SHYSTER-MYCIN: A Hybrid Legal Expert System

Proceedings of the Ninth International Conference on Artificial Intelligence and Law (ICAIL-03), June 2003

2 Pages Posted: 31 Jan 2009 Last revised: 24 Aug 2018

See all articles by Thomas A O'Callaghan

Thomas A O'Callaghan

affiliation not provided to SSRN

James Popple

Australian National University (ANU)

Eric McCreath

Australian National University (ANU)

Date Written: June 26, 2003

Abstract

SHYSTER-MYCIN combines a case-based legal expert system (SHYSTER) with a rule-based expert system (MYCIN) to form a hybrid legal expert system. MYCIN's reporting has been improved for use with SHYSTER-MYCIN to provide more useful information about the system's conclusions. SHYSTER-MYCIN's output was tested against that of a group of lawyers, not expert in the test domain (Australian copyright law). This allowed the system's reasoning, rather than its depth of knowledge, to be tested. Testing indicates that SHYSTER-MYCIN's approach to the law - using a rule-based system to reason with legislation and a case-based system to reason with cases - is appropriate.

Keywords: law, legal, expert systems, artificial intelligence, jurisprudence, legal reasoning, hybrid, evaluation, testing, MYCIN, SHYSTER

Suggested Citation

O'Callaghan, Thomas A and Popple, James and McCreath, Eric, SHYSTER-MYCIN: A Hybrid Legal Expert System (June 26, 2003). Proceedings of the Ninth International Conference on Artificial Intelligence and Law (ICAIL-03), June 2003, Available at SSRN: https://ssrn.com/abstract=1335659 or http://dx.doi.org/10.2139/ssrn.1335659

Thomas A O'Callaghan

affiliation not provided to SSRN

James Popple (Contact Author)

Australian National University (ANU)

Canberra, Australian Capital Territory 2601
Australia

Eric McCreath

Australian National University (ANU) ( email )

Australia

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