 at mailbroy.informatik.tu-muenchen.de
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