-
Kaltenborn, K.-F.: Endnutzerrecherchen in der CD-ROM-Datenbank Medline : T.1: Evaluations- und Benutzerforschung über Nutzungscharakteristika, Bewertung der Rechercheergebnisse und künftige Informationsgewinnung; T.2: Evaluations- und Benutzerforschung über Recherchequalität und Nutzer-Computer/Datenbank-Interaktion (1991)
0.03
0.028635753 = product of:
0.11454301 = sum of:
0.022303475 = weight(_text_:und in 5105) [ClassicSimilarity], result of:
0.022303475 = score(doc=5105,freq=16.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.41556883 = fieldWeight in 5105, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5105)
0.022303475 = weight(_text_:und in 5105) [ClassicSimilarity], result of:
0.022303475 = score(doc=5105,freq=16.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.41556883 = fieldWeight in 5105, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5105)
0.025329107 = weight(_text_:der in 5105) [ClassicSimilarity], result of:
0.025329107 = score(doc=5105,freq=20.0), product of:
0.054091092 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.024215192 = queryNorm
0.46826762 = fieldWeight in 5105, product of:
4.472136 = tf(freq=20.0), with freq of:
20.0 = termFreq=20.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.046875 = fieldNorm(doc=5105)
0.022303475 = weight(_text_:und in 5105) [ClassicSimilarity], result of:
0.022303475 = score(doc=5105,freq=16.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.41556883 = fieldWeight in 5105, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5105)
0.022303475 = weight(_text_:und in 5105) [ClassicSimilarity], result of:
0.022303475 = score(doc=5105,freq=16.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.41556883 = fieldWeight in 5105, product of:
4.0 = tf(freq=16.0), with freq of:
16.0 = termFreq=16.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5105)
0.25 = coord(5/20)
- Abstract
- Die Einführung von CD-ROM Datenbanken als neue Informationstechnologie hat die Formen der Informationsgewinnung in bestimmten wissenschaftlichen Fachgebieten grundlegend geändert. Der Beitrag berichtet über Ergebnisse wissenschaftlicher Begleitforschung bei Endnutzerrecherchen in der CD-ROM-Version der Datenbank MEDLINE. Hierzu wurden drei verschiedene Erhebungen durchgeführt. Hiernach ist die überwiegende Zahl der Endnutzer (89,3%) mit dem jeweiligen Rechercheresultat zufrieden, wobei Benutzer mit geringer Rechercheerfahrung eine höhere Zufriedenheitsrate erreichen als Benutzer mit umfangreicheren Recherchekenntnissen. Die Gründe zur Nutzung von CD-ROM-Systemen resultieren voriwegend aus der klinischen Alltagsroutine oder täglichen Forschungspraxis, während vermittelte Online-Literatursuchen tendenziell häufiger im Zusammenhang mit einmaligen Ereignissen der wissenschaftlichen Aus- und Weiterbildung stehen. Die selbständige CD-ROM Literaturrecherche stellt für die befragten Ärzte und Wissenschaftler die bevorzugte Methode der Informationsgewinnung dar. Die analysierten Endnutzerrecherchen weisen allerdings Fehler und Defizite hinsichtlich einer optimalen Suchstrategie auf, die zu unbemerktn Informationsverlusten und zu Fehlbeurteilungen des wissenschaftlichen Kenntnisstandes führen
-
Krause, J.; Womser-Hacker, C.: PADOK-II : Retrievaltests zur Bewertung von Volltextindexierungsvarianten für das deutsche Patentinformationssystem (1990)
0.03
0.02527466 = product of:
0.10109864 = sum of:
0.018210711 = weight(_text_:und in 2653) [ClassicSimilarity], result of:
0.018210711 = score(doc=2653,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 2653, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=2653)
0.018210711 = weight(_text_:und in 2653) [ClassicSimilarity], result of:
0.018210711 = score(doc=2653,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 2653, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=2653)
0.028255802 = weight(_text_:der in 2653) [ClassicSimilarity], result of:
0.028255802 = score(doc=2653,freq=14.0), product of:
0.054091092 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.024215192 = queryNorm
0.5223744 = fieldWeight in 2653, product of:
3.7416575 = tf(freq=14.0), with freq of:
14.0 = termFreq=14.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0625 = fieldNorm(doc=2653)
0.018210711 = weight(_text_:und in 2653) [ClassicSimilarity], result of:
0.018210711 = score(doc=2653,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 2653, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=2653)
0.018210711 = weight(_text_:und in 2653) [ClassicSimilarity], result of:
0.018210711 = score(doc=2653,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 2653, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=2653)
0.25 = coord(5/20)
- Abstract
- Vorgestellt werden die Ergebnisse extensiver Retrievaltests von zwei Varianten von Inhalteserschließungen (Freitext und PASSAT) für das deutsche Patentinformationssystem auf der Basis von Volltexten. Die Tests führte die Fachgruppe Linguistische Informationswissenschaft der Universität Regensburg von 1986-1989 in Zusammenarbeit mit dem Deutschen Patentamt, dem Fachinformationszentrum Karlsruhe und meheren industrieellen Partnern durch. Der Schwerpunkt des Berichts liegt auf dem allgemeinen Ansatz der Bewertung der Ziele des Projekts und auf der Darstellung der statistischen Evaluierungsergebnisse.
