Similarity Determination in Activity Sequences – A Supportive Framework

An increasing number of information systems support their users by helping them in reusing existing knowledge and experience. Often this is done by retrieving similar instances like similar documents, similar process executions or similar persons. While the recommendations use similarity as central concept, the selection of a suitable measure is often done by intuition. This paper introduces a framework that supports the application engineer in selecting and configuring a suitable similarity measure. The requirements of the intended framework are gathered before the architectural implications are detailed. The resulting framework is applied in a case study in which project performance prediction is to be supported by the similarity of the projects’ activity sequences. The results show the framework’s utility by allowing a comparably simple configuration to yield a considerable support in selecting and configuring a suitable similarity measure

On the usage of theories in the field of Wirtschaftsinformatik : a quantitative literature analysis

The development of theories is a central goal of every scientific discipline. Hence, theory development is also of considerable importance to the field of Wirtschaftsinformatik (WI), which seeks to progress as a scientific discipline. WI is the discipline focussing on research and design of information systems conducted by the German-speaking community. WI has slightly different objectives, focusses on different methods and different desired results compared to the Anglo-American Information Systems (IS) research discipline. Although both disciplines deal with information systems as their main research object, Mertens et al. (2014) propose to consider both disciplines as halfsister disciplines (in German: Halbschwesterdisziplinen). Against the background of the growing importance of theory development in WI, a lot of WI research contributions use and reference existing theories and theoretical models for different purposes, e.g. to derive and test hypotheses or to justify design decisions in the context of information systems’ design and development. Often, these theories originate from related scientific disciplines like economics or psychology. However, as it is still not clear which theories are of particular importance to WI research, this report aims at presenting a detailed analysis of the current usage of theories in WI and addresses the following research questions: Which theories are used in WI research and where do they originate from? and How has the usage of theories developed over time? These questions were examined based on a systematic analysis of a broad amount of scientific literature. Thus, this report is supposed to make a contribution to the ongoing discussion on the theoretical foundations of WI. Our analysis shows that 1,160 WI articles from 2000 to 2011 do, in large part, reference the same theories as Anglo-American Information Systems (IS) research. These findings are discussed and implications are highlighted