EUCOS, which stands for EUMETNET Composite Observing System, is a EUMETNET programme whose main objective is a central management of surface based operational observations on a European-wide scale serving the needs of regional scale NWP.... more
EUCOS, which stands for EUMETNET Composite Observing System, is a EUMETNET programme whose main objective is a central management of surface based operational observations on a European-wide scale serving the needs of regional scale NWP. EUMETNET is a consortium of currently 26 national meteorological services in Europe that provides a framework for different operational and developmental co-operative programmes between the
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For a scientific researcher it is more and more vital to find relevant publications with their correct bibliographical data, not only for accurate citations but particularly for getting further information about their current research... more
For a scientific researcher it is more and more vital to find relevant publications with their correct bibliographical data, not only for accurate citations but particularly for getting further information about their current research topic. This paper describes a new approach to ...
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Information retrieval (IR) systems utilize user feedback for generating optimal queries with respect to a particular in- formation need. However the methods that have been de- veloped in IR for generating these queries do not memo- rize... more
Information retrieval (IR) systems utilize user feedback for generating optimal queries with respect to a particular in- formation need. However the methods that have been de- veloped in IR for generating these queries do not memo- rize information gathered from previous search processes, and hence can not use such information in new search pro- cesses. Thus each new search process
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Quality management is, not only for digital libraries, an important task in which many dimensions and different aspects have to be considered. The following paper gives a short overview on DBLP in which the data acquisition and... more
Quality management is, not only for digital libraries, an important task in which many dimensions and different aspects have to be considered. The following paper gives a short overview on DBLP in which the data acquisition and maintenance process underlying DBLP is discussed from a quality point of view. The paper finishes with a new approach to identify erroneous person names.
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The accuracy of ad-hoc document retrieval systems has plateaued in the last few years. At DFKI, we are working on so-called collaborative information retrieval (CIR) systems which unintrusively learn from their users' search... more
The accuracy of ad-hoc document retrieval systems has plateaued in the last few years. At DFKI, we are working on so-called collaborative information retrieval (CIR) systems which unintrusively learn from their users' search processes. As a first step towards techniques, we focus on a restricted setting in CIR in which only old queries and correct answer documents to these queries are available for improving on a new query. For this restricted setting we propose three initial ap- proaches, called QSD, QLD, and TCL as well as combinations of these approaches with pseudo relevance feedback. The approaches are evaluated experimentally on standard Information Retrieval test collections. It turns out that in particular the hybrid approaches with pseudo relevance feedback give promising results. A bigger advantage of the proposed approaches is expected in real word test scenarios in which the overlap of user interests is larger than in our experimental set up.
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Abstract: Finding related publications and their correct bibliographical data is getting harder and harder due to the mass of unrequested information and the decreasing precision of many information providers. The DBLP Computer Science... more
Abstract: Finding related publications and their correct bibliographical data is getting harder and harder due to the mass of unrequested information and the decreasing precision of many information providers. The DBLP Computer Science Bibliography is a service used ...
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Abstract. The paper describes a set of approaches for representing and access-ing information within a semantically structured information portal, while offer-ing the possibility to integrate own information. It discusses research... more
Abstract. The paper describes a set of approaches for representing and access-ing information within a semantically structured information portal, while offer-ing the possibility to integrate own information. It discusses research performed within the project 'Semantic Methods ...