Guohui Xiao, Roman Kontchakov, Benjamin Cogrel, Diego Calvanese, Elena Botoeva. Efficient Handling of SPARQL OPTIONAL for OBDA. In Denny Vrandecic, Kalina Bontcheva, Mari Carmen Suárez-Figueroa, Valentina Presutti, Irene Celino, Marta Sabou, Lucie-Aimée Kaffee, Elena Simperl, editors, The Semantic Web - ISWC 2018 - 17th International Semantic Web Conference, Monterey, CA, USA, October 8-12, 2018, Proceedings, Part I. Volume 11136 of Lecture Notes in Computer Science, pages 354-373, Springer, 2018. [doi]
Abstract is missing.