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ddc_ss:"025.04 / dc23" 1

TREC: experiment and evaluation in information retrieval (2005) 9.62

9.617446 = weight(ddc_ss:025.04 / dc22 in 636) [ClassicSimilarity], result of:
  9.617446 = fieldWeight in 636, product of:
    1.0 = tf(freq=1.0), with freq of:
      1.0 = termFreq=1.0
    9.617446 = idf(docFreq=7, maxDocs=44218)
    1.0 = fieldNorm(doc=636)

Classification: 025.04 / dc22
Ddc: 025.04 / dc22