Abstract The geospatial characteristics of transportation networks structurally constrain their features, and as a result, analysis methods designed for social typically fail to capture useful or make informative comparisons. In the case road networks, natural constraints on edge distribution weaken ability standard community detection algorithms find clusters nodes that align with neighborhood...

In this paper we examine the network structure of the MythTV mailing list, an online technology Q&A user community, and we use time-series analysis techniques to study users’ reciprocity behavior in this community. We find that the amount of help users provide is strongly correlated to the amount of help they receive. Further, by conducting the Granger Causality test on the time series data of ...

One of the more disruptive reforms associated with the modern Internet is the emergence of online communities working together on knowledge artefacts such as Wikipedia and OpenStreetMap. Recently it has become clear that these initiatives are vulnerable because of problems with membership turnover. This study presents a longitudinal analysis of 891 WikiProjects where we model the impact of memb...

Both authors of this paper have been engaged in the community networking movement and its evolution for many years in an ongoing effort to help create online systems that meet human needs. Among other things, community networks are intended to help address shared "public affairs" in geographical areas. Although this goal is important and laudable, community networking communities are often unab...

The concept of “weatherwikis”web 2.0 platforms for sharing weather information between individuals – is faced with several challenges. While some studies confirm satisfactory reliability of user-generated weather information, sources of motivations to contribute are yet unexplored. This paper provides a theoretical framework for weatherwikis, based on social capital theory, and three empirical ...

In this paper we analyse a social structure of an online community defined through tagging practices, and investigate whether useful knowledge about the evolution of social networks can be mined through tagging practices, and whether a more representative social structure has any influence on the tagging experience itself. The results from tagging behaviors also need to be represented semantica...