-
Bauer, G.; Schneider, C.: PADOK-II : Untersuchungen zur Volltextproblematik und zur interpretativen Analyse der Retrievalprotokolle (1990)
0.02
0.024750657 = product of:
0.09900263 = sum of:
0.018210711 = weight(_text_:und in 4164) [ClassicSimilarity], result of:
0.018210711 = score(doc=4164,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 4164, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=4164)
0.018210711 = weight(_text_:und in 4164) [ClassicSimilarity], result of:
0.018210711 = score(doc=4164,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 4164, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=4164)
0.026159788 = weight(_text_:der in 4164) [ClassicSimilarity], result of:
0.026159788 = score(doc=4164,freq=12.0), product of:
0.054091092 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.024215192 = queryNorm
0.4836247 = fieldWeight in 4164, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0625 = fieldNorm(doc=4164)
0.018210711 = weight(_text_:und in 4164) [ClassicSimilarity], result of:
0.018210711 = score(doc=4164,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 4164, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=4164)
0.018210711 = weight(_text_:und in 4164) [ClassicSimilarity], result of:
0.018210711 = score(doc=4164,freq=6.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.33931053 = fieldWeight in 4164, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=4164)
0.25 = coord(5/20)
- Abstract
- Dieser Beitrag baut auf dem Bericht über das methodische Konzept, über die Durchführung und die Ergebnisse der PADOK-II-Retrievaltests auf (Krause/Wormser-Hacker). Hier werden die Ergebnisse von Zusatztests zum Einfluß des Umfangs der zugrundeliegenden Dokumente (Volltext vs. Titel+Abstract) beschrieben, die eine deutliche Beeinträchtigung der Recall-Werte bei reduziertem Dokumentenumfang zeigen. Zur interpretativen Analyse der Retrievalprotokolle werden vor allem die methodische Einbindung, Ansatzpunkte der Analyse und erste Ergebnisse vorgestelt.
-
Knorz, G.: Testverfahren für intelligente Indexierungs- und Retrievalsysteme anhand deutsch-sprachiger sozialwissenschaftlicher Fachinformation (GIRT) : Bericht über einen Workshop am 12. September 1997 im IZ Sozialwissenschaften, Bonn (1998)
0.02
0.023697838 = product of:
0.09479135 = sum of:
0.021027917 = weight(_text_:und in 5080) [ClassicSimilarity], result of:
0.021027917 = score(doc=5080,freq=8.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.39180204 = fieldWeight in 5080, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=5080)
0.021027917 = weight(_text_:und in 5080) [ClassicSimilarity], result of:
0.021027917 = score(doc=5080,freq=8.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.39180204 = fieldWeight in 5080, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=5080)
0.010679688 = weight(_text_:der in 5080) [ClassicSimilarity], result of:
0.010679688 = score(doc=5080,freq=2.0), product of:
0.054091092 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.024215192 = queryNorm
0.19743896 = fieldWeight in 5080, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.0625 = fieldNorm(doc=5080)
0.021027917 = weight(_text_:und in 5080) [ClassicSimilarity], result of:
0.021027917 = score(doc=5080,freq=8.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.39180204 = fieldWeight in 5080, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=5080)
0.021027917 = weight(_text_:und in 5080) [ClassicSimilarity], result of:
0.021027917 = score(doc=5080,freq=8.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.39180204 = fieldWeight in 5080, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0625 = fieldNorm(doc=5080)
0.25 = coord(5/20)
- Content
- A. Die Initiative "GIRT" 1. Vorträge 2. Ziele und Perspektiven des Projektes GIRT (Krause) 3. Generelle Ergebnisse der TREC-Studien, einschließlich TREC-5 (Womser-Hacker) 4. Ergebnisse des GIRT-Pretests (Kluck) 5. Multilingualität in TREC (Schäuble) B. Abschlußdiskussion und Resumee
- Source
- nfd Information - Wissenschaft und Praxis. 49(1998) H.2, S.111-116
-
Bollmann-Sdorra, P.: Probleme der Validität bei Retrievaltests (1990)
0.02
0.018923001 = product of:
0.075692005 = sum of:
0.013142449 = weight(_text_:und in 5113) [ClassicSimilarity], result of:
0.013142449 = score(doc=5113,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.24487628 = fieldWeight in 5113, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.078125 = fieldNorm(doc=5113)
0.013142449 = weight(_text_:und in 5113) [ClassicSimilarity], result of:
