-
Fuhr, N.; Niewelt, B.: ¬Ein Retrievaltest mit automatisch indexierten Dokumenten (1984)
0.02
0.02181555 = product of:
0.032723323 = sum of:
0.0073404266 = weight(_text_:s in 262) [ClassicSimilarity], result of:
0.0073404266 = score(doc=262,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.16817348 = fieldWeight in 262, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.109375 = fieldNorm(doc=262)
0.025382897 = product of:
0.07614869 = sum of:
0.07614869 = weight(_text_:22 in 262) [ClassicSimilarity], result of:
0.07614869 = score(doc=262,freq=2.0), product of:
0.1405835 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04014573 = queryNorm
0.5416616 = fieldWeight in 262, 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=262)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Date
- 20.10.2000 12:22:23
- Pages
- S.319-339
-
Womser-Hacker, C.: Evaluierung im Information Retrieval (2013)
0.02
0.015692255 = product of:
0.02353838 = sum of:
0.005243162 = weight(_text_:s in 728) [ClassicSimilarity], result of:
0.005243162 = score(doc=728,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.120123915 = fieldWeight in 728, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=728)
0.01829522 = product of:
0.054885656 = sum of:
0.054885656 = weight(_text_:29 in 728) [ClassicSimilarity], result of:
0.054885656 = score(doc=728,freq=2.0), product of:
0.14122012 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04014573 = queryNorm
0.38865322 = fieldWeight in 728, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.078125 = fieldNorm(doc=728)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Date
- 5. 4.2013 13:53:29
- Pages
- S.396-410
-
Dresel, R.; Hörnig, D.; Kaluza, H.; Peter, A.; Roßmann, A.; Sieber, W.: Evaluation deutscher Web-Suchwerkzeuge : Ein vergleichender Retrievaltest (2001)
0.01
0.013624316 = product of:
0.020436473 = sum of:
0.005931961 = weight(_text_:s in 261) [ClassicSimilarity], result of:
0.005931961 = score(doc=261,freq=4.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.1359047 = fieldWeight in 261, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=261)
0.014504513 = product of:
0.043513536 = sum of:
0.043513536 = weight(_text_:22 in 261) [ClassicSimilarity], result of:
0.043513536 = score(doc=261,freq=2.0), product of:
0.1405835 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04014573 = queryNorm
0.30952093 = fieldWeight in 261, 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=261)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Abstract
- Die deutschen Suchmaschinen, Abacho, Acoon, Fireball und Lycos sowie die Web-Kataloge Web.de und Yahoo! werden einem Qualitätstest nach relativem Recall, Precision und Availability unterzogen. Die Methoden der Retrievaltests werden vorgestellt. Im Durchschnitt werden bei einem Cut-Off-Wert von 25 ein Recall von rund 22%, eine Precision von knapp 19% und eine Verfügbarkeit von 24% erreicht
- Footnote
- Vgl. auch den Bericht in: nfd 53(2002) H.2, S.71
- Source
- nfd Information - Wissenschaft und Praxis. 52(2001) H.7, S.381-392
-
Reichert, S.; Mayr, P.: Untersuchung von Relevanzeigenschaften in einem kontrollierten Eyetracking-Experiment (2012)
0.01
0.010218237 = product of:
0.015327355 = sum of:
0.004448971 = weight(_text_:s in 328) [ClassicSimilarity], result of:
0.004448971 = score(doc=328,freq=4.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.101928525 = fieldWeight in 328, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=328)
0.010878384 = product of:
0.032635152 = sum of:
0.032635152 = weight(_text_:22 in 328) [ClassicSimilarity], result of:
0.032635152 = score(doc=328,freq=2.0), product of:
0.1405835 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.04014573 = queryNorm
0.23214069 = fieldWeight in 328, 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=328)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Date
- 22. 7.2012 19:25:54
- Source
- Information - Wissenschaft und Praxis. 63(2012) H.3, S.145-156
-
Günther, M.: Vermitteln Suchmaschinen vollständige Bilder aktueller Themen? : Untersuchung der Gewichtung inhaltlicher Aspekte von Suchmaschinenergebnissen in Deutschland und den USA (2016)
0.01
0.007846127 = product of:
0.01176919 = sum of:
0.002621581 = weight(_text_:s in 3068) [ClassicSimilarity], result of:
0.002621581 = score(doc=3068,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.060061958 = fieldWeight in 3068, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0390625 = fieldNorm(doc=3068)
