Ronald Fagin, Benny Kimelfeld, Frederick Reiss, Stijn Vansummeren. Spanners: a formal framework for information extraction. In Richard Hull, Wenfei Fan, editors, Proceedings of the 32nd ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, PODS 2013, New York, NY, USA - June 22 - 27, 2013. pages 37-48, ACM, 2013. [doi]
Abstract is missing.