Francisco Maturana, Cristian Riveros, Domagoj Vrgoc. Document Spanners for Extracting Incomplete Information: Expressiveness and Complexity. In Jan Van den Bussche, Marcelo Arenas, editors, Proceedings of the 37th ACM SIGMOD-SIGACT-SIGAI Symposium on Principles of Database Systems, Houston, TX, USA, June 10-15, 2018. pages 125-136, ACM, 2018. [doi]
Abstract is missing.