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On the Complexity of Propositional Knowledge Base Revision, Updates, and Counterfactuals.

Thomas Eiter, Georg Gottlob: On the Complexity of Propositional Knowledge Base Revision, Updates, and Counterfactuals. PODS 1992: 261-273
@inproceedings{DBLP:conf/pods/EiterG92,
  author    = {Thomas Eiter and
               Georg Gottlob},
  title     = {On the Complexity of Propositional Knowledge Base Revision, Updates,
               and Counterfactuals},
  booktitle = {Proceedings of the Eleventh ACM SIGACT-SIGMOD-SIGART Symposium
               on Principles of Database Systems, June 2-4, 1992, San Diego,
               California},
  publisher = {ACM Press},
  year      = {1992},
  isbn      = {0-89791-519-4},
  pages     = {261-273},
  ee        = {http://doi.acm.org/10.1145/137097.137886, db/conf/pods/EiterG92.html},
  crossref  = {DBLP:conf/pods/92},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}
BibTeX

Abstract

We study the complexity of several recently proposed methods for updating or revising propositional knowledge bases. In particular, we derive complexity results for the following problem: given a knowledge base T, an update p, and a formula q, decide whether q is derivable from Top, the updated (or revised) knowledge base. This problem amounts to evaluating the counterfactual p > q over T. Besides the general case, also subcases are considered, in particular where T is a conjunction of Horn clauses, or where the size of p is bounded by a constant.

Copyright © 1992 by the ACM, Inc., used by permission. Permission to make digital or hard copies is granted provided that copies are not made or distributed for profit or direct commercial advantage, and that copies show this notice on the first page or initial screen of a display along with the full citation.


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Printed Edition

Proceedings of the Eleventh ACM SIGACT-SIGMOD-SIGART Symposium on Principles of Database Systems, June 2-4, 1992, San Diego, California. ACM Press 1992, ISBN 0-89791-519-4
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Journal Edition

Thomas Eiter, Georg Gottlob: On the Complexity of Propositional Knowledge Base Revision, Updates, and Counterfactuals. Artif. Intell. 57(2-3): 227-270(1992) BibTeX

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Referenced by

  1. V. Wiktor Marek, Miroslaw Truszczynski: Revision Programming, Database Updates and Integrity Constraints. ICDT 1995: 368-382
  2. Suryanarayana M. Sripada, Beat Wüthrich: Cumulative Updates. VLDB 1994: 534-545
  3. Alberto O. Mendelzon, Tova Milo, Emmanuel Waller: Object Migration. PODS 1994: 232-242
  4. Peter Z. Revesz: On the Semantics of Theory Change: Arbitration between Old and New Information. PODS 1993: 71-82
  5. Gösta Grahne, Alberto O. Mendelzon, Peter Z. Revesz: Knowledgebase Transformations. PODS 1992: 246-260
BibTeX
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