Abstract
It is known that the OWL 2RL Web Ontology Language Profile has PTime data complexity and can be translated into Datalog. However, the result of translation may consist of a Datalog program and a set of constraints in the form of negative clauses. Therefore, a knowledge base in OWL 2RL may be unsatisfiable. In the current paper we first identify a maximal fragment of OWL 2RL, called OWL 2RL + , with the property that every knowledge base expressed in OWL2RL + can be translated to a Datalog program and hence is satisfiable. We then propose some extensions of OWL 2RL and OWL 2RL + that still have PTime data complexity.
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References
Abiteboul, S., Hull, R., Vianu, V.: Foundations of Databases. Addison Wesley (1995)
Baader, F., Brandt, S., Lutz, C.: Pushing the EL envelope. In: Kaelbling, L.P., Saffiotti, A. (eds.) Proceedings of IJCAI 2005, pp. 364–369. Morgan-Kaufmann Publishers (2005)
Baader, F., Brandt, S., Lutz, C.: Pushing the EL envelope further. In: Proceedings of the OWLED 2008 DC Workshop on OWL: Experiences and Directions (2008)
Brandt, S.: Polynomial time reasoning in a description logic with existential restrictions, GCI axioms, and - what else? In: de Mántaras, R.L., Saitta, L. (eds.) Proceedings of ECAI 2004, pp. 298–302. IOS Press (2004)
Calvanese, D., De Giacomo, G., Lembo, D., Lenzerini, M., Rosati, R.: Tractable reasoning and efficient query answering in description logics: The DL-Lite family. J. Autom. Reasoning 39(3), 385–429 (2007)
Cao, S.T., Nguyen, L.A., Szałas, A.: On the Web ontology rule language OWL 2 RL. In: Jędrzejowicz, P., Nguyen, N.T., Hoang, K. (eds.) ICCCI 2011, Part I. LNCS, vol. 6922, pp. 254–264. Springer, Heidelberg (2011)
Cao, S.T., Nguyen, L.A., Szałas, A.: WORL: A Web ontology rule language. In: Proceedings of KSE 2011, pp. 32–39. IEEE (2011)
Cao, S.T., Nguyen, L.A., Szałas, A.: WORL: a Nonmonotonic Rule Language for the Semantic Web. Vietnam Journal of Computer Science 1 (2013)
Donini, F.M., Lenzerini, M., Nardi, D., Schaerf, A.: AL-log: Integrating Datalog and description logics. J. Intell. Inf. Syst. 10(3), 227–252 (1998)
Drabent, W., Małuszyński, J.: Well-founded semantics for hybrid rules. In: Marchiori, M., Pan, J.Z., de Sainte Marie, C. (eds.) RR 2007. LNCS, vol. 4524, pp. 1–15. Springer, Heidelberg (2007)
Dunin-Kęplicz, B., Nguyen, L.A., Szałas, A.: A layered rule-based architecture for approximate knowledge fusion. Computer Science and Information Systems 7(3), 617–642 (2010)
Dunin-Kęplicz, B., Nguyen, L.A., Szałas, A.: Tractable approximate knowledge fusion using the Horn fragment of serial propositional dynamic logic. Int. J. Approx. Reasoning 51(3) (2010)
Dunin-Kęplicz, B., Nguyen, L.A., Szałas, A.: Horn-TeamLog: A Horn fragment of TeamLog with PTime data complexity. In: Bǎdicǎ, C., Nguyen, N.T., Brezovan, M. (eds.) ICCCI 2013. LNCS, vol. 8083, pp. 143–153. Springer, Heidelberg (2013)
Eiter, T., Ianni, G., Lukasiewicz, T., Schindlauer, R.: Well-founded semantics for description logic programs in the Semantic Web. ACM Trans. Comput. Log. 12(2), 11 (2011)
Elenius, D.: SWRL-IQ: A prolog-based query tool for OWL and SWRL. In: Proceedings of OWL ED Workshop (2012)
Motik, B., et al. (eds), Horrocks, I., et al. (contributors): OWL 2 Web Ontology Language Direct Semantics (2009), http://www.w3.org/TR/2009/REC-owl2-direct-semantics-20091027
Grosof, B.N., Horrocks, I., Volz, R., Decker, S.: Description logic programs: combining logic programs with description logic. In: Proceedings of WWW 2003, pp. 48–57 (2003)
Heymans, S., Eiter, T., Xiao, G.: Tractable reasoning with DL-programs over Datalog-rewritable description logics. In: Coelho, H., Studer, R., Wooldridge, M. (eds.) Proceedings of ECAI 2010, pp. 35–40. IOS Press (2010)
Horrocks, I., Kutz, O., Sattler, U.: The even more irresistible SROIQ. In: Doherty, P., Mylopoulos, J., Welty, C.A. (eds.) Proceedings of KR 2006, pp. 57–67. AAAI Press (2006)
Horrocks, I., Patel-Schneider, P.F., Bechhofer, S., Tsarkov, D.: OWL rules: A proposal and prototype implementation. J. Web Sem. 3(1), 23–40 (2005)
Hustadt, U., Motik, B., Sattler, U.: Reasoning in description logics by a reduction to disjunctive Datalog. J. Autom. Reasoning 39(3), 351–384 (2007)
