Robertson, S.E.: OKAPI at TREC-3 (1995)
0.00
0.0022114746 = product of:
0.022114746 = sum of:
0.0063836705 = product of:
0.012767341 = sum of:
0.012767341 = weight(_text_:online in 5694) [ClassicSimilarity], result of:
0.012767341 = score(doc=5694,freq=2.0), product of:
0.05439423 = queryWeight, product of:
3.0349014 = idf(docFreq=5778, maxDocs=44218)
0.017922899 = queryNorm
0.23471867 = fieldWeight in 5694, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.0349014 = idf(docFreq=5778, maxDocs=44218)
0.0546875 = fieldNorm(doc=5694)
0.5 = coord(1/2)
0.014862318 = weight(_text_:u in 5694) [ClassicSimilarity], result of:
0.014862318 = score(doc=5694,freq=2.0), product of:
0.058687534 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.017922899 = queryNorm
0.25324488 = fieldWeight in 5694, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.0546875 = fieldNorm(doc=5694)
8.6875854E-4 = product of:
0.0026062755 = sum of:
0.0026062755 = weight(_text_:a in 5694) [ClassicSimilarity], result of:
0.0026062755 = score(doc=5694,freq=4.0), product of:
0.020665944 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.017922899 = queryNorm
0.12611452 = fieldWeight in 5694, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0546875 = fieldNorm(doc=5694)
0.33333334 = coord(1/3)
0.1 = coord(3/30)
- Abstract
- Reports text information retrieval experiments performed as part of the 3 rd round of Text Retrieval Conferences (TREC) using the Okapi online catalogue system at City University, UK. The emphasis in TREC-3 was: further refinement of term weighting functions; an investigation of run time passage determination and searching; expansion of ad hoc queries by terms extracted from the top documents retrieved by a trial search; new methods for choosing query expansion terms after relevance feedback, now split into methods of ranking terms prior to selection and subsequent selection procedures; and the development of a user interface procedure within the new TREC interactive search framework
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval
Jansen, B.; Browne, G.M.: Navigating information spaces : index / mind map / topic map? (2021)
0.00
0.0012259755 = product of:
0.018389631 = sum of:
0.016985506 = weight(_text_:u in 436) [ClassicSimilarity], result of:
0.016985506 = score(doc=436,freq=2.0), product of:
0.058687534 = queryWeight, product of:
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.017922899 = queryNorm
0.28942272 = fieldWeight in 436, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.2744443 = idf(docFreq=4547, maxDocs=44218)
0.0625 = fieldNorm(doc=436)
0.0014041257 = product of:
0.004212377 = sum of:
0.004212377 = weight(_text_:a in 436) [ClassicSimilarity], result of:
0.004212377 = score(doc=436,freq=8.0), product of:
0.020665944 = queryWeight, product of:
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.017922899 = queryNorm
0.20383182 = fieldWeight in 436, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.153047 = idf(docFreq=37942, maxDocs=44218)
0.0625 = fieldNorm(doc=436)
0.33333334 = coord(1/3)
0.06666667 = coord(2/30)
- Abstract
- This paper discusses the use of wiki technology to provide a navigation structure for a collection of newspaper clippings. We overview the architecture of the wiki, discuss the navigation structure and pose the question: is the navigation structure an index, and if so, what type, or is it just a linkage structure or topic map. Does such a distinction really matter? Are these definitions in reality function based?
- Theme
- Semantisches Umfeld in Indexierung u. Retrieval