A Demonstration of a Semi-Structured Legal Reasoning Framework

Legal reasoning strikes a balance between structured elements (i.e. legal criteria and their connections) and unstructured elements (i.e. about of the applicability of open-textured legal terms). Expert systems perform well on the former task, while large language models offer significant potential in the latter style of reasoning. In this demonstration, we present the DALLMA framework, which enables the combination of these two approaches, for semi-structured reasoning. This approach has the potential to assist in many legal reasoning and drafting tasks, while reducing the risks of hallucinations, with important implications for e.g. access to justice.