Recently, aggregated journal-journal citation networks were made accessible from the perspective of each journal included in the Science Citation Index (see http://www.leydesdorff.net/). The local matrices can be used to inspect the relevant citation environment of a journal using statistical analysis and visualization techniques from social network analysis. The inspection gives an answer to t...

We present a novel problem of searching for ‘familiar strangers’ in a social network. Familiar strangers are individuals who are not directly connected but exhibit some similarity. The power-law nature of social networks determines that majority of individuals are directly connected with a small number of fellow individuals, and similar individuals can be largely unknown to each other. Moreover...

Information pertaining to the patent system is scattered not only across the patent domain, but also across other scientific and regulatory domains. In recent years, there has been an explosive growth in scientific and regulatory documents related to the patent system. In this project, the use of networks and network analyses is applied to an Information Retrieval (IR) problem in the patent dom...

One of the most challenging problems in technological forecasting is to identify as early as possible those technologies that have the potential to lead to radical changes in our society. In this paper, we use the US patent citation network (1926-2010) to test our ability to early identify a list of historically significant patents through citation network analysis. We show that in order to eff...

Author bibliographic coupling is extended from bibliographic coupling concept and holds the view that two authors with more common references are more related and have more similar research interests. This study aims to examine the association between author bibliographic coupling strength and citation exchange in Information Science & Library Science and more specifically, in imetrics. The res...

To improve the search performance of retrieval methods using cocitation linkages, this study proposes a technique to enlarge a co-citation network by incorporating satellite documents. This technique specifies satellite documents via full-text searches for terms obtained from documents having cocitation linkages with a seed document; the appropriateness of each co-citation linkage is checked by...

The citation network of the International Journal of Research in Marketing (IJRM) is examined from 1981 to 1995. We propose a model that contains log-linear and logmultiplicative terms to estimate simultaneously the importance, cohesion, and structural equivalence of journals in the network across time. Our findings show that the overall importance of IJRM in its network is low but growing. The...

This Article reports an empirical study of the network composed of patent “nodes” and citation “links” between them. It builds on an earlier study in which we argued that trends in the growth of the patent citation network provide evidence that the explosive growth in patenting in the late twentieth century was due at least in part to the issuance of increasingly trivial patents. We defined a m...