-
Scheufen, J.-H.: RECOIN: Modell offener Schnittstellen für Information-Retrieval-Systeme und -Komponenten (2006)
0.09
0.09338091 = product of:
0.24901578 = sum of:
0.012139066 = weight(_text_:information in 4901) [ClassicSimilarity], result of:
0.012139066 = score(doc=4901,freq=4.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.1920054 = fieldWeight in 4901, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=4901)
0.062428303 = weight(_text_:retrieval in 4901) [ClassicSimilarity], result of:
0.062428303 = score(doc=4901,freq=12.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.5730491 = fieldWeight in 4901, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0546875 = fieldNorm(doc=4901)
0.17444842 = weight(_text_:modell in 4901) [ClassicSimilarity], result of:
0.17444842 = score(doc=4901,freq=6.0), product of:
0.21656582 = queryWeight, product of:
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.036014426 = queryNorm
0.8055215 = fieldWeight in 4901, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.0546875 = fieldNorm(doc=4901)
0.375 = coord(3/8)
- Abstract
- Erfahrungen im Cross Language Evaluation Forum (CLEF) und die Beschäftigung mit Fragestellungen zum MIMOR-Modell haben den Bedarf für ein Framework zur Integration heterogener Retrieval-Komponenten aufgezeigt, mit dein sich einzelne Schritte des Retrieval-Prozesses individuell konfigurieren, untersuchen und optimieren lassen. RECOIN stellt ein Meta-Framework zur Verfügung, das den Programmieraufwand für die Integration neuer oder bereits existierender Retrieval-Bausteine minimiert und außerdem die Steuerung und Protokollierung verwendeter Objekte, Methoden und Parameter des Retrieval-Prozesses ermöglicht.
- Object
- MIMOR-Modell
- Source
- Effektive Information Retrieval Verfahren in Theorie und Praxis: ausgewählte und erweiterte Beiträge des Vierten Hildesheimer Evaluierungs- und Retrievalworkshop (HIER 2005), Hildesheim, 20.7.2005. Hrsg.: T. Mandl u. C. Womser-Hacker
-
Hull, D.: ¬A weighted Boolean model for cross-language text retrieval (1998)
0.04
0.043567263 = product of:
0.11617937 = sum of:
0.020809827 = weight(_text_:information in 6307) [ClassicSimilarity], result of:
0.020809827 = score(doc=6307,freq=4.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.3291521 = fieldWeight in 6307, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6307)
0.07567454 = weight(_text_:retrieval in 6307) [ClassicSimilarity], result of:
0.07567454 = score(doc=6307,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.6946405 = fieldWeight in 6307, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6307)
0.019695 = product of:
0.059085 = sum of:
0.059085 = weight(_text_:29 in 6307) [ClassicSimilarity], result of:
0.059085 = score(doc=6307,freq=2.0), product of:
0.1266875 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.036014426 = queryNorm
0.46638384 = fieldWeight in 6307, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.09375 = fieldNorm(doc=6307)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Date
- 5. 8.2001 14:04:29
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Luca, E.W. de; Dahlberg, I.: ¬Die Multilingual Lexical Linked Data Cloud : eine mögliche Zugangsoptimierung? (2014)
0.04
0.039935023 = product of:
0.1064934 = sum of:
0.010404914 = weight(_text_:information in 1736) [ClassicSimilarity], result of:
0.010404914 = score(doc=1736,freq=4.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.16457605 = fieldWeight in 1736, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=1736)
0.08632957 = weight(_text_:modell in 1736) [ClassicSimilarity], result of:
0.08632957 = score(doc=1736,freq=2.0), product of:
0.21656582 = queryWeight, product of:
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.036014426 = queryNorm
0.39862972 = fieldWeight in 1736, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.046875 = fieldNorm(doc=1736)
0.009758915 = product of:
0.029276744 = sum of:
0.029276744 = weight(_text_:22 in 1736) [ClassicSimilarity], result of:
0.029276744 = score(doc=1736,freq=2.0), product of:
0.12611638 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036014426 = queryNorm
0.23214069 = fieldWeight in 1736, 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=1736)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- Sehr viele Informationen sind bereits im Web verfügbar oder können aus isolierten strukturierten Datenspeichern wie Informationssystemen und sozialen Netzwerken gewonnen werden. Datenintegration durch Nachbearbeitung oder durch Suchmechanismen (z. B. D2R) ist deshalb wichtig, um Informationen allgemein verwendbar zu machen. Semantische Technologien ermöglichen die Verwendung definierter Verbindungen (typisierter Links), durch die ihre Beziehungen zueinander festgehalten werden, was Vorteile für jede Anwendung bietet, die das in Daten enthaltene Wissen wieder verwenden kann. Um eine semantische Daten-Landkarte herzustellen, benötigen wir Wissen über die einzelnen Daten und ihre Beziehung zu anderen Daten. Dieser Beitrag stellt unsere Arbeit zur Benutzung von Lexical Linked Data (LLD) durch ein Meta-Modell vor, das alle Ressourcen enthält und zudem die Möglichkeit bietet sie unter unterschiedlichen Gesichtspunkten aufzufinden. Wir verbinden damit bestehende Arbeiten über Wissensgebiete (basierend auf der Information Coding Classification) mit der Multilingual Lexical Linked Data Cloud (basierend auf der RDF/OWL-Repräsentation von EuroWordNet und den ähnlichen integrierten lexikalischen Ressourcen MultiWordNet, MEMODATA und die Hamburg Metapher DB).
