Title
A Relevance-Directed Algorithm for Finding Justifications of DL Entailments
Abstract
Finding the justifications of an entailment, i.e. minimal sets of axioms responsible for the entailment, is an important problem in ontology engineering and thus has become a key reasoning task for Description Logic-based ontologies. Although practical techniques to find all possible justifications exist, efficiency is still a problem. Furthermore, in the worst case the number of justifications for a subsumption entailment is exponential in the size of the ontology. Therefore, it is not always desirable to compute all justifications. In this paper, we propose a novel black-box algorithm that iteratively constructs a set of justifications of an entailment using a relevance-based selection function. Each justification returned by our algorithm is attached with a weight denoting its relevance degree w.r.t. the entailment. Finally, we implement the algorithm and present evaluation results over real-life ontologies that show the benefits of the selection function.
Year
DOI
Venue
2009
10.1007/978-3-642-10871-6_21
ASWC
Keywords
Field
DocType
ontology engineering,important problem,subsumption entailment,real-life ontology,novel black-box algorithm,dl entailments,description logic-based ontology,selection function,relevance-based selection function,relevance-directed algorithm,key reasoning task,iteratively construct,description logic
Ontology (information science),Ontology engineering,Data mining,Ontology,Logical consequence,Computer science,Axiom,Description logic,Algorithm,Preferential entailment
Conference
Volume
Issue
ISSN
5926
null
0302-9743
Citations 
PageRank 
References 
12
0.56
15
Authors
3
Name
Order
Citations
PageRank
Qiu Ji11365.76
Guilin Qi296188.58
Peter Haase31727114.59