NTCIR-5 Patent Retrieval Experiments at RICOH

the Fifth NTCIR Workshop Meeting on Evaluation of Information Access Technologies: Information Retrieval, Question Answering and Cross-Lingual Information Access

计算机科学;图书情报档案学

Hideo ITOH

Others  :  http://research.nii.ac.jp/ntcir/workshop/OnlineProceedings5/data/PATENT/NTCIR5-PATENT-ItohH.pdf
PID  :  52331

来源: CEUR

【 摘 要 】

Focusing on the IPC (International Patent Classi- cation) of patent, two retrieval methods were examined. One is to use the IPC code of the query patent and the other is to exploit the codes assigned to top- N retrieved patents in a similar manner of pseudo- relevance feedback. In both methods, the codes were used as constraint on retrieval results. As a result, we found the former is clearly effective and the latter’s effect is positive but small. Another point of our experiments is exploitation of synonyms, which were automatically collected from a machine-readable dictionary for each query term.