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  • × author_ss:"Bollmann-Sdorra, P."
  • × year_i:[1990 TO 2000}
  1. Bollmann-Sdorra, P.; Raghavan, V.V.: On the delusiveness of adopting a common space for modelling IR objects : are queries documents? (1993) 0.04 
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    Abstract
    Many authors, who adopt the vector space model, take the view that documents, terms, queries, etc., are all elements within the same (conceptual) space. This view seems to be a natural one, given that documents and queries have the same vector notation. We show, however, that the structure of the query space can be very different from that of the document space. To this end, concepts like preference, similarity, term independence, and linearity, both in the document space and in the query space, are discussed. Our conclusion is that a more realistic and complete view of IR is obtained if we do not consider documents and queries to be elements of the same space. This conclusion implies that certain restrictions usually applied in the design of an IR system are obviated. For example, the retrieval function need not be interpreted as a similarity measure
  2. Bollmann-Sdorra, P.: Probleme der Validität bei Retrievaltests (1990) 0.02 
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  3. Bollmann-Sdorra, P.; Raghavan, V.V.: On the necessity of term dependence in a query space for weighted retrieval (1998) 0.01 
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