相关性视角下基于信息熵的技术多元化测量研究

Measuring Technical Diversification Based on Information Entropy under the Perspective of Interrelatedness

针对技术多元化测量口径不一的问题,提出了基于信息熵的测量方法。基于技术相关性视角,将技术多元化分为非相关技术多元化(UTD)和相关技术多元化(RTD)。采集德温特创新索引(DII)收录的4G技术专利,通过计算IPC小类和小组的信息熵测量领先性企业的UTD和RTD水平。4G领先性企业的UTD、RTD水平存在一定的差异性。根据企业UTD和RTD的综合表现,可将4G领先性企业的技术多元化创新模式分为综合型和归核型两类。

Methods measuring technical diversification based on information entropy was suggested to unite measuring specification. Tech- nological diversification was classified into unrelated technological diversification （ UTD ）, and related technological diversification （RTD） under the perspective of interrelatedness. Patents on 4G from Derwent Innovation Index （DII） were collected to measure 4G leaders＇ UTD and RTD by computing information entropy of IPC sub-class and sub-group respectively. UTD and RTD of 4G leaders varied widely. According to comprehensive performance of UTD and RTD, technological diversification patterns of 4G leaders were classified into overall innovation pattern and focused innovation pattern.