An Automated System for Argument Invention in Law Using Argumentation and Heuristic Search Procedures*

Abstract. A heuristic search procedure for inventing legal arguments is built on two tools already widely in use in argumentation. Argumentation schemes are forms of argument representing premise-conclusion and inference structures of common types of arguments. Schemes especially useful in law represent defeasible argu-ments, like argument from expert opinion. Argument diagramming is a visualiza-tion tool used to display a chain of connected arguments linked together. One such tool, Araucaria, available free a