Inductive Synthesis of Logic Programs by Composition of Combinatory Program Schemes

  • Authors:
  • Andreas Hamfelt;Jørgen Fischer Nilsson

  • Affiliations:
  • -;-

  • Venue:
  • LOPSTR '98 Proceedings of the 8th International Workshop on Logic Programming Synthesis and Transformation
  • Year:
  • 1998

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Abstract

Based on a variable-free combinatory form of definite clause logic programs we outline a methodology and supporting program environment CombInduce for inducing well-moded logic programs from examples. The combinators comprise fold combinators for recursion on lists. The combinator form is distinguished by enabling piecewise composition of semantically meaningful program elements according to the compositional semantics principle. The principle of combining programs from combinators admits induction of programs without appealing to most-specific-generalization and predicate invention in contrast to prevailing ILP approaches. Moreover, the combinator form avoids confusing object and metavariables in the applied metalogic program environment. In addition useful algebraic rewriting rules can be formulated conveniently with the combinators.