Please use this identifier to cite or link to this item:
doi:10.22028/D291-24990
Title: | On the expressivity of feature logics with negation, functional uncertainty, and sort equations |
Author(s): | Baader, Franz Bürckert, Hans-Jürgen Nebel, Bernhard Nutt, Werner Smolka, Gert |
Language: | English |
Year of Publication: | 1991 |
OPUS Source: | Kaiserslautern ; Saarbrücken : DFKI, 1991 |
SWD key words: | Künstliche Intelligenz |
DDC notations: | 004 Computer science, internet |
Publikation type: | Report |
Abstract: | Feature logics are the logical basis for so-called unification grammars studied in computational linguistics. We investigate the expressivity of feature terms with complements and the functional uncertainty construct needed for the description of long-distance dependencies and obtain the following results: satisfiability of feature terms is undecidable, sort equations can be internalized, consistency of sort equations is decidable if there is at least one atom, and consistency of sort equations is undecidable if there is no atom. |
Link to this record: | urn:nbn:de:bsz:291-scidok-37959 hdl:20.500.11880/25046 http://dx.doi.org/10.22028/D291-24990 |
Series name: | Research report / Deutsches Forschungszentrum für Künstliche Intelligenz [ISSN 0946-008x] |
Series volume: | 91-01 |
Date of registration: | 1-Jul-2011 |
Faculty: | SE - Sonstige Einrichtungen |
Department: | SE - DFKI Deutsches Forschungszentrum für Künstliche Intelligenz |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Files for this record:
File | Description | Size | Format | |
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RR_91_01.pdf | 9,99 MB | Adobe PDF | View/Open |
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