Invalidity Search for USPTO Patent Documents Using Different Patent Surrogates.

@inproceedings{tseng-2007-invalidity, author = {Yuen-Hsien Tseng and Chen-Yang Tsai and Da-Wei Juang}, editor = {Noriko Kando}, title = {{Invalidity Search for USPTO Patent Documents Using Different Patent Surrogates}}, booktitle = {{Proceedings of the 6th NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access, NTCIR-6, National Center of Sciences, Tokyo, Japan, May 15-18, 2007}}, publisher = {National Institute of Informatics (NII)}, year = {2007}, url = {http://research.nii.ac.jp/ntcir/workshop/OnlineProceedings6/NTCIR/46.pdf} }