Local search and the evolution of technological capabilities
提出一种网络分析方法，识别企业技术位置的演化，并检验本地搜索是否约束研发方向，通过分析日本十大半导体企业1982-1992年的战略合作与技术创新来展示其用途。
The assumption that ‘local search’ constrains the direction of corporate R&D is central in evolutionary perspectives on technological change and competition. In this paper, we propose a network-analytic approach for identifying the evolution of firms' technological positions. The approach (1) permits graphical and quantitative assessments of the extent to which firms' search behavior is locally bounded, and (2) enables firms to be positioned and grouped according to the similarities in their innovative capabilities. The utility of the proposed framework is demonstrated by an analysis of strategic partnering and the evolution of the technological positions of the 10 largest Japanese semiconductor producers from 1982 to 1992.