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Framing a Knowledge Base for a Legal Expert System Dealing with Indeterminate Concepts
Michał Araszkiewicz1, Agata Łopatkiewicz2, Adam Zienkiewicz3
1Faculty of Law and Administration, Jagiellonian University, Gołębia 24, 31-007 Kraków, Poland.
Abstract:
Despite decades of development of formal tools for modelling legal knowledge and reasoning, the creation of a fully fledged legal decision support system remains challenging. Among those challenges, such system requires an enormous amount of commonsense knowledge to derive legal expertise. This paper describes the development of a negotiation decision support system (the Parenting Plan Support System or PPSS) to support parents in drafting an agreement (the parenting plan) for the exercise of parental custody of minor children after a divorce is granted. The main objective here is to discuss problems of framing an intuitively appealing and computationally efficient knowledge base that can adequately represent the indeterminate legal concept of the well-being of the child in the context of continental legal culture and of Polish law in particular. In addition to commonsense reasoning, interpretation of such a concept demands both legal expertise and significant professional knowledge from other domains.
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