Unfold fold transformation of stratified programs:

Abstract: "This paper describes some extensions of Tamaki-Sato's [16] unfold/fold transformation of definite programs. We first propose unfold/fold rules also preserving the finite failure set (by SLD-resolution) of a definite program, which the original rules proposed by Tamaki and Sato d...

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Bibliographic Details
Main Author: Seki, Hirohisa (Author)
Format: Book
Language:English
Published: Tokyo, Japan 1990
Series:Shin-Sedai-Konpyūta-Gijutsu-Kaihatsu-Kikō <Tōkyō>: ICOT technical report 536
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Summary:Abstract: "This paper describes some extensions of Tamaki-Sato's [16] unfold/fold transformation of definite programs. We first propose unfold/fold rules also preserving the finite failure set (by SLD-resolution) of a definite program, which the original rules proposed by Tamaki and Sato do not. Then, we show that our unfold/fold rules can be extended to rules for stratified programs, and prove that both the success set and the finite failure set (by SLDNF-resolution) of a stratified program are preserved. Preservation of equivalence of the perfect semantics [12] is also discussed."
Physical Description:33 S.

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