-
Robertson, S.; Callan, J.: Routing and filtering (2005)
0.00
0.0030970925 = product of:
0.009291277 = sum of:
0.009291277 = weight(_text_:a in 4688) [ClassicSimilarity], result of:
0.009291277 = score(doc=4688,freq=2.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.17835285 = fieldWeight in 4688, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.109375 = fieldNorm(doc=4688)
0.33333334 = coord(1/3)
- Type
- a
-
Robertson, S.: On the history of evaluation in IR (2009)
0.00
0.003065327 = product of:
0.009195981 = sum of:
0.009195981 = weight(_text_:a in 3653) [ClassicSimilarity], result of:
0.009195981 = score(doc=3653,freq=6.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.17652355 = fieldWeight in 3653, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=3653)
0.33333334 = coord(1/3)
- Abstract
- This paper is a personal take on the history of evaluation experiments in information retrieval. It describes some of the early experiments that were formative in our understanding, and goes on to discuss the current dominance of TREC (the Text REtrieval Conference) and to assess its impact.
- Source
- Information science in transition, Ed.: A. Gilchrist
- Type
- a
-
Robertson, S.: How Okapi came to TREC (2005)
0.00
0.002654651 = product of:
0.007963953 = sum of:
0.007963953 = weight(_text_:a in 5087) [ClassicSimilarity], result of:
0.007963953 = score(doc=5087,freq=2.0), product of:
0.05209492 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.045180224 = queryNorm
0.15287387 = fieldWeight in 5087, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.09375 = fieldNorm(doc=5087)
0.33333334 = coord(1/3)
- Type
- a