0.00914761 = product of:
0.027442828 = sum of:
0.027442828 = weight(_text_:29 in 3068) [ClassicSimilarity], result of:
0.027442828 = score(doc=3068,freq=2.0), product of:
0.14122012 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.04014573 = queryNorm
0.19432661 = fieldWeight in 3068, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0390625 = fieldNorm(doc=3068)
0.33333334 = coord(1/3)
0.6666667 = coord(2/3)
- Source
- Young information scientists. 1(2016), S.13-29
-
Ronthaler, M.; Zillmann, H.: Literaturrecherche mit OSIRIS : ein Test der OSIRIS-Retrievalkomponente (1998)
0.00
0.0027963533 = product of:
0.008389059 = sum of:
0.008389059 = weight(_text_:s in 414) [ClassicSimilarity], result of:
0.008389059 = score(doc=414,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.19219826 = fieldWeight in 414, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.125 = fieldNorm(doc=414)
0.33333334 = coord(1/3)
- Source
- Bibliotheksdienst. 32(1998) H.7, S.1203-1212
-
Kluck, M.: ¬Eine deutschsprachige Testdatenbank für moderne Erschließungs- und Retrievalsysteme : German Indexing and Retrieval Testdatabase - GIRT (1996)
0.00
0.0020972649 = product of:
0.006291794 = sum of:
0.006291794 = weight(_text_:s in 5269) [ClassicSimilarity], result of:
0.006291794 = score(doc=5269,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.14414869 = fieldWeight in 5269, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=5269)
0.33333334 = coord(1/3)
- Pages
- S.427-431
-
Schoger, A.; Frommer, J.: Heterogen - was nun? : Evaluierung heterogener bibliographischer Metadaten (2000)
0.00
0.0020972649 = product of:
0.006291794 = sum of:
0.006291794 = weight(_text_:s in 4465) [ClassicSimilarity], result of:
0.006291794 = score(doc=4465,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.14414869 = fieldWeight in 4465, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.09375 = fieldNorm(doc=4465)
0.33333334 = coord(1/3)
- Source
- Zeitschrift für Bibliothekswesen und Bibliographie. 47(2000) H.1, S.110-128
-
Bollmann-Sdorra, P.: Probleme der Validität bei Retrievaltests (1990)
0.00
0.0017477208 = product of:
0.005243162 = sum of:
0.005243162 = weight(_text_:s in 5113) [ClassicSimilarity], result of:
0.005243162 = score(doc=5113,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.120123915 = fieldWeight in 5113, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=5113)
0.33333334 = coord(1/3)
- Source
- Nachrichten für Dokumentation. 41(1990) H.1, S.9-12
-
Biebricher, P.; Fuhr, N.; Niewelt, B.: ¬Der AIR-Retrievaltest (1986)
0.00
0.0017477208 = product of:
0.005243162 = sum of:
0.005243162 = weight(_text_:s in 4040) [ClassicSimilarity], result of:
0.005243162 = score(doc=4040,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.120123915 = fieldWeight in 4040, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=4040)
0.33333334 = coord(1/3)
- Pages
- S.127-143
-
Griesbaum, J.; Rittberger, M.; Bekavac, B.: Deutsche Suchmaschinen im Vergleich : AltaVista.de, Fireball.de, Google.de und Lycos.de (2002)
0.00
0.0017477208 = product of:
0.005243162 = sum of:
0.005243162 = weight(_text_:s in 1159) [ClassicSimilarity], result of:
0.005243162 = score(doc=1159,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.120123915 = fieldWeight in 1159, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.078125 = fieldNorm(doc=1159)
0.33333334 = coord(1/3)
- Pages
- S.201-223
-
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)
0.00
0.0014829903 = product of:
0.004448971 = sum of:
0.004448971 = weight(_text_:s in 5105) [ClassicSimilarity], result of:
0.004448971 = score(doc=5105,freq=4.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.101928525 = fieldWeight in 5105, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=5105)
0.33333334 = coord(1/3)
- Source
- Nachrichten für Dokumentation. 42(1991) H.2, S.107-114. (T.1); 42(1991) H.3, S.177-190 (T.2)
-
Petras, V.; Womser-Hacker, C.: Evaluation im Information Retrieval (2023)
0.00
0.0014829903 = product of:
0.004448971 = sum of:
0.004448971 = weight(_text_:s in 808) [ClassicSimilarity], result of:
0.004448971 = score(doc=808,freq=4.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.101928525 = fieldWeight in 808, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.046875 = fieldNorm(doc=808)
0.33333334 = coord(1/3)
- Abstract
