This paper describes the Patent Retrieval Task in the Fourth NTCIR Workshop, and the test collections produced in this task. We perform the invalidity search task, in which each participant group searches a patent collection for the patents that can invalidate the deman... View more
Iwayama, Makoto, Atsushi Fujii, Noriko Kando, and Yuzo Marukawa, 2003a. An empirical study on retrieval models for different document genres: Patents and newspaper articles. In Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval.
Iwayama, Makoto, Atsushi Fujii, Noriko Kando, and Akihiko Takano, 2003b. Overview of patent retrieval task at NTCIR-3. In Proceedings of the Third NTCIR Workshop on Research in Information Retrieval, Automatic Text Summarization and Question Answering.
Voorhees, Ellen M. and Dawn M. Tice, 2000. Building a question answering test collection. In Proceedings of the 23rd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval.