%A Han Hongqi,Gui Jie,Xu Shuo,Liu Yuqin %T Technical Strength Evaluation Method Based on Patent Text Data %0 Journal Article %D 2014 %J Data Analysis and Knowledge Discovery %R 10.11925/infotech.1003-3513.2014.01.10 %P 66-71 %V 30 %N 1 %U {https://manu44.magtech.com.cn/Jwk_infotech_wk3/CN/abstract/article_3844.shtml} %8 2014-01-25 %X [Objective] The paper aims to propose a method to evaluate enterprise technical strength based on patent text data without citation data. [Methods] Four indexes are used to evaluate technical strength comprehensively,including valid granted patent quantity index,patent growth ratio index,technical centrality index and patent minimum value index. The four indexes reflect technical strength respectively from technical scale,growth,importance and value.[Results] The experimental results on indexes comparison between CII and TII show that citation analysis give higher value to earlier publicated patents. Another experimental results on indexes comparison between TS and TSQGIV show the effectiveness of the proposed method. [Limitations] The enterprise names are not normalized in data pre-process,which might cause errors to experimental results. [Conclusions] Compared with previous methods,the proposed novel method can evaluate technical strength of companies without citation data.