Wolfgang G. Stock

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ion Levels of Tags, Prototypes, and Cognitive Reference Points User-generated tags can be located on different levels of abstraction. In empirical psychological studies, Eleanor Rosch and her colleagues (Mervis & Rosch, 1981; Rosch, 1975a; Rosch, 1975b; Rosch & Mervis, 1975; Rosch, Mervis, Gray, Johnson, & Boyes-Braem, 1976) could show that there are three(More)
Purpose – The aim of this paper is to explore the relationship between practitioners and academics in scholarly communication in library and information science (LIS) journals. Design/methodology/approach – The research is based on a reader survey, a citation analysis and an editor survey. The reader survey identifies both differences in journal rankings(More)
Concept-based information retrieval and knowledge representation are in need of a theory of concepts and semantic relations. Guidelines for the construction and maintenance of knowledge organization systems (KOS) (such as ANSI/NISO Z39.19-2005 in the U.S.A. or DIN 2331:1980 in Germany) do not consider results of concept theory and theory of relations to the(More)
Folksonomies complete the methods of indexing scientific documents. Now scientists in their function as readers may play an active role in science communication as well, since they can tag documents with terms taken from their professional or personal environment. Folksonomies allow the indexing of documents by everyone without following any rules. Besides(More)
Some content in multimedia resources can depict or evoke certain emotions in users. The aim of Emotional Information Retrieval (EmIR) and of our research is to identify knowledge about emotional-laden documents and to use these findings in a new kind of World Wide Web information service that allows users to search and browse by emotion. Our prototype,(More)
The first of these directs readers to the source of knowledge that have been variously drawn upon in the particular work or are held to be otherwise relevant. . . . However . . . citations are not only essential bibliographic aids for scientists and scholars concerned to assess data and knowledge claims in the citing text or to retrieve further apt(More)
The paper presents our design of a next generation information retrieval system based on tag co-occurrences and subsequent clustering. We help users getting access to digital data through information visualization in the form of tag clusters. Current problems like the absence of interactivity and semantics between tags or the difficulty of adding additional(More)
There are at least three possible ways that documents are distributed by relevance: informetric (power law), inverse logistic, and dichotomous. The nature of the type of distribution has implications for the construction of relevance ranking algorithms for search engines, for automated (blind) relevance feedback, for user behavior when using Web search(More)
After modeling expert user needs with regard to intellectual property information, we analyze and compare the main providers in this specific information area (Thomson DIALOG, Esp@cenet by the European Patent Office, Questel-Orbit, and STN International) in terms of system content and system functionality. The key question is whether the main providers are(More)