Abstract
Fuzzy description logics (FDLs) have been introduced to represent concepts for which membership cannot be determined in a precise way, i.e., where instead of providing a strict border between being a member and not being a member, it is more appropriate to model a gradual change from membership to non-membership. First approaches for reasoning in FDLs where based either on a reduction to reasoning in classical description logics (DLs) or on adaptations of reasoning approaches for DLs to the fuzzy case. However, it turned out that these approaches in general do not work if expressive terminological axioms, called general concept inclusions (GCIs), are available in the FDL. The goal of this project was a comprehensive study of the border between decidability and undecidability for FDLs with GCIs, as well as determining the exact complexity of the decidable logics. As a result, we have provided an almost complete classification of the decidability and complexity of FDLs with GCIs.
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Baader F (1996) Using automata theory for characterizing the semantics of terminological cycles. Ann Math Artif Intell 18(2):175–219
Baader F, Borgwardt S, Peñaloza R (2015) On the decidability status of fuzzy ALC with general concept inclusions. J Philos Logic 44(2):117–146
Baader F, Brandt S, Lutz C (2005) Pushing the EL envelope. In L. P. Kaelbling and A. Saffiotti, editors, Int. Joint Conf. on Artif. Intell. (IJCAI), pp 364–369. Professional Book Center
Baader F, Calvanese D, McGuinness DL, Nardi D, Patel-Schneider PF (2007) The description logic handbook: theory, implementation, and applications. Cambridge University Press, 2nd edn
Baader F, Hladik J, Peñaloza R (2008) Automata can show PSPACE results for description logics. Inf Comput 206(9–10):1045–1056
Baader F, Peñaloza R (2011) Are fuzzy description logics with general concept inclusion axioms decidable? In IEEE Int. Conf. on Fuzzy Systems (FUZZ-IEEE), pp 1735–1742. IEEE Press
Baader F, Peñaloza R (2011) On the undecidability of fuzzy description logics with GCIs and product t-norm. In: Tinelli C., and Sofronie-Stokkermans V (eds), Frontiers of Comb. Syst. (FroCoS), volume 6989 of LNCS, pp 55–70. Springer
Bienvenu M, Ortiz M (2015) Ontology-mediated query answering with data-tractable description logics. In: Faber W, Paschke A (eds) Reasoning web, volume 9203 of LNCS, pp 218–307. Springer
Bobillo F, Bou F, Straccia U (2011) On the failure of the finite model property in some fuzzy description logics. Fuzzy Set Syst 172(1):1–12
Bobillo F, Delgado M, Gómez-Romero J (2009) Crisp representations and reasoning for fuzzy ontologies. Int J Uncertain Fuzz. 17(4):501–530
Bobillo F, Delgado M, Gómez-Romero J (2013) Reasoning in fuzzy OWL 2 with DeLorean. In: Bobillo F, da Costa PCG, d’Amato C, Fanizzi N, Laskey K, Laskey K, Lukasiewicz, Nickles M, Pool M (eds) Uncertainty reasoning for the semantic Web II, volume 7123 of LNCS, pp 119–138. Springer
Bobillo F, Straccia U (2011) Fuzzy ontology representation using OWL 2. Int J Appr Reas 52(7):1073–1094
Bobillo F, Straccia U (2013) Finite fuzzy description logics and crisp representations. In: Bobillo F, da Costa PCG, d’Amato C, Fanizzi N, Laskey K, Laskey K, Lukasiewicz T, Nickles M, Pool M (eds) Uncertainty Reasoning for the Semantic Web II, volume 7123 of LNCS, pp 99–118. Springer
Bobillo F, Straccia U (2016) The fuzzy ontology reasoner fuzzyDL. Knowl-Based Syst 95:12–34
Borgwardt S (2014) Fuzzy description logics with general concept inclusions. PhD thesis, Technische Universität Dresden
Borgwardt S, Cerami M, Peñaloza R (2015) The complexity of subsumption in fuzzy EL. In: Yang Q, Wooldridge M (eds) Int. Joint Conf. on Artif. Intell. (IJCAI), pp 2812–2818. AAAI Press
Borgwardt S, Distel F, Peñaloza R (2012) How fuzzy is my fuzzy description logic? In: Gramlich B, Miller D, Sattler U (eds) Int. Joint Conf. on Automated Reasoning (IJCAR), volume 7364 of LNAI, pp 82–96. Springer
