An Intelligent Interface to Legal Data Bases Combining Logic Programming and Hypertext

  • Andreas Hamfelt
  • Jonas Barklund


We propose an architecture for building expert systems in which the main subsystems are distinct but communicating programs: a Prolog inference engine, a multimedia interface tool and a data base management system. We have used this architecture for constructing a legal expert system for labour law.

We propose a novel approach for capturing vague concepts. The vagueness is not represented in the sense that its extent is quantified but instead rules are given for evaluating the concept in a given situation. The method is analogous to legal practice; lawyers develop methods for judging whether vague concepts apply to fact situations. These methods are used for identifying the relevant sub-questions and legal text documents for analyzing the case in issue. Our system reflects this and other aspects of a lawyer’s practical work.


Expert System Logic Programming Text Document Legal Reasoning Computer Reasoning 


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Copyright information

© Springer-Verlag/Wien 1990

Authors and Affiliations

  • Andreas Hamfelt
    • 1
  • Jonas Barklund
    • 1
  1. 1.UPMAIL, Computing Science Dept.Uppsala UniversityUppsalaSweden

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