- Date
- 22. 9.2014 19:00:13
- Source
- Information - Wissenschaft und Praxis. 65(2014) H.4/5, S.279-287
-
Effektive Information Retrieval Verfahren in Theorie und Praxis : ausgewählte und erweiterte Beiträge des Vierten Hildesheimer Evaluierungs- und Retrievalworkshop (HIER 2005), Hildesheim, 20.7.2005 (2006)
0.03
0.034723014 = product of:
0.0925947 = sum of:
0.0120145595 = weight(_text_:information in 5973) [ClassicSimilarity], result of:
0.0120145595 = score(doc=5973,freq=48.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.19003606 = fieldWeight in 5973, product of:
6.928203 = tf(freq=48.0), with freq of:
48.0 = termFreq=48.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.015625 = fieldNorm(doc=5973)
0.039883982 = weight(_text_:retrieval in 5973) [ClassicSimilarity], result of:
0.039883982 = score(doc=5973,freq=60.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.36610767 = fieldWeight in 5973, product of:
7.745967 = tf(freq=60.0), with freq of:
60.0 = termFreq=60.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.015625 = fieldNorm(doc=5973)
0.04069615 = weight(_text_:modell in 5973) [ClassicSimilarity], result of:
0.04069615 = score(doc=5973,freq=4.0), product of:
0.21656582 = queryWeight, product of:
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.036014426 = queryNorm
0.18791586 = fieldWeight in 5973, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.015625 = fieldNorm(doc=5973)
0.375 = coord(3/8)
- Abstract
- Information Retrieval hat sich zu einer Schlüsseltechnologie in der Wissensgesellschaft entwickelt. Die Anzahl der täglichen Anfragen an Internet-Suchmaschinen bildet nur einen Indikator für die große Bedeutung dieses Themas. Der Sammelbandband informiert über Themen wie Information Retrieval-Grundlagen, Retrieval Systeme, Digitale Bibliotheken, Evaluierung und Multilinguale Systeme, beschreibt Anwendungsszenarien und setzt sich mit neuen Herausforderungen an das Information Retrieval auseinander. Die Beiträge behandeln aktuelle Themen und neue Herausforderungen an das Information Retrieval. Die intensive Beteiligung der Informationswissenschaft der Universität Hildesheim am Cross Language Evaluation Forum (CLEF), einer europäischen Evaluierungsinitiative zur Erforschung mehrsprachiger Retrieval Systeme, berührt mehrere der Beiträge. Ebenso spielen Anwendungsszenarien und die Auseinandersetzung mit aktuellen und praktischen Fragestellungen eine große Rolle.
