New Polynomial Classes for Logic-Based Abduction

We address the problem of propositional logic-based abduction, i.e., the problem of searching for a best explanation for a given propositional observation according to a given propositional knowledge base. We give a general algorithm, based on the notion of projection; then we study restrictions over the representations of the knowledge base and of the query, and find new polynomial classes of abduction problems. We also show that our algorithm unifies several previous results.1

• Type: Journal
• Year: 2011
• Where: CORR
• Authors: Bruno Zanuttini
• Keywords: CORR 2011, Education, Knowledge Base, Propositional Knowledge Base, Propositional Logic-based Abduction