Knorr, M., Alferes, J.J., Hitzler, P.: A coherent well-founded model for hybrid MKNF knowledge bases. In: Proceedings of ECAI 2008. Frontiers in Artificial Intelligence and Applications, vol. 178, pp. 99–103. IOS Press (2008)
Krisnadhi, A., Lutz, C.: Data complexity in the EL family of description logics. In: Dershowitz, N., Voronkov, A. (eds.) LPAR 2007. LNCS (LNAI), vol. 4790, pp. 333–347. Springer, Heidelberg (2007)
Krötzsch, M., Rudolph, S., Hitzler, P.: Complexity boundaries for Horn description logics. In: Proceedings of AAAI 2007, pp. 452–457. AAAI Press (2007)
Krötzsch, M., Rudolph, S., Hitzler, P.: Conjunctive queries for a tractable fragment of OWL 1.1. In: Aberer, K., Choi, K.-S., Noy, N., Allemang, D., Lee, K.-I., Nixon, L.J.B., Golbeck, J., Mika, P., Maynard, D., Mizoguchi, R., Schreiber, G., Cudré-Mauroux, P. (eds.) ASWC 2007 and ISWC 2007. LNCS, vol. 4825, pp. 310–323. Springer, Heidelberg (2007)
Levy, A.Y., Rousset, M.-C.: Combining Horn rules and description logics in CARIN. Artificial Intelligence 104(1-2), 165–209 (1998)
Madalińska-Bugaj, E., Nguyen, L.A.: A generalized QSQR evaluation method for Horn knowledge bases. ACM Trans. Comput. Log. 13(4), 32 (2012)
Motik, B., Rosati, R.: Reconciling description logics and rules. J. ACM 57(5) (2010)
Motik, B., Sattler, U., Studer, R.: Query answering for OWL-DL with rules. J. Web Sem. 3(1), 41–60 (2005)
Nguyen, L.A.: On the deterministic Horn fragment of test-free PDL. In: Hodkinson, I., Venema, Y. (eds.) Advances in Modal Logic, vol. 6, pp. 373–392. King’s College Publications (2006)
Nguyen, L.A.: Constructing finite least Kripke models for positive logic programs in serial regular grammar logics. Logic Journal of the IGPL 16(2), 175–193 (2008)
Nguyen, L.A.: Extending the description Horn logic DHL. In: Czaja, L., Szczuka, M. (eds.) Proceedings of CS&P 2009, pp. 419–430 (2009)
Nguyen, L.A.: Horn knowledge bases in regular description logics with PTime data complexity. Fundamenta Informaticae 104(4), 349–384 (2010)
Nguyen, L.A., Cao, S.T.: Query-subquery nets. In: Nguyen, N.-T., Hoang, K., Jędrzejowicz, P. (eds.) ICCCI 2012, Part I. LNCS, vol. 7653, pp. 239–248. Springer, Heidelberg (2012)
Nguyen, L.A., Nguyen, T.-B.-L., Szałas, A.: Horn-DL: An expressive Horn description logic with PTime data complexity. In: Faber, W., Lembo, D. (eds.) RR 2013. LNCS, vol. 7994, pp. 259–264. Springer, Heidelberg (2013)
Nguyen, L.A., Nguyen, T.-B.-L., Szałas, A.: On Horn knowledge bases in regular description logic with inverse. In: Huynh, V.N., Denoeux, T., Tran, D.H., Le, A.C., Pham, B.S. (eds.) KSE 2013, Part I. AISC, vol. 244, pp. 37–50. Springer, Heidelberg (2014)
Nguyen, L.A., Szałas, A.: On the Horn fragments of serial regular grammar logics with converse. In: Proceedings of KES-AMSTA 2013. Frontiers in Artificial Intelligence and Applications, vol. 252, pp. 225–234. IOS Press (2013)
Ortiz, M., Rudolph, S., Simkus, M.: Query answering in the Horn fragments of the description logics SHOIQ and SROIQ. In: Walsh, T. (ed.) Proceedings of IJCAI 2011, pp. 1039–1044 (2011)
In: Motik, B., et al. (ed.), Calvanese, D., et al. (contributors): OWL 2 Web Ontology Language Profiles (2009), http://www.w3.org/TR/owl2-profiles/#OWL_2_RL http://www.w3.org/TR/owl2-profiles
Rosati, R.: On conjunctive query answering in \(\mathcal{EL}\). In: Proceedings of DL 2007, pp. 451–458 (2007)
Rosati, R.: DL+log: Tight integration of description logics and disjunctive Datalog. In: Proceedings of KR 2006, pp. 68–78. AAAI Press (2006)
ter Horst, H.J.: Completeness, decidability and complexity of entailment for RDF Schema and a semantic extension involving the OWL vocabulary. J. Web Sem. 3(2-3), 79–115 (2005)
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Cao, S.T., Nguyen, L.A., Szałas, A. (2014). The Web Ontology Rule Language OWL 2 RL + and Its Extensions. In: Nguyen, NT., Le-Thi, H.A. (eds) Transactions on Computational Intelligence XIII. Lecture Notes in Computer Science, vol 8342. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-54455-2_7
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DOI: https://doi.org/10.1007/978-3-642-54455-2_7
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