Norm conflict identification in contracts

João Paulo Aires, Daniele Pinheiro, Vera Strube de Lima, Felipe Meneguzzi

Research output: Contribution to journalArticlepeer-review


The exchange of goods and services between individuals is often formalised by a contract in which the parties establish norms to define what is expected of each one. Norms use deontic statements of obligation, prohibition, and permission, which may be in conflict. The task of manually detecting norm conflicts can be time–consuming and error-prone since contracts can be vast and complex. To automate such tasks, we develop an approach to identify potential conflicts between norms. We show the effectiveness of our approach and its individual components empirically using two publicly available corpora, and contribute with a new annotated test corpus for norm conflict identification.
Original languageEnglish
Pages (from-to)397-428
Number of pages32
JournalArtificial Intelligence and Law
Early online date24 Aug 2017
Publication statusPublished - 24 Dec 2017


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