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Vinkovits M.,Fraunhofer Institute for Applied Information Technology
2012 10th Annual International Conference on Privacy, Security and Trust, PST 2012 | Year: 2012

Research in the field of Trust Management is blooming producing new Trust Frameworks within short time intervals. However, trust researchers do not develop distributed systems. Most developers are not familiar with security procedures and therefore often introduce other security vulnerabilities during implementation. We wish to provide a solution for system designers and developers for applying Trust Management. As a first step of our work we investigated how our users understand the application of trust and reputation in distributed systems. During focus group workshops we collected a set of initial requirements. We learnt that users are familiar with the benefits gained by Trust Management but had not enough knowledge about its application. © 2012 IEEE.

Mohamad Y.,Fraunhofer Institute for Applied Information Technology
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2014

This STS on Emotions for Accessibility is targeted towards the description of affective computing approaches e.g. emotional state detection, emotional state elicitation and their potential usage in the context of users who are disabled or older people. These user groups may gain a lot of benefits from affective computing systems e.g. in support of communication especially none verbal, management of emotional states or stress, or just improving therapy procedures etc. © Springer International Publishing 2014.

Prause C.R.,Fraunhofer Institute for Applied Information Technology
SIGSOFT/FSE 2011 - Proceedings of the 19th ACM SIGSOFT Symposium on Foundations of Software Engineering | Year: 2011

This paper proposes a PhD research that deals with improving internal documentation in software projects. Software developers often do not like to create documentation because it has few value to the individual himself. Yet the purpose of internal documentation is to help others understand the software and the problem it addresses. Documentation increases development speed, reduces software maintenance costs, helps to keep development on track, and mitigates the negative effects of distance in distributed settings. This research aims to increase the individuals'motivation to write documentation by means of reputation. The CollabReview prototype is a web-based reputation system that analyzes artifacts of internal documentation to derive personal reputation scores. Developers making many good contributions will achieve higher reputation scores. These scores can then be employed to softly influence developer behavior, e.g. by incentivizing them to contribute to documentation with social rewards. No strict rule enforcement is necessary. © 2011 ACM.

Niemann K.,Fraunhofer Institute for Applied Information Technology
ACM International Conference Proceeding Series | Year: 2015

Data sets coming from the educational domain often suffer from sparsity. Hence, they might comprise potentially use-ful learning objects that are not findable by the users. In order to address this problem, we present a new way to auto-matically assign tags and classifications to learning objects offered by educational web portals that is solely based on the objects' usage. © Copyright 2015 ACM.

Wulf V.,Fraunhofer Institute for Applied Information Technology | Rohde M.,University of Siegen | Pipek V.,University of Siegen | Stevens G.,University of Siegen
Proceedings of the ACM Conference on Computer Supported Cooperative Work, CSCW | Year: 2011

Information and communications technology (ICT) pervades most aspects of our lives and changes everyday's practices in work and leisure time. When designing innovative ICTs, we need to engage with given practices, institutional arrangements, and technological infrastructures. We describe the research framework used at the University of Siegen. It is based on a collection of design case studies in particular fields of practice and identifies cross-cutting issues to compare and aggregate insights between these cases. To illustrate this framework, we describe our research activities and discuss three themes which became important in different design case studies. Copyright 2011 ACM.

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