The online encyclopedia Wikipedia gives rise to a multitude of network structures such as the citation network of its pages or the coauthorship network of users. In this paper we analyze another network that arises from the fact that Wikipedia articles undergo perpetual editing. It can be observed that the edit volume of Wikipedia pages varies strongly over time, often triggered by news events ...

This paper explores scientific metrics in citation networks in scientific communities, how they differ in ranking papers and authors, and why. In particular we focus on network effects in scientific metrics and explore their meaning and impact. We initially take as example three main metrics that we believe significant; the standard citation count, the more and more popular hindex, and a variat...

Bibliographic coupling (BC) and co-citation (CC) are the two most common citation-based measures of similarity between scientific items. One can interpret these as second-neighbor relations distinguished by direction citation: BC is a citing items, whereas CC that cited A previous study proposed two-layer node split network emulate clusters in computationally efficient manner; however, lack int...

As open innovation has received increasingly attention in the management of innovation, the importance of identifying potential partnership is increasing. This paper suggests a methodology to identify the interested parties as one of Innovation intermediaries to enable open innovation with patent network. To implement the methodology, multi-stage patent citation analysis such as bibliographic c...

In this paper, a spatial preferential attachment model for complex networks in which there is non-uniform distribution of the nodes in the metric space is studied. In this model, the metric layout represents hidden information about the similarity and community structure of the nodes. It is found that, for density functions that are locally constant, the graph properties can be well approximate...

The term of advanced technology is primarily associated with computer electronics and microelectronics actively developing since 1960s. Although there is no single conventional definition of the notion or specific class of technology that is associated with it, discussions on what may be considered as technical advancements in the current perspective evolve over time. As long as there is contin...

The dynamic nature of citation networks makes the task of ranking scientific articles hard. Citation networks are continually evolving because articles obtain new citations every day. For ranking scientific articles, we can define the popularity or prestige of a paper based on the number of past citations at the user query time; however, we argue that what is most useful is the expected future ...

A journal’s impact and similarity with rivals is closely related to its competitive intensity. A subject area can be considered as an ecological system of journals, and can then be measured using the competitive intensity concept from plant systems. Based on Journal Citation Reports data from 1997, 2000, 2005, 2010, and 2013, we calculated the mutual citation, cosine similarity, and competitive...