---
title: "Prolog-ELF Incorporating Fuzzy Logic"
authors:
  - "Mitsuru Ishizuka"
  - "Naoki Kanai"
doi: ""
url: "https://ijcai.org/proceedings/1985/136"
pdf: "https://ijcai.org/proceedings/1985/0136.pdf"
venue: "Proceedings of the Ninth International Joint Conference on Artificial Intelligence"
year: 1985
pages: "701-702"
track: "Logic Programming"
keywords:
---

# Prolog-ELF Incorporating Fuzzy Logic

Mitsuru Ishizuka, Naoki Kanai

*Proceedings of the Ninth International Joint Conference on Artificial Intelligence*, pages 701-702.

## Abstract

Prolog-ELF incorporating fuzzy logic and some use~ul functions into Prolog has been implemented as a bas1c ~anguage for building know legde systems wi th uncerta1nty or fuzziness . Prolog- ELF inherits all the preferable ~ic features of Prolog . In addition to assers1ons w1th a truth - value between 1.0 and 0.5 (0 for an except1onal case ) , fuzzy sets can be manipulated very eas1ly to a certain extent . An application to a fuzzy logical database is illustrated.