Auflistung nach Autor:in "Groh, Georg"
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- KonferenzbeitragAnsätze zur softwareunterstützten Kompetenzentwicklung in innovationsgetriebenen Berufen der Digitalen Wirtschaft(Workshop Gemeinschaften in Neuen Medien (GeNeMe) 2008, 2008) Zeini, Sam; Scholl, Hartmut; Malzahn, Nils; Hoppe, H. Ulrich; Hafkesbrink, Joachim; Mill, Ulrich; Groh, Georg; Schauf, Thomas; Westermaier, Roland; Pfeiffer, Oliver
- KonferenzbeitragEnhancing the meta structure of weblogs(Mensch und Computer 2006: Mensch und Computer im Strukturwandel, 2006) Reich, Jochen; Toni, Karlheinz; Groh, GeorgWeblogging as a concept for publishing personal lifestyle as well as knowledge driven contents has gained popularity in the last years. In this paper we outline the advantages of weblogging and tool driven approaches to information gathering. We will introduce a solution to combine the advantages of both approaches by assigning a meta structure on weblogs.
- WorkshopbeitragGroup Motivation for Social Games(Mensch und Computer 2017 - Tagungsband, 2017) Sailer, Michael; Schäfer, Hanna; Groh, GeorgThe social aspect plays an important role in the user's motivation in many applications. In this paper design principles for the combination of cooperative and competitive game elements and reducing effects of the social loafing phenomenon are proposed. The concepts were evaluated in a focus group interview and a two-week study where the participants played the prototype of the educational serious game JungleCrowd, which attempts to tackle the issue of deforestation. The results supported the concepts of parallel cooperative teams to add a competitive component and introducing a visible measure for a user's unselfishness to encourage cooperation.
- KonferenzbeitragInteractive Visualization of Dynamic Social Networks(INFORMATIK 2008. Beherrschbare Systeme - dank Informatik. Band 2, 2008) Hanstein, Holger; Groh, GeorgUnderstanding patterns and structural changes in an evolving social net- work at first glance and performing hands-on exploration of actors’ relationships and attributes are the primary goals of the dynamic social network visualizer “DySoN” (Dynamic Social Networks) presented in this work. A lot of work has been done over the past few years to find visual metaphors for changes in network structures, partly showing how streaming event data of social inter- actions could be visualized by an interactive three-dimensional model of interpolated ”tubes”, representing dynamic social proximity within a given set of actors during a given time period by using three dimensions of temporal information mapping: spatial density, color and size. Using the example of a collaboration network of musicians, “DySoN” takes event data and additional actor attributes from a relational database, calculates a virtual socio-matrix with proximity relations from it, builds a temporal graph object, applies a force-directed graph layout method and constructs a NURBS model which is then displayed as Java3D geometry, complemented by a two-dimensional section view and a filterable table view of actors and attributes.
- KonferenzbeitragMarket Systems as a Source of Individual Contributive Social Capital Scores(Mensch und Computer 2019 - Tagungsband, 2019) Schams, Sebastian; Hauffa, Jan; Schmidt, Maximilian; Groh, GeorgIn online communication, it is often difficult to judge if an unknown person is competent, telling the truth or interested in honestly helping others. This leads to mistrust and social phenomena like echo chambers, misinformation campaigns, and fake news. Creating transparency by introducing contributive social capital (CSC), a metric encompassing the competence, trustworthiness, and social responsibility of a user, could alleviate this problem. In this paper, we investigate the utility of social capital market systems as information sources for the assessment of CSC. We conceptualize a market system that assigns CSC scores to its participants and continuously updates these scores according to market transactions. To test this system, we ran an experiment with 165 participants over the course of nine weeks. Market simulations were used for evaluating the system on a larger scale. The results indicate that market systems can be useful for the assessment of user characteristics like CSC. Social capital markets can be used on their own or as part of a larger system that integrates information from social networking platforms and personal or institutional endorsements.
- KonferenzbeitragMobile communities – extending online communities into the real world(Mobile and Collaborative Business 2002, Proceedings zur Teilkonferenz der Multikonferenz Wirtschaftsinformatik 2002, 2002) Hillebrand, Christian; Groh, Georg; Koch, MichaelCommunities offer a context for people to meet, communicate and collaborate. Tools to support communities usually provide a communication medium and functionalities to find communication partners. Thereby, they strengthen existing communities or enable completely new (virtual) communities. In this paper we briefly present some ideas towards the extension of community support to mobile environments from the ongoing project COSMOS1. The objectives of COSMOS are the development of new technologies and concepts for this support. We discuss ideas for mobile community support services, focus on a community centric view of positioning services, and lay out a plan for future work.
- KonferenzbeitragRealisierung eines dezentralen Recommender Systems für PDAs(Mobile und Ubiquitäre Informationssysteme – Entwicklung, Implementierung und Anwendung, 2009) Mühe, Henrik; Wörndl, Wolfgang; Groh, GeorgDezentrale Recommender Systeme erscheinen in mobilen Szenarien sinnvoll, wurden allerdings bisher noch kaum untersucht und erprobt. Wir haben daher in diesem Projekt einen Ansatz zur Empfehlung von Gegenständen (Items) auf Personal Digital Assistants (PDAs) realisiert, der ein gemeinsames Display zusätzlich zu den PDAs einbindet. Dabei werden Bewertungsvektoren zwischen den PDAs ausgetauscht, lokale Matrizen der Item-Ähnlichkeit errechnet und zur Empfehlung ausgewertet. Unsere Neuerungen gegenüber existierenden Ansätzen betreffen insbesondere die Erweiterbarkeit des Modells und die Optimierung des auf einem mobilen Gerät erforderlichen Speicherbedarfs. Die Tauglichkeit unseres Ansatzes wurde in einem kleinen Anwendertest evaluiert. Des Weiteren wurde die Skalierbarkeit mit einem Standard-Datensatz im Bereich Recommender Systeme nachgewiesen.