Search (2 results, page 1 of 1)

  • × author_ss:"Ding, W."
  • × author_ss:"Marchionini, G."
  • × type_ss:"a"
  1. Ding, W.; Marchionini, G.: ¬A comparative study of Web search service performance (1996) 0.00
    0.0019442824 = product of:
      0.0038885649 = sum of:
        0.0038885649 = product of:
          0.0077771298 = sum of:
            0.0077771298 = weight(_text_:a in 4807) [ClassicSimilarity], result of:
              0.0077771298 = score(doc=4807,freq=12.0), product of:
                0.041537512 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.036024127 = queryNorm
                0.18723148 = fieldWeight in 4807, product of:
                  3.4641016 = tf(freq=12.0), with freq of:
                    12.0 = termFreq=12.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046875 = fieldNorm(doc=4807)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Investigates the current state of search services conducted by comparing 3 popular WWW based search services: InfoSeek, Lycos and OpenText. A taxonomy of service features was first created to do a descriptive comparison. A set of 5 questions were used to conduct searches with the 3 services. Each service offered some advantage for specific queries although Lycos and OpenText showed better results for the different precision metrics used in this limited study. There was a low result overlap among the 3 services. None of the services provide good output control for users. Makes recommendations for improvements in display, indexing and updating
    Type
    a
  2. Ding, W.; Soergel, D.; Marchionini, G.: Performance of visual, verbal, and combined video surrogates (1999) 0.00
    9.260417E-4 = product of:
      0.0018520834 = sum of:
        0.0018520834 = product of:
          0.0037041667 = sum of:
            0.0037041667 = weight(_text_:a in 6679) [ClassicSimilarity], result of:
              0.0037041667 = score(doc=6679,freq=2.0), product of:
                0.041537512 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.036024127 = queryNorm
                0.089176424 = fieldWeight in 6679, product of:
                  1.4142135 = tf(freq=2.0), with freq of:
                    2.0 = termFreq=2.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=6679)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Type
    a