Search (1 results, page 1 of 1)

  • × author_ss:"Srinivasan, P."
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  • × year_i:[1990 TO 2000}
  1. Srinivasan, P.: Query expansion and MEDLINE (1996) 0.01
    0.0068851607 = product of:
      0.017212901 = sum of:
        0.010897844 = weight(_text_:a in 8453) [ClassicSimilarity], result of:
          0.010897844 = score(doc=8453,freq=8.0), product of:
            0.053464882 = queryWeight, product of:
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.046368346 = queryNorm
            0.20383182 = fieldWeight in 8453, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              1.153047 = idf(docFreq=37942, maxDocs=44218)
              0.0625 = fieldNorm(doc=8453)
        0.006315058 = product of:
          0.012630116 = sum of:
            0.012630116 = weight(_text_:information in 8453) [ClassicSimilarity], result of:
              0.012630116 = score(doc=8453,freq=2.0), product of:
                0.08139861 = queryWeight, product of:
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.046368346 = queryNorm
                0.1551638 = fieldWeight in 8453, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.7554779 = idf(docFreq=20772, maxDocs=44218)
                  0.0625 = fieldNorm(doc=8453)
          0.5 = coord(1/2)
      0.4 = coord(2/5)
    
    Abstract
    Evaluates the retrieval effectiveness of query expansion strategies on a test collection of the medical database MEDLINE using Cornell University's SMART retrieval system. Tests 3 expansion strategies for their ability to identify appropriate MeSH terms for user queries. Compares retrieval effectiveness using the original unexpanded and the alternative expanded user queries on a collection of 75 queries and 2.334 Medline citations. Recommends query expansions using retrieval feedback for adding MeSH search terms to a user's initial query
    Source
    Information processing and management. 32(1996) no.4, S.431-443
    Type
    a