Search (1 results, page 1 of 1)

  • × author_ss:"Bar-Ilan, J."
  • × theme_ss:"Retrievalstudien"
  • × theme_ss:"Suchmaschinen"
  1. Bar-Ilan, J.: Methods for measuring search engine performance over time (2002) 0.03
    0.025550429 = product of:
      0.102201715 = sum of:
        0.102201715 = weight(_text_:engines in 305) [ClassicSimilarity], result of:
          0.102201715 = score(doc=305,freq=2.0), product of:
            0.22757743 = queryWeight, product of:
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.04479146 = queryNorm
            0.44908544 = fieldWeight in 305, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.080822 = idf(docFreq=746, maxDocs=44218)
              0.0625 = fieldNorm(doc=305)
      0.25 = coord(1/4)
    
    Abstract
    This study introduces methods for evaluating search engine performance over a time period. Several measures are defined, which as a whole describe search engine functionality over time. The necessary setup for such studies is described, and the use of these measures is illustrated through a specific example. The set of measures introduced here may serve as a guideline for the search engines for testing and improving their functionality. We recommend setting up a standard suite of measures for evaluating search engine performance.