- Content
- Inhalt: Jan-Hendrik Scheufen: RECOIN: Modell offener Schnittstellen für Information-Retrieval-Systeme und -Komponenten Markus Nick, Klaus-Dieter Althoff: Designing Maintainable Experience-based Information Systems Gesine Quint, Steffen Weichert: Die benutzerzentrierte Entwicklung des Produkt- Retrieval-Systems EIKON der Blaupunkt GmbH Claus-Peter Klas, Sascha Kriewel, André Schaefer, Gudrun Fischer: Das DAFFODIL System - Strategische Literaturrecherche in Digitalen Bibliotheken Matthias Meiert: Entwicklung eines Modells zur Integration digitaler Dokumente in die Universitätsbibliothek Hildesheim Daniel Harbig, René Schneider: Ontology Learning im Rahmen von MyShelf Michael Kluck, Marco Winter: Topic-Entwicklung und Relevanzbewertung bei GIRT: ein Werkstattbericht Thomas Mandl: Neue Entwicklungen bei den Evaluierungsinitiativen im Information Retrieval Joachim Pfister: Clustering von Patent-Dokumenten am Beispiel der Datenbanken des Fachinformationszentrums Karlsruhe Ralph Kölle, Glenn Langemeier, Wolfgang Semar: Programmieren lernen in kollaborativen Lernumgebungen Olga Tartakovski, Margaryta Shramko: Implementierung eines Werkzeugs zur Sprachidentifikation in mono- und multilingualen Texten Nina Kummer: Indexierungstechniken für das japanische Retrieval Suriya Na Nhongkai, Hans-Joachim Bentz: Bilinguale Suche mittels Konzeptnetzen Robert Strötgen, Thomas Mandl, René Schneider: Entwicklung und Evaluierung eines Question Answering Systems im Rahmen des Cross Language Evaluation Forum (CLEF) Niels Jensen: Evaluierung von mehrsprachigem Web-Retrieval: Experimente mit dem EuroGOV-Korpus im Rahmen des Cross Language Evaluation Forum (CLEF)
- Footnote
- Rez. in: Information - Wissenschaft und Praxis 57(2006) H.5, S.290-291 (C. Schindler): "Weniger als ein Jahr nach dem "Vierten Hildesheimer Evaluierungs- und Retrievalworkshop" (HIER 2005) im Juli 2005 ist der dazugehörige Tagungsband erschienen. Eingeladen hatte die Hildesheimer Informationswissenschaft um ihre Forschungsergebnisse und die einiger externer Experten zum Thema Information Retrieval einem Fachpublikum zu präsentieren und zur Diskussion zu stellen. Unter dem Titel "Effektive Information Retrieval Verfahren in Theorie und Praxis" sind nahezu sämtliche Beiträge des Workshops in dem nun erschienenen, 15 Beiträge umfassenden Band gesammelt. Mit dem Schwerpunkt Information Retrieval (IR) wird ein Teilgebiet der Informationswissenschaft vorgestellt, das schon immer im Zentrum informationswissenschaftlicher Forschung steht. Ob durch den Leistungsanstieg von Prozessoren und Speichermedien, durch die Verbreitung des Internet über nationale Grenzen hinweg oder durch den stetigen Anstieg der Wissensproduktion, festzuhalten ist, dass in einer zunehmend wechselseitig vernetzten Welt die Orientierung und das Auffinden von Dokumenten in großen Wissensbeständen zu einer zentralen Herausforderung geworden sind. Aktuelle Verfahrensweisen zu diesem Thema, dem Information Retrieval, präsentiert der neue Band anhand von praxisbezogenen Projekten und theoretischen Diskussionen. Das Kernthema Information Retrieval wird in dem Sammelband in die Bereiche Retrieval-Systeme, Digitale Bibliothek, Evaluierung und Multilinguale Systeme untergliedert. Die Artikel der einzelnen Sektionen sind insgesamt recht heterogen und bieten daher keine Überschneidungen inhaltlicher Art. Jedoch ist eine vollkommene thematische Abdeckung der unterschiedlichen Bereiche ebenfalls nicht gegeben, was bei der Präsentation von Forschungsergebnissen eines Institutes und seiner Kooperationspartner auch nur bedingt erwartet werden kann. So lässt sich sowohl in der Gliederung als auch in den einzelnen Beiträgen eine thematische Verdichtung erkennen, die das spezielle Profil und die Besonderheit der Hildesheimer Informationswissenschaft im Feld des Information Retrieval wiedergibt. Teil davon ist die mehrsprachige und interdisziplinäre Ausrichtung, die die Schnittstellen zwischen Informationswissenschaft, Sprachwissenschaft und Informatik in ihrer praxisbezogenen und internationalen Forschung fokussiert.