Borgwardt S, Distel F, Peñaloza R (2014) Decidable Gödel description logics without the finitely-valued model property. In: Baral C, De Giacomo G, Eiter T (eds) Princ. of Knowl. Repr. and Reas. (KR), pp 228–237. AAAI Press
Borgwardt S, Distel F, Peñaloza R (2015) The limits of decidability in fuzzy description logics with general concept inclusions. Artif Intell 218:23–55
Borgwardt S, Leyva Galano JA, Peñaloza R (2014) The fuzzy description logic G-\({FL_0}\)
Borgwardt S, Mailis T, Peñaloza R, Turhan A-Y (2016) Answering fuzzy conjunctive queries over finitely valued fuzzy ontologies. J Data Sem 5(2):55–75
Borgwardt S, Peñaloza R. Algorithms for reasoning in very expressive description logics under infinitely valued Gödel semantics. Int J Appr Reas Submitted
Borgwardt S, Penaloza R (2011) Description logics over lattices with multi-valued ontologies. In: Walsh T (ed) Int Joint Conf. on Artif. Intell. (IJCAI)
Borgwardt S, Peñaloza R (2012) A tableau algorithm for fuzzy description logics over residuated De Morgan lattices. In: Krötzsch M, Straccia U (eds) Web Reas. and Rule Syst. (RR), volume 7497 of LNCS, pp 9–24. Springer
Borgwardt S, Peñaloza R (2012) Undecidability of fuzzy description logics. In: Brewka G, Eiter T, McIlraith SA (eds) Princ. of Knowl. Repr. and Reas. (KR), pp 232–242. AAAI Press
Borgwardt S, Peñaloza R (2013) The complexity of lattice-based fuzzy description logics. J Data Sem 2(1):1–19
Borgwardt S, Peñaloza R (2013) Positive subsumption in fuzzy EL with general t-norms. In: Rossi F (ed) Int. Joint Conf. on Artif. Intell. (IJCAI), pp 789–795. AAAI Press
Borgwardt S, Peñaloza R (2014) Consistency reasoning in lattice-based fuzzy description logics. Int J Appr Reas 55(9):1917–1938
Borgwardt S, Peñaloza R (2014) Finite lattices do not make reasoning in ALCOI harder. In: Bobillo F, Carvalho RN, da Costa PCG, d’Amato C, Fanizzi N, Laskey KB, Laskey KJ, T. Lukasiewicz, M. Nickles, and M. Pool, editors, Uncertainty Reasoning for the Semantic Web III, volume 8816 of LNAI, pp 122–141. Springer
Borgwardt S, Peñaloza R (2015) Reasoning in expressive description logics under infinitely valued Gödel semantics. In: Lutz C, Ranise S (eds) Frontiers of Comb. Syst. (FroCoS), volume 9322 of LNAI, pp 49–65. Springer
Borgwardt S, Peñaloza R (2016) Reasoning in fuzzy description logics using automata. Fuzzy Set Syst 298:22–43
Calvanese D, Eiter T, Ortiz M (2009) Regular path queries in expressive description logics with nominals. In C. Boutilier, editor, Int. Joint Conf. on Artif. Intell. (IJCAI), pp 714–720. AAAI Press
Cerami M, Straccia U (2011) On the undecidability of fuzzy description logics with GCIs with Łukasiewicz t-norm. CoRR, abs/1107.4212v3, 2011
Cerami M, Straccia U (2013) On the (un)decidability of fuzzy description logics under Łukasiewicz t-norm. Inf Sci 227:1–21
Dasiopoulou S, Kompatsiaris I, Strintzis MG (2009) Applying fuzzy DLs in the extraction of image semantics. J. Data Sem., XIV:105–132
T. Di Noia, M. Mongiello, and U. Straccia. Fuzzy description logics for component selection in software design. In: Bianculli D, Calinescu R, Rumpe B (eds) SEFM’15 Workshops, Selected Papers, volume 9509 of LNCS, pp. 228–239. Springer
Díaz-Rodríguez N, Cadahía O, Cuéllar M, Lilius J, Calvo-Flores M (2014) Handling real-world context awareness, uncertainty and vagueness in real-time human activity tracking and recognition with a fuzzy ontology-based hybrid method. Sensors 14(20):18131–18171
Hájek P (1998) Metamathematics of Fuzzy Logic, volume 4 of Trends in logic. Kluwer
Hájek P (2005) Making fuzzy description logic more general. Fuzzy Set Syst 154(1):1–15
Hollunder B (1996) Consistency checking reduced to satisfiability of concepts in terminological systems. Ann Math Artif Intell 18(2–4):133–157
Horrocks I, Kutz O, Sattler U (2006) The even more irresistible SROIQ. In: Doherty P, Mylopoulos J, Welty C (eds) Princ. of Knowl. Repr. and Reas. (KR), pp 57–67. AAAI Press
Horrocks I, Sattler U (2004) Decidability of SHIQ with complex role inclusion axioms. Artif Intell 160(1–2):79–104
Mailis T, Peñaloza R, Turhan AY (2014) Conjunctive query answering in finitely-valued fuzzy description logics. In: Kontchakov R, Mugnier ML (eds) Web Reas. and Rule Syst. (RR), volume 8741 of LNCS, pp 124–139. Springer
