-
Ojala, M.: Research into full-text retrieval (1990)
0.01
0.0072569787 = product of:
0.07256979 = sum of:
0.07256979 = product of:
0.21770936 = sum of:
0.21770936 = weight(_text_:1990 in 576) [ClassicSimilarity], result of:
0.21770936 = score(doc=576,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
1.5746689 = fieldWeight in 576, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.15625 = fieldNorm(doc=576)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Database. 13(1990) August, S.78-80
- Year
- 1990
-
Kristensen, J.; Järvelin, K.: ¬The effectiveness of a searching thesaurus in free-text searching in a full-text database (1990)
0.01
0.005805583 = product of:
0.058055833 = sum of:
0.058055833 = product of:
0.1741675 = sum of:
0.1741675 = weight(_text_:1990 in 2043) [ClassicSimilarity], result of:
0.1741675 = score(doc=2043,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
1.2597351 = fieldWeight in 2043, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.125 = fieldNorm(doc=2043)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- International classification. 17(1990), S.77-84
- Year
- 1990
-
Tenopir, C.; Ro, J.S.: Full text databases (1990)
0.00
0.003934862 = product of:
0.03934862 = sum of:
0.03934862 = product of:
0.11804586 = sum of:
0.11804586 = weight(_text_:1990 in 1916) [ClassicSimilarity], result of:
0.11804586 = score(doc=1916,freq=3.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.85381323 = fieldWeight in 1916, product of:
1.7320508 = tf(freq=3.0), with freq of:
3.0 = termFreq=3.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.109375 = fieldNorm(doc=1916)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Year
- 1990
-
Yetim, F.: ¬Ein intertextuelles Hypertextmodell als Weiterentwicklung eines Volltextanalysesystems (1990)
0.00
0.0033727388 = product of:
0.03372739 = sum of:
0.03372739 = product of:
0.10118216 = sum of:
0.10118216 = weight(_text_:1990 in 15) [ClassicSimilarity], result of:
0.10118216 = score(doc=15,freq=3.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.7318399 = fieldWeight in 15, product of:
1.7320508 = tf(freq=3.0), with freq of:
3.0 = termFreq=3.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.09375 = fieldNorm(doc=15)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Year
- 1990
-
Blair, D.C.; Maron, M.E.: Full-text information retrieval : further analysis and clarification (1990)
0.00
0.0029027916 = product of:
0.029027916 = sum of:
0.029027916 = product of:
0.08708375 = sum of:
0.08708375 = weight(_text_:1990 in 2046) [ClassicSimilarity], result of:
0.08708375 = score(doc=2046,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.62986755 = fieldWeight in 2046, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.0625 = fieldNorm(doc=2046)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Information processing and management. 26(1990), S.437-447
- Year
- 1990
-
Leppanen, E.: Homografiongelma tekstihaussa ja homografien disambiguoinnin vaikutukset (1996)
0.00
0.002730698 = product of:
0.027306981 = sum of:
0.027306981 = product of:
0.081920944 = sum of:
0.081920944 = weight(_text_:problem in 27) [ClassicSimilarity], result of:
0.081920944 = score(doc=27,freq=10.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.6291675 = fieldWeight in 27, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.046875 = fieldNorm(doc=27)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- Homonymy is known to often cause false drops in free text searching in a full text database. The problem is quite common and difficult to avoid in Finnish, but nobody has examined it before. Reports on a study that examined the frequency of, and solutions to, the homonymy problem, based on searches made in a Finnish full text database containing about 55.000 newspaper articles. The results indicate that homonymy is not a very serious problem in full text searching, with only about 1 search result set out of 4 containing false drops caused by homonymy. Several other reasons for nonrelevance were much more common. However, in some set results there were a considerable number of homonymy errors, so the number seems to be very random. A study was also made into whether homonyms can be disambiguated by syntactic analysis. The result was that 75,2% of homonyms were disambiguated by this method. Verb homonyms were considerably easier to disambiguate than substantives. Although homonymy is not a very big problem it could perhaps easily be eliminated if there was a suitable syntactic analyzer in the IR system
- Footnote
- Übers. d. Titels: The homonymy problem in free text searching and the results of homonymy disambiguation
-
Basch, R.: ¬Die sieben Todsünden der Volltextrecherche (1990)
0.00
0.0025399427 = product of:
0.025399428 = sum of:
0.025399428 = product of:
0.07619828 = sum of:
0.07619828 = weight(_text_:1990 in 2034) [ClassicSimilarity], result of:
0.07619828 = score(doc=2034,freq=5.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.5511341 = fieldWeight in 2034, product of:
2.236068 = tf(freq=5.0), with freq of:
5.0 = termFreq=5.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.0546875 = fieldNorm(doc=2034)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- Nachrichten für Dokumentation. 41(1990), S.229-235
- Year
- 1990
-
Blair, D.C.; Maron, M.E.: ¬An evaluation of retrieval effectiveness for a full-text document-retrieval system (1985)
0.00
0.0022948582 = product of:
0.022948582 = sum of:
0.022948582 = product of:
0.06884574 = sum of:
0.06884574 = weight(_text_:1990 in 1345) [ClassicSimilarity], result of:
0.06884574 = score(doc=1345,freq=2.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.497954 = fieldWeight in 1345, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.078125 = fieldNorm(doc=1345)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- 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.
