Browsing by Author "Koch, Michael"
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- Text DocumentAugmenting Recommender Systems by Embedding Interfaces into Practices(Proceedings of the 1999 ACM International Conference on Supporting Group Work, 1999) Grasso, Antonietta; Koch, Michael; Rancati, AlessandroAutomated collaborative filtering systems promote the creation of a meta-layer of information, which describes users' evaluations of the quality and relevance of information items like scientific papers, books, and movies. A rich meta-layer is required, in order to elaborate statistically good predictions of the interest of the information items; the number of users' contributing to the feedback is a vital aspect for these systems to produce good prediction quality. The work presented here, first analyses the issues around recommendation collection then proposes a set of design principles aimed at improving the collection of recommendations. Finally, it presents how these principles have been implemented in one real usage setting.
- Text DocumentCommunity support and identity management(ECSCW 2001: Proceedings of the Seventh European Conference on Computer Supported Cooperative Work, 2001) Koch, Michael; Wörndl, WolfgangComputer based community support systems can provide powerful support in direct exchange of information and in finding people for information exchange Such applications usually make use of information about the user (user profile information) for personalization and for supporting contact management As in real life, a user will interact with different communities (community support applications) hosted by different providers With the current approach users have to provide and update information about their identity and interests for each community independently That results in cold-start problems with new community support applications and in inconvenience for the user In this paper we discuss user-centric identity management for community support applications and concentrate on a platform for using user profiles in more than one application We also propose mechanisms to address privacy issues in this framework
- Text DocumentCommunity Support in Universities - The Drehscheibe Project(Communities and Technologies: Proceedings of the First International Conference on Communities and Technologies 2003, 2003) Koch, MichaelCommunity support systems (community platforms) that are providing a rich communication medium for work or interest groups are gaining more and more attention in application areas ranging from leisure support and customer support to knowledge management. One of these application areas is the support of teaching and research activities in universities. In this article we present a community support system we have been developing and using for seven years in different university departments. In contrast to other work on community support for universities the system does not focus on lecture support or on knowledge management alone, but provides a generic communication and matchmaking medium. We will present the basic functionality of the system and elaborate into some observations we have made in the usage period.
- Journal ArticleDesign issues and model for a distributed multi-user editor(Computer Supported Cooperative Work (CSCW): Vol. 3, No. 3-4, 1995) Koch, MichaelThe collaborative editing of documents is a very common task nowadays. Writing groups are often distributed over many locations because of the globalization of organizations and the increasing interdisciplinarity of tasks. Since many writers already use computers for their jobs, providing computer support for the collaborative writing process has been identified as an important goal. Numerous tools for computer supported collaborative writing have already emerged but in most cases have not come into widespread usage. In this article the requirements of users for a collaborative editor are analyzed. Providing as much flexibility as possible to the users is identified as a basic need. According to the requirements summary a model for a group editing environment is presented. The model covers cooperative work in local and wide area networks using synchronous and asynchronous cooperation. Finally, an application of the model is presented in the form of the multi-user editing environment Iris .
- Conference PosterDesigning IT support for co-located synchronous innovation workshops(Proceedings of 15th European Conference on Computer-Supported Cooperative Work - Panels, Posters and Demos, 2017) Schön, Sabine; Koch, MichaelThe main goal of our research is to capture usage barriers and benefits of supporting synchronous innovation workshops, and then to design and evaluate a solution that addresses the barriers and raises the benefits. For capturing perceived usage barriers and benefits we conducted an interview study with meeting facilitators. The solution we designed from these requirements is based on a mobile phone app to capture results from paper posters and post-its, and to import these in an electronic workspace for presentation and further work. An evaluation of the solution in a real-world setting shows that the chosen balance of IT support and work with physical artefacts can provide a robust solution providing benefit to all.
- Text DocumentFunctions of Social Networking Services(From CSCW to Web 2.0: European Developments in Collaborative Design Selected Papers from COOP08, 2008) Richter, Alexander; Koch, MichaelSocial Networking Services (SNS) are the fastest growing type of social software – both in the Internet and in company-wide Intranets. Due to the fact that SNS have emerged just recently and the development speed of the services is enormous, there exist large gaps in research about this type of service. For example, so far there has been no attempt to identify and categorize the basic functionalities of SNS. This is the goal of this contribution. Six groups of functionalities for SNS are proposed and their categorization is motivated. The identification of a distinct set of SNS functions will facilitate the modularization and integration of different social network applications.
