Endomorphisms of Lifted Planning Problems
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00350206" target="_blank" >RIV/68407700:21230/21:00350206 - isvavai.cz</a>
Result on the web
<a href="https://ojs.aaai.org/index.php/ICAPS/article/view/15960" target="_blank" >https://ojs.aaai.org/index.php/ICAPS/article/view/15960</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Endomorphisms of Lifted Planning Problems
Original language description
Classical planning tasks are usually modeled in the PDDL which is a schematic language based on first-order logic. Nevertheless, most of the current planners turn this first-order representation into a propositional one via the grounding process. It is well known that the grounding process may cause an exponential blowup. Therefore it is important to detect which grounded atoms are redundant in a sense that they are not necessary for finding a plan and therefore the grounding process does not need to generate them. This is usually done by a relaxed reachability analysis, which can be improved by employing structural symmetries. Symmetries are bijective self-maps preserving the structure of the PDDL task. In this paper, we introduce a new method which is based on self-maps preserving the structure but which need not be bijective. We call these maps PDDL endomorphisms and we show that they can be used for pruning of redundant objects even if they appear in a reachable atom. We formulate the computation of endomorphisms as a constraint satisfaction problem (CSP) that can be solved by an off-the-shelf CSP solver.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
10201 - Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the Thirty-First International Conference on Automated Planning and Scheduling
ISBN
978-1-7138-3231-7
ISSN
2334-0835
e-ISSN
2334-0843
Number of pages
10
Pages from-to
174-183
Publisher name
AAAI Press
Place of publication
Menlo Park
Event location
virtuální konference
Event date
Aug 2, 2021
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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