TY - GEN
T1 - A tableau calculus for a nonmonotonic extension of ℰℒ ⊥
AU - Giordano, Laura
AU - Gliozzi, Valentina
AU - Olivetti, Nicola
AU - Pozzato, Gian Luca
PY - 2011
Y1 - 2011
N2 - We introduce a tableau calculus for a nonmonotonic extension of low complexity Description Logic ℰℒ⊥ that can be used to reason about typicality and defeasible properties. The calculus deals with Left Local knowledge bases in the logic ℰℒ⊥Tmin recently introduced in [8]. The calculus performs a two-phase computation to check whether a query is minimally entailed from the initial knowledge base. It is sound, complete and terminating. Furthermore, it is a decision procedure for Left Local ℰℒ⊥Tmin knowledge bases, whose complexity matches the known results for the logic, namely that entailment is in Π2p.
AB - We introduce a tableau calculus for a nonmonotonic extension of low complexity Description Logic ℰℒ⊥ that can be used to reason about typicality and defeasible properties. The calculus deals with Left Local knowledge bases in the logic ℰℒ⊥Tmin recently introduced in [8]. The calculus performs a two-phase computation to check whether a query is minimally entailed from the initial knowledge base. It is sound, complete and terminating. Furthermore, it is a decision procedure for Left Local ℰℒ⊥Tmin knowledge bases, whose complexity matches the known results for the logic, namely that entailment is in Π2p.
UR - http://www.scopus.com/inward/record.url?scp=79959687741&partnerID=8YFLogxK
U2 - 10.1007/978-3-642-22119-4_15
DO - 10.1007/978-3-642-22119-4_15
M3 - Conference contribution
AN - SCOPUS:79959687741
SN - 9783642221187
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 180
EP - 195
BT - Automated Reasoning with Analytic Tableaux and Related Methods - 20th International Conference, TABLEAUX 2011, Proceedings
T2 - 20th International Conference on Automated Reasoning with Analytic Tableaux and Related Methods, TABLEAUX 2011
Y2 - 4 July 2011 through 8 July 2011
ER -