Abstract: In market economy, the innovation ability of enterprises has become very important factor to development of enterprises and competition. In this paper, the indexes of affecting the innovation ability of enterprises are reduced with rough set theory and main factors are obtained. Then the principal component analysis is used to get the synthetic judgment. At last, one certain enterprise as a specific example are given to get level of innovation ability contrast to others and prove the method’s validity.

Key words: data mining, the ability of innovation, rough set, reduction, principal component analysis

摘要： 基于数据挖掘中粗糙集理论对影响企业创新能力指标进行约简后,提取影响企业创新能力的主要指标,然后应用统计学中的主成分分析进行综合评价。最后，用某企业的具体统计数据，得出该企业对比其他企业的创新能力水平，以证明方法的有效性。

关键词: 数据挖掘, 创新能力, 粗糙集, 约简, 主成分分析