Search (8 results, page 1 of 1)

  • × author_ss:"Lewandowski, D."
  1. Lewandowski, D.: Wie "Next Generation Search Systems" die Suche auf eine neue Ebene heben und die Informationswelt verändern (2017) 0.02
    0.018862877 = product of:
      0.037725754 = sum of:
        0.037725754 = product of:
          0.07545151 = sum of:
            0.07545151 = weight(_text_:systems in 3611) [ClassicSimilarity], result of:
              0.07545151 = score(doc=3611,freq=6.0), product of:
                0.16037072 = queryWeight, product of:
                  3.0731742 = idf(docFreq=5561, maxDocs=44218)
                  0.052184064 = queryNorm
                0.4704818 = fieldWeight in 3611, product of:
                  2.4494898 = tf(freq=6.0), with freq of:
                    6.0 = termFreq=6.0
                  3.0731742 = idf(docFreq=5561, maxDocs=44218)
                  0.0625 = fieldNorm(doc=3611)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Suchmaschinen befinden sich einerseits in einem beständigen Wandel. Andererseits gibt es immer wieder Entwicklungen, die die Suche "auf eine neue Ebene" heben. Eine solche Entwicklung, die wir zurzeit erleben, wird unter dem Label "Next Generation Search Systems" geführt. Der Begriff fasst die Veränderungen durch eine Vielfalt von Geräten und Eingabemöglichkeiten, die Verfügbarkeit von Verhaltensdaten en masse und den Wandel von Dokumenten zu Antworten zusammen.
    Footnote
    Bezug zum Buch: White, R.: Interactions with search systems. New York ; Cambridge University Press ; 2016.
  2. Lewandowski, D.: Alles nur noch Google? : Entwicklungen im Bereich der WWW-Suchmaschinen (2002) 0.01
    0.014140441 = product of:
      0.028280882 = sum of:
        0.028280882 = product of:
          0.056561764 = sum of:
            0.056561764 = weight(_text_:22 in 997) [ClassicSimilarity], result of:
              0.056561764 = score(doc=997,freq=2.0), product of:
                0.1827397 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.052184064 = queryNorm
                0.30952093 = fieldWeight in 997, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=997)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    29. 9.2002 18:49:22
  3. Lewandowski, D.: Abfragesprachen und erweiterte Funktionen von WWW-Suchmaschinen (2004) 0.01
    0.014140441 = product of:
      0.028280882 = sum of:
        0.028280882 = product of:
          0.056561764 = sum of:
            0.056561764 = weight(_text_:22 in 2314) [ClassicSimilarity], result of:
              0.056561764 = score(doc=2314,freq=2.0), product of:
                0.1827397 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.052184064 = queryNorm
                0.30952093 = fieldWeight in 2314, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=2314)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    28.11.2004 13:11:22
  4. Lewandowski, D.: Query understanding (2011) 0.01
    0.014140441 = product of:
      0.028280882 = sum of:
        0.028280882 = product of:
          0.056561764 = sum of:
            0.056561764 = weight(_text_:22 in 344) [ClassicSimilarity], result of:
              0.056561764 = score(doc=344,freq=2.0), product of:
                0.1827397 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.052184064 = queryNorm
                0.30952093 = fieldWeight in 344, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0625 = fieldNorm(doc=344)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    18. 9.2018 18:22:18
  5. Behnert, C.; Lewandowski, D.: ¬A framework for designing retrieval effectiveness studies of library information systems using human relevance assessments (2017) 0.01
    0.013613109 = product of:
      0.027226217 = sum of:
        0.027226217 = product of:
          0.054452434 = sum of:
            0.054452434 = weight(_text_:systems in 3700) [ClassicSimilarity], result of:
              0.054452434 = score(doc=3700,freq=8.0), product of:
                0.16037072 = queryWeight, product of:
                  3.0731742 = idf(docFreq=5561, maxDocs=44218)
                  0.052184064 = queryNorm
                0.339541 = fieldWeight in 3700, product of:
                  2.828427 = tf(freq=8.0), with freq of:
                    8.0 = termFreq=8.0
                  3.0731742 = idf(docFreq=5561, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=3700)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Purpose This paper demonstrates how to apply traditional information retrieval evaluation methods based on standards from the Text REtrieval Conference (TREC) and web search evaluation to all types of modern library information systems including online public access catalogs, discovery systems, and digital libraries that provide web search features to gather information from heterogeneous sources. Design/methodology/approach We apply conventional procedures from information retrieval evaluation to the library information system context considering the specific characteristics of modern library materials. Findings We introduce a framework consisting of five parts: (1) search queries, (2) search results, (3) assessors, (4) testing, and (5) data analysis. We show how to deal with comparability problems resulting from diverse document types, e.g., electronic articles vs. printed monographs and what issues need to be considered for retrieval tests in the library context. Practical implications The framework can be used as a guideline for conducting retrieval effectiveness studies in the library context. Originality/value Although a considerable amount of research has been done on information retrieval evaluation, and standards for conducting retrieval effectiveness studies do exist, to our knowledge this is the first attempt to provide a systematic framework for evaluating the retrieval effectiveness of twenty-first-century library information systems. We demonstrate which issues must be considered and what decisions must be made by researchers prior to a retrieval test.
  6. Lewandowski, D.: ¬Die Macht der Suchmaschinen und ihr Einfluss auf unsere Entscheidungen (2014) 0.01
    0.010605331 = product of:
      0.021210661 = sum of:
        0.021210661 = product of:
          0.042421322 = sum of:
            0.042421322 = weight(_text_:22 in 1491) [ClassicSimilarity], result of:
              0.042421322 = score(doc=1491,freq=2.0), product of:
                0.1827397 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.052184064 = queryNorm
                0.23214069 = fieldWeight in 1491, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.046875 = fieldNorm(doc=1491)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    22. 9.2014 18:54:11
  7. Lewandowski, D.; Spree, U.: Ranking of Wikipedia articles in search engines revisited : fair ranking for reasonable quality? (2011) 0.01
    0.008837775 = product of:
      0.01767555 = sum of:
        0.01767555 = product of:
          0.0353511 = sum of:
            0.0353511 = weight(_text_:22 in 444) [ClassicSimilarity], result of:
              0.0353511 = score(doc=444,freq=2.0), product of:
                0.1827397 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.052184064 = queryNorm
                0.19345059 = fieldWeight in 444, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=444)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    30. 9.2012 19:27:22
  8. Lewandowski, D.; Sünkler, S.: What does Google recommend when you want to compare insurance offerings? (2019) 0.01
    0.008837775 = product of:
      0.01767555 = sum of:
        0.01767555 = product of:
          0.0353511 = sum of:
            0.0353511 = weight(_text_:22 in 5288) [ClassicSimilarity], result of:
              0.0353511 = score(doc=5288,freq=2.0), product of:
                0.1827397 = queryWeight, product of:
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.052184064 = queryNorm
                0.19345059 = fieldWeight in 5288, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  3.5018296 = idf(docFreq=3622, maxDocs=44218)
                  0.0390625 = fieldNorm(doc=5288)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Date
    20. 1.2015 18:30:22

Languages

Types