Im ersten Kapitel "Retrieval-Systeme" werden verschiedene Information RetrievalSysteme präsentiert und Verfahren zu deren Gestaltung diskutiert. Jan-Hendrik Scheufen stellt das Meta-Framework RECOIN zur Information Retrieval Forschung vor, das sich durch eine flexible Handhabung unterschiedlichster Applikationen auszeichnet und dadurch eine zentrierte Protokollierung und Steuerung von Retrieval-Prozessen ermöglicht. Dieses Konzept eines offenen, komponentenbasierten Systems wurde in Form eines Plug-Ins für die javabasierte Open-Source-Plattform Eclipse realisiert. Markus Nick und Klaus-Dieter Althoff erläutern in ihrem Beitrag, der übrigens der einzige englischsprachige Text im Buch ist, das Verfahren DILLEBIS zur Erhaltung und Pflege (Maintenance) von erfahrungsbasierten Informationssystemen. Sie bezeichnen dieses Verfahren als Maintainable Experience-based Information System und plädieren für eine Ausrichtung von erfahrungsbasierten Systemen entsprechend diesem Modell. Gesine Quint und Steffen Weichert stellen dagegen in ihrem Beitrag die benutzerzentrierte Entwicklung des Produkt-Retrieval-Systems EIKON vor, das in Kooperation mit der Blaupunkt GmbH realisiert wurde. In einem iterativen Designzyklus erfolgte die Gestaltung von gruppenspezifischen Interaktionsmöglichkeiten für ein Car-Multimedia-Zubehör-System. Im zweiten Kapitel setzen sich mehrere Autoren dezidierter mit dem Anwendungsgebiet "Digitale Bibliothek" auseinander. Claus-Peter Klas, Sascha Kriewel, Andre Schaefer und Gudrun Fischer von der Universität Duisburg-Essen stellen das System DAFFODIL vor, das durch eine Vielzahl an Werkzeugen zur strategischen Unterstützung bei Literaturrecherchen in digitalen Bibliotheken dient. Zusätzlich ermöglicht die Protokollierung sämtlicher Ereignisse den Einsatz des Systems als Evaluationsplattform. Der Aufsatz von Matthias Meiert erläutert die Implementierung von elektronischen Publikationsprozessen an Hochschulen am Beispiel von Abschlussarbeiten des Studienganges Internationales Informationsmanagement der Universität Hildesheim. Neben Rahmenbedingungen werden sowohl der Ist-Zustand als auch der Soll-Zustand des wissenschaftlichen elektronischen Publizierens in Form von gruppenspezifischen Empfehlungen dargestellt. Daniel Harbig und Rene Schneider beschreiben in ihrem Aufsatz zwei Verfahrensweisen zum maschinellen Erlernen von Ontologien, angewandt am virtuellen Bibliotheksregal MyShelf. Nach der Evaluation dieser beiden Ansätze plädieren die Autoren für ein semi-automatisiertes Verfahren zur Erstellung von Ontologien.
"Evaluierung", das Thema des dritten Kapitels, ist in seiner Breite nicht auf das Information Retrieval beschränkt sondern beinhaltet ebenso einzelne Aspekte der Bereiche Mensch-Maschine-Interaktion sowie des E-Learning. Michael Muck und Marco Winter von der Stiftung Wissenschaft und Politik sowie dem Informationszentrum Sozialwissenschaften thematisieren in ihrem Beitrag den Einfluss der Fragestellung (Topic) auf die Bewertung von Relevanz und zeigen Verfahrensweisen für die Topic-Erstellung auf, die beim Cross Language Evaluation Forum (CLEF) Anwendung finden. Im darauf folgenden Aufsatz stellt Thomas Mandl verschiedene Evaluierungsinitiativen im Information Retrieval und aktuelle Entwicklungen dar. Joachim Pfister erläutert in seinem Beitrag das automatisierte Gruppieren, das sogenannte Clustering, von Patent-Dokumenten in den Datenbanken des Fachinformationszentrums Karlsruhe und evaluiert unterschiedliche Clusterverfahren auf Basis von Nutzerbewertungen. Ralph Kölle, Glenn Langemeier und Wolfgang Semar widmen sich dem kollaborativen Lernen unter den speziellen Bedingungen des Programmierens. Dabei werden das System VitaminL zur synchronen Bearbeitung von Programmieraufgaben und das Kennzahlensystem K-3 für die Bewertung kollaborativer Zusammenarbeit in einer Lehrveranstaltung angewendet. Der aktuelle Forschungsschwerpunkt der Hildesheimer Informationswissenschaft zeichnet sich im vierten Kapitel unter dem Thema "Multilinguale Systeme" ab. Hier finden sich die meisten Beiträge des Tagungsbandes wieder. Olga Tartakovski und Margaryta Shramko beschreiben und prüfen das System Langldent, das die Sprache von mono- und multilingualen Texten identifiziert. Die Eigenheiten der japanischen Schriftzeichen stellt Nina Kummer dar und vergleicht experimentell die unterschiedlichen Techniken der Indexierung. Suriya Na Nhongkai und Hans-Joachim Bentz präsentieren und prüfen eine bilinguale Suche auf Basis von Konzeptnetzen, wobei die Konzeptstruktur das verbindende Elemente der beiden Textsammlungen darstellt. Das Entwickeln und Evaluieren eines mehrsprachigen Question-Answering-Systems im Rahmen des Cross Language Evaluation Forum (CLEF), das die alltagssprachliche Formulierung von konkreten Fragestellungen ermöglicht, wird im Beitrag von Robert Strötgen, Thomas Mandl und Rene Schneider thematisiert. Den Schluss bildet der Aufsatz von Niels Jensen, der ein mehrsprachiges Web-Retrieval-System ebenfalls im Zusammenhang mit dem CLEF anhand des multilingualen EuroGOVKorpus evaluiert.
