中文摘要：

本文基于价值链理论，将企业技术创新活动分解为科技研发和成果转化两个相关联的子过程，且认为原始创新投入也会对第二阶段经济产出产生直接影响，进而运用共享投入关联型两阶段DEA模型研究了我国15个不同性质企业的技术创新效率。

英文摘要：

Based on the theory of value chain, we decompose the technology innovation activity into two relational stages of R＆D and S＆T convention, and think that the original innovation input will also have a direct influence on the economic output of the sec- ond stage. Then we construct the relational two-stage DEA models with shared inputs to compute the different kinds of industrial enterprise＇s innovation efficiency.