Using the K Nearest Neighbor Method and BM25 in the Patent Document Categorization Subtask at NTCIR-5.

@inproceedings{murata-2005-using, author = {Masaki Murata and Toshiyuki Kanamaru and Tamotsu Shirado and Hitoshi Isahara}, editor = {Noriko Kando}, title = {{Using the K Nearest Neighbor Method and BM25 in the Patent Document Categorization Subtask at NTCIR-5}}, booktitle = {{Proceedings of the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-5, National Center of Sciences, Tokyo, Japan, December 6-9, 2005}}, publisher = {National Institute of Informatics (NII)}, year = {2005}, url = {http://research.nii.ac.jp/ntcir/workshop/OnlineProceedings5/data/PATENT/NTCIR5-PATENT-MurataM.pdf} }