Abschließend lässt sich sagen, dass der Tagungsband einen gelungenen Überblick über die Information Retrieval Projekte der Hildesheimer Informationswissenschaft und ihrer Kooperationspartner gibt. Die einzelnen Beiträge sind sehr anregend und auf einem hohen Niveau angesiedelt. Ein kleines Hindernis für den Leser stellt die inhaltliche und strukturelle Orientierung innerhalb des Bandes dar. Der Bezug der einzelnen Artikel zum Thema des Kapitels wird zwar im Vorwort kurz erläutert. Erschwert wird die Orientierung im Buch jedoch durch fehlende Kapitelüberschriften am Anfang der einzelnen Sektionen. Außerdem ist zu erwähnen, dass einer der Artikel einen anderen Titel als im Inhaltsverzeichnis angekündigt trägt. Sieht der Leser von diesen formalen Mängeln ab, wird er reichlich mit praxisbezogenen und theoretisch fundierten Projektdarstellungen und Forschungsergebnissen belohnt. Dies insbesondere, da nicht nur aktuelle Themen der Informationswissenschaft aufgegriffen, sondern ebenso weiterentwickelt und durch die speziellen interdisziplinären und internationalen Bedingungen in Hildesheim geformt werden. Dabei zeigt sich anhand der verschiedenen Projekte, wie gut die Hildesheimer Informationswissenschaft in die Community überregionaler Informationseinrichtungen und anderer deutscher informationswissenschaftlicher Forschungsgruppen eingebunden ist. Damit hat der Workshop bei einer weiteren Öffnung der Expertengruppe das Potential zu einer eigenständigen Institution im Bereich des Information Retrieval zu werden. In diesem Sinne lässt sich auf weitere fruchtbare Workshops und deren Veröffentlichungen hoffen. Ein nächster Workshop der Universität Hildesheim zum Thema Information Retrieval, organisiert mit der Fachgruppe Information Retrieval der Gesellschaft für Informatik, kündigt sich bereits für den 9. bis 13- Oktober 2006 an."