- Das Ziel einer Evaluation ist die Überprüfung, ob bzw. in welchem Ausmaß ein Informationssystem die an das System gestellten Anforderungen erfüllt. Informationssysteme können aus verschiedenen Perspektiven evaluiert werden. Für eine ganzheitliche Evaluation (als Synonym wird auch Evaluierung benutzt), die unterschiedliche Qualitätsaspekte betrachtet (z. B. wie gut ein System relevante Dokumente rankt, wie schnell ein System die Suche durchführt, wie die Ergebnispräsentation gestaltet ist oder wie Suchende durch das System geführt werden) und die Erfüllung mehrerer Anforderungen überprüft, empfiehlt es sich, sowohl eine perspektivische als auch methodische Triangulation (d. h. der Einsatz von mehreren Ansätzen zur Qualitätsüberprüfung) vorzunehmen. Im Information Retrieval (IR) konzentriert sich die Evaluation auf die Qualitätseinschätzung der Suchfunktion eines Information-Retrieval-Systems (IRS), wobei oft zwischen systemzentrierter und nutzerzentrierter Evaluation unterschieden wird. Dieses Kapitel setzt den Fokus auf die systemzentrierte Evaluation, während andere Kapitel dieses Handbuchs andere Evaluationsansätze diskutieren (s. Kapitel C 4 Interaktives Information Retrieval, C 7 Cross-Language Information Retrieval und D 1 Information Behavior).
- Pages
- S.443-453
-
Bauer, G.; Schneider, C.: PADOK-II : Untersuchungen zur Volltextproblematik und zur interpretativen Analyse der Retrievalprotokolle (1990)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 4164) [ClassicSimilarity], result of:
0.0041945297 = score(doc=4164,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 4164, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=4164)
0.33333334 = coord(1/3)
- Source
- Nachrichten für Dokumentation. 41(1990) H.1, S.21-26
-
Jochum, F.; Weissmann, V.: Struktur und Elemente des Information Retrieval Experiments (1985)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 114) [ClassicSimilarity], result of:
0.0041945297 = score(doc=114,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 114, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=114)
0.33333334 = coord(1/3)
- Pages
- S.76-87
-
Krause, J.; Womser-Hacker, C.: PADOK-II : Retrievaltests zur Bewertung von Volltextindexierungsvarianten für das deutsche Patentinformationssystem (1990)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 2653) [ClassicSimilarity], result of:
0.0041945297 = score(doc=2653,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 2653, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=2653)
0.33333334 = coord(1/3)
- Source
- Nachrichten für Dokumentation. 41(1990) H.1, S.13-19
-
Heinz, M.; Voigt, H.: Aufbau einer Suchmaschine für ein Forschungsinstitut : Aufgabe für die Bibliothek? (2000)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 5234) [ClassicSimilarity], result of:
0.0041945297 = score(doc=5234,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 5234, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=5234)
0.33333334 = coord(1/3)
- Source
- nfd Information - Wissenschaft und Praxis. 51(2000) H.6, S.335-341
-
Mandl, T.: Web- und Multimedia-Dokumente : Neuere Entwicklungen bei der Evaluierung von Information Retrieval Systemen (2003)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 1734) [ClassicSimilarity], result of:
0.0041945297 = score(doc=1734,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 1734, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=1734)
0.33333334 = coord(1/3)
- Source
- Information - Wissenschaft und Praxis. 54(2003) H.4, S.203-210
-
Grummann, M.: Sind Verfahren zur maschinellen Indexierung für Literaturbestände Öffentlicher Bibliotheken geeignet? : Retrievaltests von indexierten ekz-Daten mit der Software IDX (2000)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 1879) [ClassicSimilarity], result of:
0.0041945297 = score(doc=1879,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 1879, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=1879)
0.33333334 = coord(1/3)
- Source
- Bibliothek: Forschung und Praxis. 24(2000) H.3, S.297-318
-
Hierl, S.: Bezugsrahmen für die Evaluation von Information Retrieval Systemen mit Visualisierungskomponenten (2007)
0.00
0.0013981767 = product of:
0.0041945297 = sum of:
0.0041945297 = weight(_text_:s in 3040) [ClassicSimilarity], result of:
0.0041945297 = score(doc=3040,freq=2.0), product of:
0.043647945 = queryWeight, product of:
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.04014573 = queryNorm
0.09609913 = fieldWeight in 3040, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.0872376 = idf(docFreq=40523, maxDocs=44218)
0.0625 = fieldNorm(doc=3040)
0.33333334 = coord(1/3)