- Test/Journal ArticleInterview with Jonathan Grudin on ‘‘Computer-Supported Cooperative Work and Social Computing’’(Business & Information Systems Engineering, Vol. 57, 2015) Koch, Michael; Schwabe, GerhardJonathan Grudin is a Principal Researcher at Microsoft Research in the fields of Human–Computer Interaction (HCI) and Computer-Supported Cooperative Work (CSCW). Grudin is a pioneer of the field of CSCW and one of its most prolific contributors. He was awarded the inaugural CSCW Lasting Impact Award in 2014 on the basis of this work. Prior to working at Microsoft Research, Grudin was a Professor of Information and Computer Science at the University of California, Irvine from 1991 to 1998. His career has also spanned numerous institutions. He worked at Wang Laboratories as a Computer Programmer (1974–1975 and 1983–1986). He was a Visiting Scientist in the Psychology and Artificial Intelligence Laboratories at MIT (1976–1979) and then a NATO Postdoctoral Fellow at the Medical Research Council’s Applied Psychology Unit (now known as the Cognition and Brain Sciences Unit (1982–1983). He spent from 1986–1989 at the Microelectronics and Computer Technology Corporation before taking a series of faculty positions (including visiting professorships) at Aarhus University (1989–1991), the University of California, Irvine (1991–1998), Keio University (1995), and the University of Oslo (1997).
- Test/Journal ArticleInterviews with Volker Wulf and Myriam Lewkowicz on ‘‘The European Tradition of CSCW’’(Business & Information Systems Engineering, Vol. 60, 2018) Richter, Alexander; Koch, MichaelIn 2015, BISE featured a special issue on “CSCW & Social Computing”. Whereas the special issue gave a global view of the field, the featured interviews with Jonathan Grudin and Jay Nunamaker were mainly focused on the American perspective on the field. However, there is a European research tradition which is rather practice based and tries to understand and support cooperation in the real world by means of IT artifacts, in teams, organizations, or communities. This tradition which nowadays spans the whole world is institutionally represented by the European Society for Socially Embedded Technologies (EUSSET), which organizes the annual “European Conference on Computer-Supported Cooperative Work” (ECSCW), the biannual Conference “Communities & Technologies” (C&T), and is responsible for the Journal on CSCW (JCSCW). In this issue we want to enrich the material presented in the 2015 special issue with interviews with the current and the future chairs of EUSSET – about the past and the future of the European tradition of CSCW.
- Conference PaperThe Novelty Effect in Large Display Deployments – Experiences and Lessons-Learned for Evaluating Prototypes(Proceedings of 16th European Conference on Computer-Supported Cooperative Work - Exploratory Papers, 2018) Koch, Michael; von Luck, Kai; Schwarzer, Jan; Draheim, SusanneThis exploratory paper addresses the novelty effect in large display field deployments by combining findings from both the existing body of knowledge and our own research. We found that the novelty effect is prevalently present on two occasions: (a) immediately after a new system is deployed in a new environment, and (b) in reoccurring situations, when changes are made to an existing system. Both instances share similarities such as a system’s higher usage during a particular time frame. However, we also observed that their individual reasons to occur are multifaceted. The present work’s main contribution is twofold. Firstly, the paper outlines related literature regarding the novelty effect, particularly in CSCW and HCI. Secondly, the paper illustrates the effect’s complex nature and suggests explicit means that should be considered in related research endeavors.
- Conference PaperTowards Methodological Guidance for Longitudinal Ambient Display In Situ Research(Proceedings of 17th European Conference on Computer-Supported Cooperative Work, 2019) Schwarzer, Jan; von Luck, Kai; Draheim, Susanne; Koch, MichaelField deployment research represents a promising way for understanding how technology is utilised in the wild. It gained relevance in both HCI and CSCW, and allows, for instance, to investigate how technology is socially embedded in real world contexts. However, such enterprises are considered complex in nature due to continuously changing conditions such as practices surrounding technology. In situ research has yet to gain momentum, leaving researchers with little theoretical guidance. In response, the present paper proposes the application of classic grounded theory in longitudinal field deployment studies for ambient displays. We argue that the methodology is a valuable choice in cop- ing with the challenges surrounding in situ evaluations and simultaneously ensures methodological rigour. This paper contributes a practical systematisation of the methodology’s two core concepts, namely constant comparison and theoretical sampling. It sheds light on their exemplary application in investigating quantitative interaction data in the early stages of our ongoing research. With that, we hope to encourage future research and provide a first stepping stone towards developing methodological guidance for evaluations of ambient displays in the wild.