0.013142449 = score(doc=5113,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.24487628 = fieldWeight in 5113, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.078125 = fieldNorm(doc=5113)
0.023122204 = weight(_text_:der in 5113) [ClassicSimilarity], result of:
0.023122204 = score(doc=5113,freq=6.0), product of:
0.054091092 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.024215192 = queryNorm
0.42746788 = fieldWeight in 5113, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.078125 = fieldNorm(doc=5113)
0.013142449 = weight(_text_:und in 5113) [ClassicSimilarity], result of:
0.013142449 = score(doc=5113,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.24487628 = fieldWeight in 5113, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.078125 = fieldNorm(doc=5113)
0.013142449 = weight(_text_:und in 5113) [ClassicSimilarity], result of:
0.013142449 = score(doc=5113,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.24487628 = fieldWeight in 5113, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.078125 = fieldNorm(doc=5113)
0.25 = coord(5/20)
- Abstract
- In diesem Beitrag werden beispielhaft Probleme der Validität bei Retrievaltests behandelt. Die externe Validität wird im Zusammenhang von Ähnlichkeitsmaßen und Bewertungsmaßen diskutiert. Die interne Validität wird am Beispiel der Mittelwertbildung diskutiert. Es zeigt sich, daß die Forderung nach Validität die zur Auswahl stehenden Methoden einschränkt
-
Kluck, M.: ¬Eine deutschsprachige Testdatenbank für moderne Erschließungs- und Retrievalsysteme : German Indexing and Retrieval Testdatabase - GIRT (1996)
0.01
0.012616751 = product of:
0.06308375 = sum of:
0.015770938 = weight(_text_:und in 5269) [ClassicSimilarity], result of:
0.015770938 = score(doc=5269,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.29385152 = fieldWeight in 5269, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.09375 = fieldNorm(doc=5269)
0.015770938 = weight(_text_:und in 5269) [ClassicSimilarity], result of:
0.015770938 = score(doc=5269,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.29385152 = fieldWeight in 5269, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.09375 = fieldNorm(doc=5269)
0.015770938 = weight(_text_:und in 5269) [ClassicSimilarity], result of:
0.015770938 = score(doc=5269,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.29385152 = fieldWeight in 5269, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.09375 = fieldNorm(doc=5269)
0.015770938 = weight(_text_:und in 5269) [ClassicSimilarity], result of:
0.015770938 = score(doc=5269,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.29385152 = fieldWeight in 5269, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.09375 = fieldNorm(doc=5269)
0.2 = coord(4/20)
-
Lepsky, K.; Siepmann, J.; Zimmermann, A.: Automatische Indexierung für Online-Kataloge : Ergebnisse eines Retrievaltests (1996)
0.01
0.0073597715 = product of:
0.036798857 = sum of:
0.009199714 = weight(_text_:und in 3251) [ClassicSimilarity], result of:
0.009199714 = score(doc=3251,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.17141339 = fieldWeight in 3251, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0546875 = fieldNorm(doc=3251)
0.009199714 = weight(_text_:und in 3251) [ClassicSimilarity], result of:
0.009199714 = score(doc=3251,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.17141339 = fieldWeight in 3251, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0546875 = fieldNorm(doc=3251)
0.009199714 = weight(_text_:und in 3251) [ClassicSimilarity], result of:
0.009199714 = score(doc=3251,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.17141339 = fieldWeight in 3251, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0546875 = fieldNorm(doc=3251)
0.009199714 = weight(_text_:und in 3251) [ClassicSimilarity], result of:
0.009199714 = score(doc=3251,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.17141339 = fieldWeight in 3251, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.0546875 = fieldNorm(doc=3251)
0.2 = coord(4/20)
- Source
- Zeitschrift für Bibliothekswesen und Bibliographie. 43(1996) H.1, S.47-56
-
Evans, J.E.: Some external and internal factors affecting users of interactive information systems (1996)
0.01
0.0063083754 = product of:
0.031541876 = sum of:
0.007885469 = weight(_text_:und in 6262) [ClassicSimilarity], result of:
0.007885469 = score(doc=6262,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 6262, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=6262)
0.007885469 = weight(_text_:und in 6262) [ClassicSimilarity], result of:
0.007885469 = score(doc=6262,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 6262, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=6262)
