Search (2 results, page 1 of 1)

  • × author_ss:"Schaer, P."
  • × theme_ss:"Semantische Interoperabilität"
  • × type_ss:"a"
  1. Posch, L.; Schaer, P.; Bleier, A.; Strohmaier, M.: ¬A system for probabilistic linking of thesauri and classification systems (2015) 0.00 
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  2. Mayr, P.; Schaer, P.; Mutschke, P.: ¬A science model driven retrieval prototype (2011) 0.00 
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    Abstract
    This paper is about a better understanding of the structure and dynamics of science and the usage of these insights for compensating the typical problems that arises in metadata-driven Digital Libraries. Three science model driven retrieval services are presented: co-word analysis based query expansion, re-ranking via Bradfordizing and author centrality. The services are evaluated with relevance assessments from which two important implications emerge: (1) precision values of the retrieval services are the same or better than the tf-idf retrieval baseline and (2) each service retrieved a disjoint set of documents. The different services each favor quite other - but still relevant - documents than pure term-frequency based rankings. The proposed models and derived retrieval services therefore open up new viewpoints on the scientific knowledge space and provide an alternative framework to structure scholarly information systems.

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