Taking into account the fact that in the perspective of implicit institutional arrangements , the innovation power level of private enterprises evaluation index system includes qualitative and quantitative indicators , and most of the them have fuzzy uncertainty characteristics , this paper constructs the multidimensional relationship matrix of innovation power level of private enterprises based on the fuzzy mathematics . Through combining the data of private enterprise of strategic emerging industries from 2005 to 2007 and establishing the fuzzy evaluation model of innovation power level of private enterprises with fuzzy comprehensive evaluation method , this paper examines the degree of influence and channels by which the hidden institutional arrangements affected innovation power level of private enterprises from a new perspective . The result indicates that there is a regional non -equilibrium distribution in the level and trend of the private enterprise innovation power largely because of the different regional institutional system . Because of the important influence , currently our main task is to remove the institutional barriers to innovation and create an institutional environment conducive to innovation .%考虑到存在隐性制度安排视角下，企业创新动力评价指标多为定性指标和定量指标共同组成，且大多指标取值具有模糊不确定性的特征，本文基于模糊数学理论构造了民营企业创新动力多维关系矩阵，在此基础上，结合2005～2007年战略性新兴产业民营企业数据，运用模糊综合评价法建立民营企业创新动力模糊评价模型，从一个全新的角度检验了隐性制度安排对民营企业创新动力的影响程度和渠道。结果显示，中国战略性新兴产业民营企业创新动力水平呈现出区域非均衡性分布，制度环境特别是隐性制度环境在中国战略性新兴产业民营企业创新动力的生成和发展过程中扮演着关键的角色。在此基础上，为优化制度环境，本文提出了加强对政策性金融工具的监督，加强监督机制，完善政府采购法律法规，使政府采购公平公正，严格减免税批准审核机制的政策建议。
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