A novel SAT-based approach to model based diagnosis

Amit Metodi, Roni Stern, Meir Kalech, Michael Codish

Research output: Contribution to journalArticlepeer-review

58 Scopus citations


This paper introduces a novel encoding of Model Based Diagnosis (MBD) to Boolean Satisfaction (SAT) focusing on minimal cardinality diagnosis. The encoding is based on a combination of sophisticated MBD preprocessing algorithms and the application of a SAT compiler which optimizes the encoding to provide more succinct CNF representations than obtained with previous works. Experimental evidence indicates that our approach is superior to all published algorithms for minimal cardinality MBD. In particular, we can determine, for the first time, minimal cardinality diagnoses for the entire standard ISCAS-85 and 74XXX benchmarks. Our results open the way to improve the state-of-the-art on a range of similar MBD problems.

Original languageEnglish
Pages (from-to)377-411
Number of pages35
JournalJournal of Artificial Intelligence Research
StatePublished - 14 Oct 2014
Externally publishedYes

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