Search (4 results, page 1 of 1)

  • × author_ss:"Bollmann, P."
  • × year_i:[1980 TO 1990}
  1. Bollmann, P.: Probleme des Messens und Bewertens beim Information-Retrieval (1982) 0.01 
    0.00849658 = product of:
  0.03398632 = sum of:
    0.03398632 = weight(_text_:information in 427) [ClassicSimilarity], result of:
      0.03398632 = score(doc=427,freq=4.0), product of:
        0.08850355 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.050415643 = queryNorm
        0.3840108 = fieldWeight in 427, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.109375 = fieldNorm(doc=427)
  0.25 = coord(1/4)
    Source
    Deutscher Dokumentartag 1981, Mainz, 5.-8.10.1981: Kleincomputer in Information und Dokumentation. Bearb.: H. Strohl-Goebel
  2. Bollmann, P.; Cherniavsky, V.S.: Probleme der Bewertung von Information-Retrieval-Systemen (1980) 0.01 
    0.005946367 = product of:
  0.023785468 = sum of:
    0.023785468 = weight(_text_:information in 5495) [ClassicSimilarity], result of:
      0.023785468 = score(doc=5495,freq=6.0), product of:
        0.08850355 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.050415643 = queryNorm
        0.2687516 = fieldWeight in 5495, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=5495)
  0.25 = coord(1/4)
    Abstract
    In diesem Beitrag werden Probleme des Messens und Bewertens bei Information Retrieval Systemen behandelt. Schwierigkeiten beim Messen, insbesondere das Problem der Sinnvollheit, werden an Beispielen erläutert. Es werden Methoden zur Analyse der Probleme vorgeschlagen und auf bekannte Maße wie Recall, Fallout, Precision, Recall-Fallout-Graph und Recall-Precision-Graph angewendet. Dabei werden implizit Methoden der Meßtheorie benutzt
    Source
    Datenbasen, Datenbanken, Netzwerke: Praxis des Information Retrieval. Hrsg.: R. Kuhlen. Bd.3: Nutzung und Bewertung von Retrievalsystemen
  3. Bollmann, P.; Konrad, E.; Richardt, B.; Zuse, H.: Experimentelle Überprüfung der Clusterhypothese mit dem Information-Retrieval-Methodebanksystem FAKYR (1983) 0.01 
    0.005149705 = product of:
  0.02059882 = sum of:
    0.02059882 = weight(_text_:information in 444) [ClassicSimilarity], result of:
      0.02059882 = score(doc=444,freq=2.0), product of:
        0.08850355 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.050415643 = queryNorm
        0.23274569 = fieldWeight in 444, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.09375 = fieldNorm(doc=444)
  0.25 = coord(1/4)
  4. Raghavan, V.V.; Jung, G.S.; Bollmann, P.: ¬A critical investigation of recall and precision as measures of retrieval system performance (1989) 0.00 
    0.004855188 = product of:
  0.019420752 = sum of:
    0.019420752 = weight(_text_:information in 3606) [ClassicSimilarity], result of:
      0.019420752 = score(doc=3606,freq=4.0), product of:
        0.08850355 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.050415643 = queryNorm
        0.21943474 = fieldWeight in 3606, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=3606)
  0.25 = coord(1/4)
    Abstract
    Recall and precision are often used to evaluate the effectiveness of information retrieval systems. However, when the retrieval results are weakly ordered, in the sense that several documents have an identical retrieval status value with respect to a query, some prohabilistic notion of precision has to be introduced. Provides a comparative analysis of methods available for defining precision in a prohabilistic sense and to promote a better understanding of the various issues involved in retrieval performance evaluation.
    Source
    ACM transactions on information systems. 7(1989) no.3, S.205-229

Authors

Languages