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Polynomial time inference of a subclass of context-free transformations

Published: 01 July 1992 Publication History

Abstract

This paper deals with a class of Prolog programs, called context-free term transformations (CTF). We present a polynomial time algorithm to identify a subclass of CFT, whose program consists of at most two clauses, from positive data; The algorithm uses 2-mmg (2-minimal multiple generalization) algorithm, which is natural extension of Plotkin's least generalization algorithm, to reconstruct the pair of heads of the unknown program. Using this algorithm, we show the consistent and conservative polynomial time identifiability of the class of tree languages defined by CFTFBuniq together with tree languages defined by pairs of two tree patterns, both of which are proper subclasses of CFT, in the limit from positive data.

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  1. Polynomial time inference of a subclass of context-free transformations

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      cover image ACM Conferences
      COLT '92: Proceedings of the fifth annual workshop on Computational learning theory
      July 1992
      452 pages
      ISBN:089791497X
      DOI:10.1145/130385
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      Published: 01 July 1992

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      COLT92: 5th Annual Workshop on Computational Learning Theory
      July 27 - 29, 1992
      Pennsylvania, Pittsburgh, USA

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      • (2005)Efficient inductive inference of primitive Prologs from positive dataAlgorithmic Learning Theory10.1007/3-540-57369-0_34(135-146)Online publication date: 31-May-2005
      • (2000)Inductive inference of unbounded unions of pattern languages from positive dataTheoretical Computer Science10.1016/S0304-3975(99)00270-4241:1-2(191-209)Online publication date: 28-Jun-2000
      • (1999)Learning Logic Programs with Local Variables from Positive ExamplesAdvanced Topics in Artificial Intelligence10.1007/3-540-46695-9_41(469-471)Online publication date: 1999
      • (1995)Polynomial learnability and Inductive Logic Programming: Methods and resultsNew Generation Computing10.1007/BF0303723113:3-4(369-409)Online publication date: Dec-1995
      • (1993)Learnability in inductive logic programmingProceedings of the eleventh national conference on Artificial intelligence10.5555/1867270.1867285(93-98)Online publication date: 11-Jul-1993

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