Search (5 results, page 1 of 1)

Blair, D.C.; Maron, M.E.: Full-text information retrieval : further analysis and clarification (1990) 0.00

0.0033653039 = product of:
  0.013461215 = sum of:
    0.013461215 = weight(_text_:information in 2046) [ClassicSimilarity], result of:
      0.013461215 = score(doc=2046,freq=4.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.21943474 = fieldWeight in 2046, 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=2046)
  0.25 = coord(1/4)

Source: Information processing and management. 26(1990), S.437-447

Blair, D.C.; Maron, M.E.: ¬An evaluation of retrieval effectiveness for a full-text document-retrieval system (1985) 0.00

0.0029745363 = product of:
  0.011898145 = sum of:
    0.011898145 = weight(_text_:information in 1345) [ClassicSimilarity], result of:
      0.011898145 = score(doc=1345,freq=2.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.19395474 = fieldWeight in 1345, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.078125 = fieldNorm(doc=1345)
  0.25 = coord(1/4)

Footnote: Vgl. auch : Salton, G.: Another look ... Comm. ACM 29(1986) S.S.648-656; Blair, D.C.: Full text retrieval ... Int. Class. 13(1986) S.18-23: Blair, D.C., M.E. Maron: Full-text information retrieval ... Inf. proc. man. 26(1990) S.437-447.

Blair, D.C.: STAIRS Redux : thoughts on the STAIRS evaluation, ten years after (1996) 0.00
```
0.0029446408 = product of:
  0.011778563 = sum of:
    0.011778563 = weight(_text_:information in 3002) [ClassicSimilarity], result of:
      0.011778563 = score(doc=3002,freq=4.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.1920054 = fieldWeight in 3002, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3002)
  0.25 = coord(1/4)
```
Abstract

The test of retrieval effectiveness performed on IBM's STAIRS and reported in 'Communications of the ACM' 10 years ago, continues to be cited frequently in the information retrieval literature. The reasons for the study's continuing pertinence to today's research are discussed, and the political, legal, and commercial aspects of the study are presented. In addition, the method of calculating recall that was used in the STAIRS study is discussed in some detail, especially how it reduces the 5 major types of uncertainty in recall estimations. It is also suggested that this method of recall estimation may serve as the basis for recall estimations that might be truly comparable between systems

Source

Journal of the American Society for Information Science. 47(1996) no.1, S.4-22
Blair, D.C.: Full text retrieval : Evaluation and implications (1986) 0.00
```
0.0025239778 = product of:
  0.010095911 = sum of:
    0.010095911 = weight(_text_:information in 2047) [ClassicSimilarity], result of:
      0.010095911 = score(doc=2047,freq=4.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.16457605 = fieldWeight in 2047, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.046875 = fieldNorm(doc=2047)
  0.25 = coord(1/4)
```
Abstract

Recently, a detailed evaluation of a large, operational full-text document retrieval system was reported in the literature. Values of precision and recall were estimated usind traditional statistical sampling methods and blind evaluation procedures. The results of this evaluation demonstrated that the system tested was retrieving less then 20% of the relevant documents when the searchers believed it was retrieving over 75% of the relevant documents. This evaluation is described including some data not reported in the original article. Also discussed are the implications which this study has for how the subjects of documents should be represented, as well as the importance of rigorous retrieval evaluations for the furtherhance of information retrieval research

Footnote

Vgl.: Blair, D.C., M.E. Maron: An evaluation ... Comm. ACM 28(1985) S.280-299; Salton, G.: Another look ... Comm. ACM 29(1986) S.648-656; Blair, D.C., M.E. Maron: Full-text information retrieval ... Inf. Proc. Man. 26(1990) S.437-447.

Blair, D.C.: Some thoughts on the reported results of TREC (2002) 0.00

0.002379629 = product of:
  0.009518516 = sum of:
    0.009518516 = weight(_text_:information in 2583) [ClassicSimilarity], result of:
      0.009518516 = score(doc=2583,freq=2.0), product of:
        0.06134496 = queryWeight, product of:
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.034944877 = queryNorm
        0.1551638 = fieldWeight in 2583, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          1.7554779 = idf(docFreq=20772, maxDocs=44218)
          0.0625 = fieldNorm(doc=2583)
  0.25 = coord(1/4)

Source: Information processing and management. 38(2002) no.3, S.445-451

Search (5 results, page 1 of 1)

Years