0.007885469 = weight(_text_:und in 6262) [ClassicSimilarity], result of:
0.007885469 = score(doc=6262,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 6262, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=6262)
0.007885469 = weight(_text_:und in 6262) [ClassicSimilarity], result of:
0.007885469 = score(doc=6262,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 6262, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=6262)
0.2 = coord(4/20)
- Source
- Herausforderungen an die Informationswirtschaft: Informationsverdichtung, Informationsbewertung und Datenvisualisierung. Proceedings des 5. Internationalen Symposiums für Informationswissenschaft (ISI'96), Humboldt-Universität zu Berlin, 17.-19. Oktober 1996. Hrsg.: J. Krause u.a
-
Chen, H.; Martinez, J.; Kirchhoff, A.; Ng, T.D.; Schatz, B.R.: Alleviating search uncertainty through concept associations : automatic indexing, co-occurence analysis, and parallel computing (1998)
0.01
0.0063083754 = product of:
0.031541876 = sum of:
0.007885469 = weight(_text_:und in 5202) [ClassicSimilarity], result of:
0.007885469 = score(doc=5202,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 5202, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5202)
0.007885469 = weight(_text_:und in 5202) [ClassicSimilarity], result of:
0.007885469 = score(doc=5202,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 5202, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5202)
0.007885469 = weight(_text_:und in 5202) [ClassicSimilarity], result of:
0.007885469 = score(doc=5202,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 5202, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5202)
0.007885469 = weight(_text_:und in 5202) [ClassicSimilarity], result of:
0.007885469 = score(doc=5202,freq=2.0), product of:
0.05366975 = queryWeight, product of:
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.024215192 = queryNorm
0.14692576 = fieldWeight in 5202, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.216367 = idf(docFreq=13101, maxDocs=44218)
0.046875 = fieldNorm(doc=5202)
0.2 = coord(4/20)
- Theme
- Konzeption und Anwendung des Prinzips Thesaurus
-
Tomaiuolo, N.G.; Parker, J.: Maximizing relevant retrieval : keyword and natural language searching (1998)
0.00
0.0011482885 = product of:
0.022965768 = sum of:
0.022965768 = product of:
0.045931537 = sum of:
0.045931537 = weight(_text_:22 in 6418) [ClassicSimilarity], result of:
0.045931537 = score(doc=6418,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.5416616 = fieldWeight in 6418, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=6418)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Source
- Online. 22(1998) no.6, S.57-58
-
Dalrymple, P.W.: Retrieval by reformulation in two library catalogs : toward a cognitive model of searching behavior (1990)
0.00
0.0011482885 = product of:
0.022965768 = sum of:
0.022965768 = product of:
0.045931537 = sum of:
0.045931537 = weight(_text_:22 in 5089) [ClassicSimilarity], result of:
0.045931537 = score(doc=5089,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.5416616 = fieldWeight in 5089, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.109375 = fieldNorm(doc=5089)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Date
- 22. 7.2006 18:43:54
-
Ronthaler, M.; Zillmann, H.: Literaturrecherche mit OSIRIS : ein Test der OSIRIS-Retrievalkomponente (1998)
0.00
0.0010679689 = product of:
0.021359377 = sum of:
0.021359377 = weight(_text_:der in 414) [ClassicSimilarity], result of:
0.021359377 = score(doc=414,freq=2.0), product of:
0.054091092 = queryWeight, product of:
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.024215192 = queryNorm
0.3948779 = fieldWeight in 414, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
2.2337668 = idf(docFreq=12875, maxDocs=44218)
0.125 = fieldNorm(doc=414)
0.05 = coord(1/20)
-
Allan, J.; Callan, J.P.; Croft, W.B.; Ballesteros, L.; Broglio, J.; Xu, J.; Shu, H.: INQUERY at TREC-5 (1997)
0.00
8.20206E-4 = product of:
0.01640412 = sum of:
0.01640412 = product of:
0.03280824 = sum of:
0.03280824 = weight(_text_:22 in 3103) [ClassicSimilarity], result of:
0.03280824 = score(doc=3103,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.38690117 = fieldWeight in 3103, 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=3103)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Date
- 27. 2.1999 20:55:22
-
Ng, K.B.; Loewenstern, D.; Basu, C.; Hirsh, H.; Kantor, P.B.: Data fusion of machine-learning methods for the TREC5 routing tak (and other work) (1997)
0.00
8.20206E-4 = product of:
0.01640412 = sum of:
0.01640412 = product of:
0.03280824 = sum of:
0.03280824 = weight(_text_:22 in 3107) [ClassicSimilarity], result of:
0.03280824 = score(doc=3107,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.38690117 = fieldWeight in 3107, 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=3107)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Date
- 27. 2.1999 20:59:22
-
Sanderson, M.: ¬The Reuters test collection (1996)
0.00
6.5616483E-4 = product of:
0.013123296 = sum of:
0.013123296 = product of:
0.026246592 = sum of:
0.026246592 = weight(_text_:22 in 6971) [ClassicSimilarity], result of:
0.026246592 = score(doc=6971,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.30952093 = fieldWeight in 6971, 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=6971)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Source
- Information retrieval: new systems and current research. Proceedings of the 16th Research Colloquium of the British Computer Society Information Retrieval Specialist Group, Drymen, Scotland, 22-23 Mar 94. Ed.: R. Leon
-
Lespinasse, K.: TREC: une conference pour l'evaluation des systemes de recherche d'information (1997)
0.00
6.5616483E-4 = product of:
0.013123296 = sum of:
0.013123296 = product of:
0.026246592 = sum of:
0.026246592 = weight(_text_:22 in 744) [ClassicSimilarity], result of:
0.026246592 = score(doc=744,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.30952093 = fieldWeight in 744, 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=744)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Date
- 1. 8.1996 22:01:00
-
Pemberton, J.K.; Ojala, M.; Garman, N.: Head to head : searching the Web versus traditional services (1998)
0.00
6.5616483E-4 = product of:
0.013123296 = sum of:
0.013123296 = product of:
0.026246592 = sum of:
0.026246592 = weight(_text_:22 in 3572) [ClassicSimilarity], result of:
0.026246592 = score(doc=3572,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.30952093 = fieldWeight in 3572, 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=3572)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Source
- Online. 22(1998) no.3, S.24-26,28
-
Smithson, S.: Information retrieval evaluation in practice : a case study approach (1994)
0.00
5.7414424E-4 = product of:
0.011482884 = sum of:
0.011482884 = product of:
0.022965768 = sum of:
0.022965768 = weight(_text_:22 in 7302) [ClassicSimilarity], result of:
0.022965768 = score(doc=7302,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.2708308 = fieldWeight in 7302, 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=7302)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Abstract
- The evaluation of information retrieval systems is an important yet difficult operation. This paper describes an exploratory evaluation study that takes an interpretive approach to evaluation. The longitudinal study examines evaluation through the information-seeking behaviour of 22 case studies of 'real' users. The eclectic approach to data collection produced behavioral data that is compared with relevance judgements and satisfaction ratings. The study demonstrates considerable variations among the cases, among different evaluation measures within the same case, and among the same measures at different stages within a single case. It is argued that those involved in evaluation should be aware of the difficulties, and base any evaluation on a good understanding of the cases in question
-
Blair, D.C.: STAIRS Redux : thoughts on the STAIRS evaluation, ten years after (1996)
0.00
5.7414424E-4 = product of:
0.011482884 = sum of:
0.011482884 = product of:
0.022965768 = sum of:
0.022965768 = weight(_text_:22 in 3002) [ClassicSimilarity], result of:
0.022965768 = score(doc=3002,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.2708308 = fieldWeight in 3002, 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=3002)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Source
- Journal of the American Society for Information Science. 47(1996) no.1, S.4-22
-
Losee, R.M.: Determining information retrieval and filtering performance without experimentation (1995)
0.00
5.7414424E-4 = product of:
0.011482884 = sum of:
0.011482884 = product of:
0.022965768 = sum of:
0.022965768 = weight(_text_:22 in 3368) [ClassicSimilarity], result of:
0.022965768 = score(doc=3368,freq=2.0), product of:
0.08479747 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.024215192 = queryNorm
0.2708308 = fieldWeight in 3368, 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=3368)
0.5 = coord(1/2)
0.05 = coord(1/20)
- Date
- 22. 2.1996 13:14:10