-
Salton, G.: Another look at automatic text-retrieval systems (1986)
0.00
0.0022948582 = product of:
0.022948582 = sum of:
0.022948582 = product of:
0.06884574 = sum of:
0.06884574 = weight(_text_:1990 in 1356) [ClassicSimilarity], result of:
0.06884574 = score(doc=1356,freq=2.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.497954 = fieldWeight in 1356, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.078125 = fieldNorm(doc=1356)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Footnote
- Bezugnahme auf: Blair, D.C.: An evaluation of retrieval effectiveness for a full-text document-retrieval system. Comm. ACM 28(1985) S.280-299. - Vgl. auch: 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.
-
Wenzel, F.: Semantische Eingrenzung im Freitext-Retrieval auf der Basis morphologischer Segmentierungen (1980)
0.00
0.0020353422 = product of:
0.020353422 = sum of:
0.020353422 = product of:
0.06106026 = sum of:
0.06106026 = weight(_text_:problem in 2037) [ClassicSimilarity], result of:
0.06106026 = score(doc=2037,freq=2.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.46895373 = fieldWeight in 2037, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.078125 = fieldNorm(doc=2037)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- The basic problem in freetext retrieval is that the retrieval language is not properly adapted to that of the author. Morphological segmentation, where words with the same root are grouped together in the inverted file, is a good eliminator of noise and information loss, providing high recall but low precision
-
Wildemuth, B.M.: Measures of success in searching a full-text fact base (1990)
0.00
0.001967431 = product of:
0.01967431 = sum of:
0.01967431 = product of:
0.05902293 = sum of:
0.05902293 = weight(_text_:1990 in 2050) [ClassicSimilarity], result of:
0.05902293 = score(doc=2050,freq=3.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.42690662 = fieldWeight in 2050, product of:
1.7320508 = tf(freq=3.0), with freq of:
3.0 = termFreq=3.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.0546875 = fieldNorm(doc=2050)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Year
- 1990
-
Blair, D.C.: Full text retrieval : Evaluation and implications (1986)
0.00
0.0013769149 = product of:
0.013769149 = sum of:
0.013769149 = product of:
0.041307446 = sum of:
0.041307446 = weight(_text_:1990 in 2047) [ClassicSimilarity], result of:
0.041307446 = score(doc=2047,freq=2.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.2987724 = fieldWeight in 2047, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.046875 = fieldNorm(doc=2047)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- 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.
-
McKinin, E.J.; Sievert, M.E.; Johnson, D.; Mitchell, J.A.: ¬The Medline/full-text research project (1991)
0.00
0.0013769149 = product of:
0.013769149 = sum of:
0.013769149 = product of:
0.041307446 = sum of:
0.041307446 = weight(_text_:1990 in 5385) [ClassicSimilarity], result of:
0.041307446 = score(doc=5385,freq=2.0), product of:
0.13825724 = queryWeight, product of:
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.03067635 = queryNorm
0.2987724 = fieldWeight in 5385, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.506965 = idf(docFreq=1325, maxDocs=44218)
0.046875 = fieldNorm(doc=5385)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- This project was designed to test the relative efficacy of index terms and full-text for the retrieval of documents in those MEDLINE journals for which full-text searching was also available. The full-text files used were MEDIS from Mead Data Central and CCML from BRS Information Technologies. One hundred clinical medical topics were searches in these two files as well as the MEDLINE file to accumulate the necessary data. It was found that full-text identified significantly more relevant articles than did the indexed file. Most relevant items missed in the full-text files, but identified in MEDLINE, were missed because the searcher failed to account for some aspect of natural language, used a logical or positional operator that was too restrictive, or included a concept which was implied, but not expressed in the natural language. Very few of the unique relevant full-text citations would have been retrievaed by title or abstract alone. Finally, as of July, 1990 the more current issue of a journal was just as likely to appear in MEDLINE as in one of the full-text files.
