Please use this identifier to cite or link to this item:
doi:10.22028/D291-24863
Title: | Plan modifications versus plan generation : a complexity-theoretic perspective |
Author(s): | Nebel, Bernhard Koehler, Jana |
Language: | English |
Year of Publication: | 1992 |
OPUS Source: | Kaiserslautern ; Saarbrücken : DFKI, 1992 |
SWD key words: | Künstliche Intelligenz Automatische Handlungsplanung |
DDC notations: | 004 Computer science, internet |
Publikation type: | Report |
Abstract: | The ability of a planner to modify a plan is considered as a valuable tool for improving efficiency of planning by avoiding the repetition of the same planning effort. From a computational complexity point of view, however, it is by no means obvious that modifying a plan is computationally as easy as planning from scratch if the modification has to follow the principle of "conservatism", i.e., to reuse as much of the old plan as possible. Indeed, considering propositional STRIPS planning, it turns out that conservative plan modification is as hard as planning and can sometimes be harder than plan generation. Furthermore, this holds even if we consider modification problems where the old and the new goal specification are similar. We put these results into perspective and discuss the relationship to existing plan modification systems. Although sometimes claimed otherwise, these systems do not address the modification problem, but use a non-conservative form of plan modification as a heuristic technique. |
Link to this record: | urn:nbn:de:bsz:291-scidok-36163 hdl:20.500.11880/24919 http://dx.doi.org/10.22028/D291-24863 |
Series name: | Research report / Deutsches Forschungszentrum für Künstliche Intelligenz [ISSN 0946-008x] |
Series volume: | 92-48 |
Date of registration: | 21-Jun-2011 |
Faculty: | SE - Sonstige Einrichtungen |
Department: | SE - DFKI Deutsches Forschungszentrum für Künstliche Intelligenz |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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File | Description | Size | Format | |
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RR_92_48.pdf | 10,86 MB | Adobe PDF | View/Open |
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