Auflistung nach Autor:in "Welsch, Martin"
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- KonferenzbeitragAdaptive Portals: Adapting and Recommending Content and Expertise(16th Workshop on Adaptivity and User Modeling in Interactive Systems, 2008) Nauerz, Andreas; Bakalov, Fedor; König-Ries, Birgitta; Welsch, MartinToday, Portals provide users with a central point of access to companywide information. Initially they focused on presenting the most valuable and widely used information to users providing them with quick and efficient information access. But the amount of information accessible quickly grew and finding the right information became more and more complex and time consuming. In this paper, we illustrate options for adapting and recommending content based on user- and context models that reflect users’ interests and preferences and on annotations of resources provided by users. We additionally leverage the entire communitys’ interests, preferences and collective intelligence to perform group-based adaptation. We adapt a Portal’s structure (e.g. navigation) and provide recommendations to be able to reach content being of interest easier. We recommend background in- formation, experts and users with similar interests. We finally construct a Portal’s navigation structure entirely based on the communitys’ behavior. Our main concepts have been prototypically embedded within IBM’s WebSphere Portal.
- KonferenzbeitragA hybrid approach to identifying user interests in web portals(9th International Conference On Innovative Internet Community Systems I2CS 2018, 2009) Bakalov, Fedor; König-Ries, Birgitta; Nauerz, Andreas; Welsch, MartinWeb portals pioneered as one of the earliest adopters of personalization techniques to help users dealing with the problem of information overload. Nowadays they are extensively used as a single-point of access to the vast amount of resources available on the Web and in enterprise intranets. A number of researchers have been investigating the possibilities to enable portals to deliver the content in a highly-personalized manner in order to provide users with a quick and efficient access to the subset of resources relevant to their information needs. However, in order to achieve such a personalization effect, the portal needs accurate and up-to-date information about users, especially the information about their interests. In this paper, we describe a hybrid approach to identifying user interests in Web portals. In our approach, the portal is enabled to "learn" the user interests from the content of visited pages. In addition, it is empowered to provide users with an open access interface to their user models to let them explicitly specify their interests and, in case of incorrectly identified interests, outvote the portal.
- KonferenzbeitragLink Clouds and User-/Community-Driven Dynamic Interlinking of Resources(17th Workshop on Adaptivity and User Modeling in Interactive Systems, 2009) Nauerz, Andreas; Welsch, Martin; Bakalov, Fedor; König-Ries, BirgittaDuring the last years we have observed a shift in the way how content is added to web-based systems. Earlier, dedicated authors were responsible for adding content, today entire communities contribute. As a consequence these systems grow quickly and uncoordinated. New ways had to be found to organize and structure content. Tagging has become one of the most popular techniques to allow users (and entire user communities) to perform this structuring autonomously. But, not only because current tagging systems have their flipsides (e.g. synonyms and polysems lead to littered tag spaces making it difficult for users to find relevant content), we argue that tagging is sometimes an abstraction layer not necessarily needed. In many scenarios users just want to interlink content fragments (re- sources) with each other. In this paper we present an approach allowing users, i.e. the community, to collaboratively define relations between arbitrary content fragments. They can interlink any source with any target. We allow for personal interlinking of resources as well as collaborative interlinking. In the latter case we visualize, for each single resource, available interlinks in what we call link clouds, a concept comparable to tag clouds. We finally leverage the knowledge about the interlinks between resources’ for building personal (or community) navigation structures and for performing content recommendations. The concepts presented are being prototypically implemented within IBM’s WebSphere Portal and can be presented in a live demo at the work- shop.
- KonferenzbeitragMERCURY: User Centric Device and Service Processing(Mensch & Computer 2012 – Workshopband: interaktiv informiert – allgegenwärtig und allumfassend!?, 2012) Opasjumruskit, Kobkaew; Expósito, Jesús; König-Ries, Birgitta; Nauerz, Andreas; Welsch, MartinIn this paper, we present MERCURY, a platform for simple, user-centric integration and management of heterogeneous devices and services via a web-based interface. In contrast to existing approaches, MERCURY is geared towards non-IT-savvy end users. It enables these end users to easily interconnect devices, which can act as sensors or actuators, to model rules that trigger actions. Sets of rules allow users to model entire, often reoccurring, scenarios. Also, these must be user-centric and context adaptive. It shall thus enable users to take full advantage of the potential for support in everyday life such integration offers. Technically, our solution is based on Portal technology. We describe a tangible scenario to portray the steps a user will need to take to achieve the desired functionality.
- KonferenzbeitragMercury: user centric device and service processing(MMS 2012: Mobile und Ubiquitäre Informationssysteme, 2012) König-Ries, Birgitta; Opasjumruskit, Kobkaew; Nauerz, Andreas; Welsch, Martin
- KonferenzbeitragMERCURY: User Centric Device and Service Processing – Demo paper(ABIS 2012, 2012) Opasjumruskit, Kobkaew; Expósito, Jesús; König-Ries, Birgitta; Nauerz, Andreas; Welsch, MartinIn this paper, we present MERCURY, a platform for simple, user-centric integration and management of heterogeneous devices and services via a web-based interface. In contrast to existing approaches, MERCURY is geared towards non-IT-savvy end users. It enables these end users to easily interconnect devices, which can act as sensors or actuators, to model rules that trigger actions. Sets of rules allow users to model entire, often reoccurring, scenarios. Also, these must be user-centric and context adaptive. It shall thus enable users to take full advantage of the potential for support in everyday life such integration offers. Technically, our solution is based on Portal technology. We describe a tangible scenario to portray the steps a user will need to take to achieve the desired functionality.
- KonferenzbeitragNew Tagging Paradigms for Enhancing Collaboration in Web 2.0 Communities(17th Workshop on Adaptivity and User Modeling in Interactive Systems, 2009) Nauerz, Andreas; Brück, Matthias; Welsch, Martin; Bakalov, Fedor; König-Ries, BirgittaIn this paper we present new sophisticated tagging paradigms and their influence on users collaboration behavior and the construction of user– and context–models. We present paradigms like alien tagging which allows one user to apply tags for another user, reputation-based tagging which allows users’ expertise to influence tags’ weights, quantitative tagging which allows users to manually manipulate tags’ weights, anti tagging which allows users to specify ”negative tags”, tag voting to solve the tag space littering problem by e.g. allowing users to vote against tags, tag expiry which allows tags to have a lifetime, contextual tagging which allows tags to be associated to certain context profiles, and so forth and describe how these can be used to refine our models and to perform even more valuable adaptations or to issue more valuable. We also allow for mechanisms to follow users’ tagging ”trails” in order to learn from what they are tagging. All these techniques aim to provide the user with more advanced ways, to add, filter, group and view tags. The concepts presented are currently been prototypically implemented within IBMs WebSphere Portal and can be presented in a live demo at the workshop.