-
Laegreid, J.A.: SIFT: a Norwegian information retrieval system (1993)
0.00
0.0011083259 = product of:
0.011083259 = sum of:
0.011083259 = product of:
0.033249777 = sum of:
0.033249777 = weight(_text_:22 in 7701) [ClassicSimilarity], result of:
0.033249777 = score(doc=7701,freq=2.0), product of:
0.10742335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03067635 = queryNorm
0.30952093 = fieldWeight in 7701, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=7701)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Date
- 23. 1.1999 19:22:09
-
Reinisch, F.: Wer suchet - der findet? : oder Die Überwindung der sprachlichen Grenzen bei der Suche in Volltextdatenbanken (2000)
0.00
0.0011083259 = product of:
0.011083259 = sum of:
0.011083259 = product of:
0.033249777 = sum of:
0.033249777 = weight(_text_:22 in 4919) [ClassicSimilarity], result of:
0.033249777 = score(doc=4919,freq=2.0), product of:
0.10742335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03067635 = queryNorm
0.30952093 = fieldWeight in 4919, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=4919)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Date
- 22. 7.2000 17:48:06
-
Zillmann, H.: OSIRIS und eLib : Information Retrieval und Search Engines in Full-text Databases (2001)
0.00
0.0011083259 = product of:
0.011083259 = sum of:
0.011083259 = product of:
0.033249777 = sum of:
0.033249777 = weight(_text_:22 in 5937) [ClassicSimilarity], result of:
0.033249777 = score(doc=5937,freq=2.0), product of:
0.10742335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03067635 = queryNorm
0.30952093 = fieldWeight in 5937, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=5937)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Date
- 14. 6.2001 12:22:31
-
Dambeck, H.; Engler, T.: Gesucht und gefunden : Neun Volltext-Suchprogramme für den Desktop (2002)
0.00
0.0011083259 = product of:
0.011083259 = sum of:
0.011083259 = product of:
0.033249777 = sum of:
0.033249777 = weight(_text_:22 in 1169) [ClassicSimilarity], result of:
0.033249777 = score(doc=1169,freq=2.0), product of:
0.10742335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03067635 = queryNorm
0.30952093 = fieldWeight in 1169, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0625 = fieldNorm(doc=1169)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Source
- c't. 2002, H.22, S.190-197
-
Sievert, M.E.; McKinin, E.J.: Why full-text misses some relevant documents : an analysis of documents not retrieved by CCML or MEDIS (1989)
0.00
8.3124434E-4 = product of:
0.008312443 = sum of:
0.008312443 = product of:
0.02493733 = sum of:
0.02493733 = weight(_text_:22 in 3564) [ClassicSimilarity], result of:
0.02493733 = score(doc=3564,freq=2.0), product of:
0.10742335 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.03067635 = 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)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Date
- 9. 1.1996 10:22:31
-
Rösener, C.: ¬Die Stecknadel im Heuhaufen : Natürlichsprachlicher Zugang zu Volltextdatenbanken (2005)
0.00
8.141369E-4 = product of:
0.008141369 = sum of:
0.008141369 = product of:
0.024424106 = sum of:
0.024424106 = weight(_text_:problem in 548) [ClassicSimilarity], result of:
0.024424106 = score(doc=548,freq=2.0), product of:
0.1302053 = queryWeight, product of:
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03067635 = queryNorm
0.1875815 = fieldWeight in 548, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
4.244485 = idf(docFreq=1723, maxDocs=44218)
0.03125 = fieldNorm(doc=548)
0.33333334 = coord(1/3)
0.1 = coord(1/10)
- Abstract
- Die Möglichkeiten, die der heutigen Informations- und Wissensgesellschaft für die Beschaffung und den Austausch von Information zur Verfügung stehen, haben kurioserweise gleichzeitig ein immer akuter werdendes, neues Problem geschaffen: Es wird für jeden Einzelnen immer schwieriger, aus der gewaltigen Fülle der angebotenen Informationen die tatsächlich relevanten zu selektieren. Diese Arbeit untersucht die Möglichkeit, mit Hilfe von natürlichsprachlichen Schnittstellen den Zugang des Informationssuchenden zu Volltextdatenbanken zu verbessern. Dabei werden zunächst die wissenschaftlichen Fragestellungen ausführlich behandelt. Anschließend beschreibt der Autor verschiedene Lösungsansätze und stellt anhand einer natürlichsprachlichen Schnittstelle für den Brockhaus Multimedial 2004 deren erfolgreiche Implementierung vor
