An implementation of propositional plausible logic

We report the first complete implementation of propositional plausible logic. Plausible logic is an extension of defeasible logic that overcomes the latter's inability to represent or prove disjunctions. This advantage is significant in dealing with practical applications such as the modeling of regulations. The system has a Web interface, which makes it available to researchers and students everywhere. The implementation language chosen was Haskell and some advantages and consequences of this choice are discussed.