Social networks are currently gaining increasing impact especially in the light of theongoing growth of web-based services like facebook.com. A central challenge for the socialnetwork analysis is the identification of key persons within a social network. In this context,the article aims at...

Due to the importance of using up to date data in information systems, this paper analyzes how thedata quality dimension currency can be quantified. Based on several requirements (e.g. normalization andinterpretability) and a literature review, we design a procedure to develop probability based...