Prolog-ELF incorporating fuzzy logic

Mitsuru Ishizuka*, Naoki Kanai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Prolog-ELF incorporating fuzzy logic and several useful functions into Prolog has been implemented as a basic language for building knowledge systems with uncertainty or fuzziness. Prolog-ELF inherits all the desirable basic features of Prolog. In addition to assertions with truth-values between 1.0 and 0.5 (0 for exceptional cases), fuzzy sets can be very easily manipulated. An application of fuzzy logical database is illustrated.

Original languageEnglish
Pages (from-to)479-486
Number of pages8
JournalNew Generation Computing
Issue number4
Publication statusPublished - 1985 Dec
Externally publishedYes


  • Extended Prolog
  • Fuzzy Logic
  • Fuzzy Logical
  • Fuzzy Set
  • Uncertainty

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Software
  • Hardware and Architecture
  • Computer Networks and Communications


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