关键词: 文本挖掘, 专利质量, 技术新颖度

Abstract: The state-of-the-art on evaluation of patent value and the limit of appliance have been discussed.Furthermore,the paper have proposed an approach for quality estimation of patent taking on text-mining technique that extracted the inherent,objective and quantitative information hiding in patent database.The technology novelty measurement function has been defined to quantify the novelty degree about some special technology in order to estimate patent quality;then an empirical illustration about optical communication technology in China has been evaluated and the results showed this approach is effective.

Key words: text mining, patent quality, technology novelty