日本专利联合申请网络的空间特征
Spatial Characteristics of Joint Application Networks in Japanese Patents
摘要：
人们广泛研究了技术创新，以使企业具有可持续性和更强的竞争力。在这方面，最近最重要的问题是公司之间的合作创新的动态。因此，我们研究了一个专利网络，特别关注其空间特征。结果可总结如下。(1)专利网络中的度分布遵循幂律。然后，一个公司可以通过连接到该公司的集线器连接到许多公司。(2)相邻节点的平均度之间存在零相关关系，而聚类系数之间存在负相关关系。后者意味着存在分层结构，并且桥接不同的模块可以缩短其中节点之间的路径。(3)联系的距离不仅表明企业的区域聚集，而且还表明旅行所需时间的重要性，这在建立联系方面起着关键作用。(4)城市内部联系的比例表明，我们必须考虑公司现有的联系，以促进新联系的建立。
英文摘要：
Technological innovation has extensively been studied to make firms sustainable and more competitive. Within this context, the most important recent issue has been the dynamics of collaborative innovation among firms. We therefore investigated a patent network, especially focusing on its spatial characteristics. The results can be summarized as follows. (1) The degree distribution in a patent network follows a power law. A firm can then be connected to many firms via hubs connected to the firm. (2) The neighbors' average degree has a null correlation, but the clustering coefficient has a negative correlation. The latter means that there is a hierarchical structure and bridging different modules may shorten the paths between the nodes in them. (3) The distance of links not only indicates the regional accumulations of firms, but the importance of time it takes to travel, which plays a key role in creating links. (4) The ratio of internal links in cities indicates that we have to consider the existing links firms have to facilitate the creation of new links.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
