@inproceedings{AlbGavLam17-RR-IC, author = {Alberti, Marco and Gavanelli, Marco and Lamma, Evelina and Riguzzi, Fabrizio and Riccardo, Zese}, editor = {Costantini, Stefania and Franconi, Enrico and Van Woensel, William and Kontchakov, Roman and Sadri, Fariba and Roman, Dumitru}, title = {Dischargeable Obligations in Abductive Logic Programming}, booktitle = {Rules and Reasoning: International Joint Conference, RuleML+RR 2017, London, UK, July 12--15, 2017, Proceedings}, year = {2017}, publisher = {Springer International Publishing}, copyright = {Springer International Publishing AG}, series = {Lecture Notes in Computer Science}, volume = {10364}, address = {Cham}, isbn-print = {978-3-319-61251-5}, isbn-online = {978-3-319-61252-2}, doi = {10.1007/978-3-319-61252-2_2}, pdf = {http://ml.unife.it/wp-content/uploads/Papers/AlbGavLam-RR17.pdf}, pages = {7--21}, abstract = { Abductive Logic Programming (ALP) has been proven very effective for formalizing societies of agents, commitments and norms, in particular by mapping the most common deontic operators (obligation, prohibition, permission) to abductive expectations. In our previous works, we have shown that ALP is a suitable framework for representing norms. Normative reasoning and query answering were accommodated by the same abductive proof procedure, named SCIFF. In this work, we introduce a defeasible flavour in this framework, in order to possibly discharge obligations in some scenarios. Abductive expectations can also be qualified as dischargeable, in the new, extended syntax. Both declarative and operational semantics are improved accordingly, and proof of soundness is given under syntax allowedness conditions. The expressiveness and power of the extended framework, named SCIFFD, is shown by modeling and reasoning upon a fragment of the Japanese Civil Code. In particular, we consider a case study concerning manifestations of intention and their rescission (Section II of the Japanese Civil Code).}, keywords = {Abduction, Abductive Logic Programming, Legal Reasoning, Normative Reasoning}, note = {The final publication is available at Springer via \url{http://dx.doi.org/10.1007/978-3-319-61252-2_2}} }
@inproceedings{GavLamRig17-JURISIN-IC, author = {Gavanelli, Marco and Lamma, Evelina and Riguzzi, Fabrizio and Bellodi, Elena and Riccardo, Zese and Cota, Giuseppe}, editor = {Otake, Mihoko and Kurahashi, Setsuya and Ota, Yuiko and Satoh, Ken and Bekki, Daisuke}, title = {Abductive Logic Programming for Normative Reasoning and Ontologies}, booktitle = {New Frontiers in Artificial Intelligence: JSAI-isAI 2015 Workshops, LENLS, JURISIN, AAA, HAT-MASH, TSDAA, ASD-HR, and SKL, Kanagawa, Japan, November 16-18, 2015, Revised Selected Papers}, year = {2017}, publisher = {Springer International Publishing}, copyright = {Springer International Publishing AG}, series = {Lecture Notes in Computer Science}, volume = {10091}, address = {Cham}, pages = {187--203}, isbn-online = {978-3-319-50953-2}, isbn-print = {978-3-319-50952-5}, doi = {10.1007/978-3-319-50953-2_14}, scopus = {2-s2.0-85018397999} }
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