@article{LamMelMil99-InfSciences99-IJ, author = {Evelina ~Lamma AND Paola ~Mello AND Michela ~Milano AND Fabrizio ~Riguzzi}, title = {Integrating Induction and Abduction in Logic Programming}, journal = {Information Sciences}, pages = {25--54}, volume = {116}, number = {1}, year = 1999, month = may, abstract = {We propose an approach for the integration of abduction and induction in Logic Programming. We define an Abductive Learning Problem as an extended Inductive Logic Programming problem where both the background and target theories are abductive theories and where abductive derivability is used as the coverage relation instead of deductive derivability. The two main benefits of this integration are the possibility of learning in presence of incomplete knowledge and the increased expressive power of the background and target theories. We present the system LAP (Learning Abductive Programs) that is able to solve this extended learning problem and we describe, by means of examples, four different learning tasks that can be performed by the system: learning from incomplete knowledge, learning rules with exceptions, learning from integrity constraints and learning recursive predicates.}, keywords = {Abduction, Negation, Integrity Constraints}, publisher = {Elsevier Science}, address = {Amsterdam, \TheNetherlands}, pdf = {http://ml.unife.it/wp-content/uploads/Papers/LamMelMil-IS99.pdf}, doi = {10.1016/S0020-0255(98)10092-0}, url = {http://www.sciencedirect.com/science/article/pii/S0020025598100920}, copyright = {Elsevier} }
@inproceedings{LamRigPer99-ILP99LateBreakingPapers-IW, author = {Evelina Lamma and Fabrizio Riguzzi and Lu\'{i}s Moniz Pereira}, title = {Learning Three-valued Logic Programs}, booktitle = {Late Breaking Paper, 9th International Workshop on Inductive Logic Programming (ILP99)}, year = 1999, editor = {S. Dzeroski and P. Flach}, month = jun, address = {Bled, \Slovenia}, pdf = {http://ml.unife.it/wp-content/uploads/Papers/LamRigPer-ILP99.pdf} }
@inproceedings{LamRigPer99-ACAI99-IW, author = {Evelina Lamma and Fabrizio Riguzzi and Lu\'{i}s Moniz Pereira}, title = {Agents Learning in a Three-Valued Logical Setting}, booktitle = {Workshop on Machine Learning and Intelligent Agents Advanced Course on Artificial Intelligence 1999 (ACAI'99)}, year = 1999, address = {Crete, \Greece}, month = jul, pdf = {http://ml.unife.it/wp-content/uploads/Papers/LamRigPer-ACAI99.pdf} }
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