Abstract. This paper has two foci that are intended to be complementary. First, it describes Conzilla as an incarnation of a concept browser. More specifically, as a technical sol...
Abstract. In recent years ontologies – shared conceptualizations of some domain – are increasingly seen as the key to further automation of information processing. Although man...
The paper introduces the notion of off-line justification for Answer Set Programming (ASP). Justifications provide a graph-based explanation of the truth value of an atom w.r.t. a ...
This paper describes GoNTogle, a framework for document annotation and retrieval, built on top of Semantic Web and IR technologies. GoNTogle supports ontology-based annotation for ...
We present Data Auditor, a tool for exploring data quality and data semantics. Given a rule or an integrity constraint and a target relation, Data Auditor computes pattern tableau...
Lukasz Golab, Howard J. Karloff, Flip Korn, Divesh...