Mailis T, Stoilos G, Simou N, Stamou GB, Kollias S (2012) Tractable reasoning with vague knowledge using fuzzy \({EL^{++}}\). J Intell Inf Syst 39(2):399–440
Mailis T, Turhan AY (2014) Employing \({DL-Lite}_R\)-reasoners for fuzzy query answering. In: Supnithi T, Yamaguchi T, Pan JZ, Wuwongse V, Buranarach M (eds) Joint Int. Semantic Technology Conf. (JIST), volume 8943 of LNCS, pp 63–78. Springer
Merz D, Peñaloza R, Turhan AY (2014) Reasoning in ALC with fuzzy concrete domains. In: Lutz C, Thielscher M (eds) German Conf. on Artificial Intelligence (KI), volume 8736 of LNAI, pp 171–182. Springer
Ortiz M, Šimkus M (2012) Reasoning and query answering in description logics. In: Eiter T, Krennwallner T (eds) Reasoning Web, volume 7487 of LNCS, pp 1–53. Springer
Pan JZ, Stamou GB, Stoilos G, Thomas E (2007) Expressive querying over fuzzy DL-Lite ontologies. In: Calvanese D, Franconi E, Haarslev V, Lembo D, Motik B, Turhan AY, Tessaris S (eds) Workshop on description logics (DL), volume 250 of CEUR-WS, pp 427–434
Schild K (1991) A correspondence theory for terminological logics: preliminary report. In: Mylopoulos J, Reiter R (eds) Int. Joint Conf. on Artif. Intell. (IJCAI), pp 466–471. Morgan Kaufmann
Stoilos G, Simou N, Stamou G, Kollias S (2006) Uncertainty and the semantic web. IEEE Intell Syst 21(5):84–87
Stoilos G, Stamou GB (2014) Reasoning with fuzzy extensions of OWL and OWL 2. Knowl Inf Syst 40(1):205–242
Straccia U (1998) A fuzzy description logic. In: Nat. Conf. on Artificial Intelligence (AAAI), pp 594–599
Straccia U (2001) Reasoning within fuzzy description logics. J Artif Intell Res 14:137–166
Straccia U (2004) Uncertainty in description logics: a lattice-based approach. In: Inf. Process. and Manag. of Uncertainty in Knowl.-Based Syst. (IPMU), pp 251–258
Straccia U (2005) Description logics with fuzzy concrete domains. In: Bacchus F, Jaakola T (eds) Uncertainty in artificial intelligence (UAI), pp 559–567. AUAI Press
Straccia U (2006) Answering vague queries in fuzzy DL-Lite. In: Inf. Process. and Manag. of Uncertainty in Knowl.-Based Syst. (IPMU), pp 2238–2245. Éditions EDK
Straccia U (2014) On the top-k retrieval problem for ontology-based access to databases. In: Pivert O, Awomir Zadrozny S (eds) Flexible approaches in data, information and knowledge management, volume 497 of Studies in Computational Intelligence, pp 95–114. Springer
Straccia U, Mucci M (2015) pFOIL-DL: learning (fuzzy) EL concept descriptions from crisp OWL data using a probabilistic ensemble estimation. In: Wainwright RL, Corchado JM, Bechini A, Hong J (eds) Symp. on Applied Computing (SAC), pp 345–352. ACM
Tobies S (2000) The complexity of reasoning with cardinality restrictions and nominals in expressive description logics. J Artif Intell Res 12:199–217
Tresp CB, Molitor R (1998) A description logic for vague knowledge. In: Prade H (ed) Eur. Conf. Artificial Intelligence (ECAI), pp 361–365. John Wiley & Sons
Tsatsou D, Dasiopoulou S, Kompatsiaris I, Mezaris V (2014) LiFR: a lightweight fuzzy DL reasoner. In: Presutti V, Blomqvist E, Troncy R, Sack H, Papadakis I, Tordal A (eds) ESWC Satellite Events, volume 8798 of LNCS, pp 263–267. Springer
Zadeh LA (1965) Fuzzy sets. Inf Control 8(3):338–353
Acknowledgements
This report describes the outcome of the project Reasoning in Fuzzy Description Logics with General Concept Inclusion Axioms (FuzzyDL) funded by the German Research Foundation (DFG) grant BA 1122/17-1. We are indebted to Felix Distel, Marco Cerami, Theofilos Mailis, and Anni-Yasmin Turhan for many discussions and contributions.
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Supported by DFG under grant BA 1122/17–1.
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Baader, F., Borgwardt, S. & Peñaloza, R. Decidability and Complexity of Fuzzy Description Logics. Künstl Intell 31, 85–90 (2017). https://doi.org/10.1007/s13218-016-0459-3
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DOI: https://doi.org/10.1007/s13218-016-0459-3