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  How to realize LSE narrowing

Werner, A., Bockmayr, A., & Krischer, S. (1998). How to realize LSE narrowing. New Generation Computing, 16(4), 397-434.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-383F-C Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-3840-6
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 Urheber:
Werner, Andreas, Autor
Bockmayr, Alexander1, Autor           
Krischer, Stefan, Autor
Affiliations:
1Programming Logics, MPI for Informatics, Max Planck Society, ou_40045              

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Schlagwörter: -
 Zusammenfassung: Narrowing is a complete unification procedure for equational theories defined by canonical term rewriting systems. It is also the operational semantics of various logic and functional programming languages. In an earlier paper, we introduced the LSE narrowing strategy which is complete for arbitrary canonical rewriting systems and optimal in the sense that two different LSE narrowing derivations cannot generate the same narrowing substitution. LSE narrowing improves all previously known strategies for the class of arbitrary canonical systems. LSE narrowing detects redundant derivations by reducibility tests. According to their definition, LSE narrowing steps seem to be very expensive, because a large number of subterms has to be tested. In this paper, we show that many of these subterms are identical. We describe how left-to-right basic occurrences can be used to identify and exclude these identical subterms. This way, we can drastically reduce the number of subterms that have to be tested. Based on these theoretical results, we develop an efficient implementation of LSE narrowing.

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Sprache(n): eng - English
 Datum: 2010-03-121998
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 519655
Anderer: Local-ID: C1256104005ECAFC-E58551BD48DDDA7BC125668E003266EE-WernerBockmayrKrischer98
 Art des Abschluß: -

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Titel: New Generation Computing
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: -
Seiten: - Band / Heft: 16 (4) Artikelnummer: - Start- / Endseite: 397 - 434 Identifikator: ISSN: 0288-3635