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I am interested in user interfaces that represent legal argumentation and/or logical reasoning. For professionals dealing with complex reasoning and argumentation that is mainly language-based, what tools are they using to formalize, manage and archive their documents?

I am most interested in browser-based, e.g. viewers of XML-based representations, but stand-alone applications would be fascinating too. The types of markup languages that I'm interested in seeing viewers of include: Legal XML, RuleML, and some instances of OWL and RDF.

What is out there?

  • Are you making the assumption that the legal arguments are a synonym for logical arguments? ;) On a more serious note, are you asking about more mind-mapping type concepts, or things like ways to read court opinions or rules and other formally structured legal documents (or something else entirely?) – DA01 Dec 7 '11 at 5:26
  • Do you know of any examples yourself? That will help us understand what you mean. Can you post links or examples of any of the XML-based representations? – Patrick McElhaney Dec 7 '11 at 14:32
  • @PatrickMcElhaney I just tried to post one example I have found so far, but I wasn't allowed to post the screenshot as a new user. I'll update the question with a bit more info as my research unfolds. – ted.strauss Dec 7 '11 at 19:47
  • @DA01 i'm interested in any of the categories you mentioned, but unlike a mind-mapping tool or formal ontology (which describe static concepts and their relations), I'm more interested in formally-structured documents that include rules, arguments, proofs, inferences, etc. I know it's a tall order, but hey, that's what this site is for. – ted.strauss Dec 7 '11 at 19:59
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I have found a system called DR-Prolog that does logical proofs using a custom XML format for representing content. The visualization uses straight-forward box and arrow diagrams. The type of logic that it was designed for is called Defeasible reasoning.
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I found the article 'Visualizing a Logic of Dependability Arguments' which deals with the topic of the question. Other articles from the conference may be of interest as well.

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