Katsuya Masuda, Jun-ichi Tsujii. Nested region algebra extended with variables for tag-annotated text search. In James G. Shanahan, Sihem Amer-Yahia, Ioana Manolescu, Yi Zhang, David A. Evans, Aleksander Kolcz, Key-Sun Choi, Abdur Chowdhury, editors, Proceedings of the 17th ACM Conference on Information and Knowledge Management, CIKM 2008, Napa Valley, California, USA, October 26-30, 2008. pages 1349-1350, ACM, 2008. [doi]
Abstract is missing.