eprintid: 1769 rev_number: 6 eprint_status: archive userid: 46 dir: disk0/00/00/17/69 datestamp: 2013-09-17 12:55:31 lastmod: 2015-02-18 12:01:09 status_changed: 2013-09-17 12:55:31 type: book_section succeeds: 1700 metadata_visibility: show creators_name: Gnecco, Giorgio creators_name: Gori, Marco creators_name: Melacci, Stefano creators_name: Sanguineti, Marcello creators_id: giorgio.gnecco@imtlucca.it creators_id: creators_id: creators_id: title: Learning with Hard Constraints ispublished: pub subjects: QA75 divisions: CSA full_text_status: none pres_type: paper keywords: Learning from constraints; learning with prior knowledge; multi-task learning; support constraints; constrained variational calculus note: 23rd International Conference on Artificial Neural Networks Sofia, Bulgaria, September 10-13, 2013. Proceedings abstract: A learning paradigm is proposed, in which one has both classical supervised examples and constraints that cannot be violated, called here “hard constraints”, such as those enforcing the probabilistic normalization of a density function or imposing coherent decisions of the classifiers acting on different views of the same pattern. In contrast, supervised examples can be violated at the cost of some penalization (quantified by the choice of a suitable loss function) and so play the roles of “soft constraints”. Constrained variational calculus is exploited to derive a representation theorem which provides a description of the “optimal body of the agent”, i.e. the functional structure of the solution to the proposed learning problem. It is shown that the solution can be represented in terms of a set of “support constraints”, thus extending the well-known notion of “support vectors”. date: 2013 series: Lecture notes in computer science number: 8131 publisher: Springer pagerange: 146-153 event_title: 23rd International Conference on Artificial Neural Networks event_location: Sofia, Bulgaria event_dates: September 10th-13th, 2013 event_type: conference id_number: 10.1007/978-3-642-40728-4_19 refereed: TRUE isbn: 978-3-642-40728-4 book_title: Artificial Neural Networks and Machine Learning – ICANN 2013 official_url: http://dx.doi.org/10.1007/978-3-642-40728-4_19 related_url_type: org citation: Gnecco, Giorgio and Gori, Marco and Melacci, Stefano and Sanguineti, Marcello Learning with Hard Constraints. In: Artificial Neural Networks and Machine Learning – ICANN 2013. Lecture notes in computer science (8131). Springer, pp. 146-153. ISBN 978-3-642-40728-4 (2013)