-
Robertson, S.E.; Thompson, C.L.: ¬An operational evaluation of weighting, ranking and relevance feedback via a front-end system (1987)
0.02
0.015869606 = product of:
0.031739213 = sum of:
0.031739213 = product of:
0.063478425 = sum of:
0.063478425 = weight(_text_:r in 3858) [ClassicSimilarity], result of:
0.063478425 = score(doc=3858,freq=2.0), product of:
0.12397416 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.037451506 = queryNorm
0.51202947 = fieldWeight in 3858, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.109375 = fieldNorm(doc=3858)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Type
- r
-
Saracevic, T.: On a method for studying the structure and nature of requests in information retrieval (1983)
0.01
0.012685404 = product of:
0.025370808 = sum of:
0.025370808 = product of:
0.050741617 = sum of:
0.050741617 = weight(_text_:22 in 2417) [ClassicSimilarity], result of:
0.050741617 = score(doc=2417,freq=2.0), product of:
0.13114879 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037451506 = queryNorm
0.38690117 = fieldWeight in 2417, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.078125 = fieldNorm(doc=2417)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Pages
- S.22-25
-
Pao, M.L.: Retrieval differences between term and citation indexing (1989)
0.01
0.009068346 = product of:
0.018136691 = sum of:
0.018136691 = product of:
0.036273383 = sum of:
0.036273383 = weight(_text_:r in 3566) [ClassicSimilarity], result of:
0.036273383 = score(doc=3566,freq=2.0), product of:
0.12397416 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.037451506 = queryNorm
0.29258826 = fieldWeight in 3566, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.0625 = fieldNorm(doc=3566)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Source
- Information, knowledge, evolution. Proceedings of the 44th FID congress, Helsinki, 28.8.-1.9.1988. Ed. by S. Koshiala and R. Launo
-
Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983)
0.01
0.008879783 = product of:
0.017759565 = sum of:
0.017759565 = product of:
0.03551913 = sum of:
0.03551913 = weight(_text_:22 in 5001) [ClassicSimilarity], result of:
0.03551913 = score(doc=5001,freq=2.0), product of:
0.13114879 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037451506 = queryNorm
0.2708308 = fieldWeight in 5001, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0546875 = fieldNorm(doc=5001)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 14. 3.1996 13:22:21
-
Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989)
0.01
0.0076112426 = product of:
0.015222485 = sum of:
0.015222485 = product of:
0.03044497 = sum of:
0.03044497 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
0.03044497 = score(doc=3564,freq=2.0), product of:
0.13114879 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.037451506 = queryNorm
0.23214069 = fieldWeight in 3564, 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=3564)
0.5 = coord(1/2)
0.5 = coord(1/2)
- Date
- 9. 1.1996 10:22:31
-
Fidel, R.: Online searching styles : a case-study-based model of searching behavior (1984)
0.01
0.0068012597 = product of:
0.013602519 = sum of:
0.013602519 = product of:
0.027205039 = sum of:
0.027205039 = weight(_text_:r in 1659) [ClassicSimilarity], result of:
0.027205039 = score(doc=1659,freq=2.0), product of:
0.12397416 = queryWeight, product of:
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.037451506 = queryNorm
0.2194412 = fieldWeight in 1659, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.3102584 = idf(docFreq=4387, maxDocs=44218)
0.046875 = fieldNorm(doc=1659)
0.5 = coord(1/2)
0.5 = coord(1/2)