-
Caumanns, J.; Hollfelde, S.: Web-basierte Repositories zur Speicherung, Verwaltung und Wiederverwendung multimedialer Lernfragmente (2001)
0.03
0.03236146 = product of:
0.12944584 = sum of:
0.0073573855 = weight(_text_:information in 5881) [ClassicSimilarity], result of:
0.0073573855 = score(doc=5881,freq=2.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.116372846 = fieldWeight in 5881, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=5881)
0.122088455 = weight(_text_:modell in 5881) [ClassicSimilarity], result of:
0.122088455 = score(doc=5881,freq=4.0), product of:
0.21656582 = queryWeight, product of:
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.036014426 = queryNorm
0.5637476 = fieldWeight in 5881, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
6.0133076 = idf(docFreq=293, maxDocs=44218)
0.046875 = fieldNorm(doc=5881)
0.25 = coord(2/8)
- Abstract
- Der Einsatz von modularen Lernfragmenten zur automatischen Kurskomposition findet eine ständig wachsende Popularität im E-Learning Bereich, da sich hierdurch insbesondere eine hohe Flexibilität bei der Erstellung von Kursen erzielen lässt. Schwierig erweist sich in diesem Kontext jedoch die adäquate Repräsentation von inhaltlichen Zusammenhängen. In diesem Papier beschreiben wir ein flexibles Modell zur Kodierung von semantischen Beziehungen zwischen Lernfragmenten. Dieses Modell, das im Rahmen des Projektes Teachware on Demand eingesetzt wird, ermöglicht die effiziente Auswahl und Strukturierung von Kursen, da sowohl redundante Informationen kodiert, als auch weniger geeignete Fragmente zur Vervollständigung eines Kurses selektiert werden können
- Source
- Information Research & Content Management: Orientierung, Ordnung und Organisation im Wissensmarkt; 23. DGI-Online-Tagung der DGI und 53. Jahrestagung der Deutschen Gesellschaft für Informationswissenschaft und Informationspraxis e.V. DGI, Frankfurt am Main, 8.-10.5.2001. Proceedings. Hrsg.: R. Schmidt
-
Chen, K.-H.: Evaluating Chinese text retrieval with multilingual queries (2002)
0.03
0.026641823 = product of:
0.07104486 = sum of:
0.008583616 = weight(_text_:information in 1851) [ClassicSimilarity], result of:
0.008583616 = score(doc=1851,freq=2.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.13576832 = fieldWeight in 1851, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0546875 = fieldNorm(doc=1851)
0.0509725 = weight(_text_:retrieval in 1851) [ClassicSimilarity], result of:
0.0509725 = score(doc=1851,freq=8.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.46789268 = fieldWeight in 1851, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0546875 = fieldNorm(doc=1851)
0.011488751 = product of:
0.03446625 = sum of:
0.03446625 = weight(_text_:29 in 1851) [ClassicSimilarity], result of:
0.03446625 = score(doc=1851,freq=2.0), product of:
0.1266875 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.036014426 = queryNorm
0.27205724 = fieldWeight in 1851, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.0546875 = fieldNorm(doc=1851)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- This paper reports the design of a Chinese test collection with multilingual queries and the application of this test collection to evaluate information retrieval Systems. The effective indexing units, IR models, translation techniques, and query expansion for Chinese text retrieval are identified. The collaboration of East Asian countries for construction of test collections for cross-language multilingual text retrieval is also discussed in this paper. As well, a tool is designed to help assessors judge relevante and gather the events of relevante judgment. The log file created by this tool will be used to analyze the behaviors of assessors in the future.
- Source
- Knowledge organization. 29(2002) nos.3/4, S.156-170
-
Freitas-Junior, H.R.; Ribeiro-Neto, B.A.; Freitas-Vale, R. de; Laender, A.H.F.; Lima, L.R.S. de: Categorization-driven cross-language retrieval of medical information (2006)
0.03
0.025403352 = product of:
0.06774227 = sum of:
0.0150182 = weight(_text_:information in 5282) [ClassicSimilarity], result of:
0.0150182 = score(doc=5282,freq=12.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.23754507 = fieldWeight in 5282, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=5282)
0.044591647 = weight(_text_:retrieval in 5282) [ClassicSimilarity], result of:
0.044591647 = score(doc=5282,freq=12.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.40932083 = fieldWeight in 5282, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=5282)
0.00813243 = product of:
0.024397288 = sum of:
0.024397288 = weight(_text_:22 in 5282) [ClassicSimilarity], result of:
0.024397288 = score(doc=5282,freq=2.0), product of:
0.12611638 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036014426 = queryNorm
0.19345059 = fieldWeight in 5282, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=5282)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- The Web has become a large repository of documents (or pages) written in many different languages. In this context, traditional information retrieval (IR) techniques cannot be used whenever the user query and the documents being retrieved are in different languages. To address this problem, new cross-language information retrieval (CLIR) techniques have been proposed. In this work, we describe a method for cross-language retrieval of medical information. This method combines query terms and related medical concepts obtained automatically through a categorization procedure. The medical concepts are used to create a linguistic abstraction that allows retrieval of information in a language-independent way, minimizing linguistic problems such as polysemy. To evaluate our method, we carried out experiments using the OHSUMED test collection, whose documents are written in English, with queries expressed in Portuguese, Spanish, and French. The results indicate that our cross-language retrieval method is as effective as a standard vector space model algorithm operating on queries and documents in the same language. Further, our results are better than previous results in the literature.
- Date
- 22. 7.2006 16:46:36
- Source
- Journal of the American Society for Information Science and Technology. 57(2006) no.4, S.501-510
-
Grefenstette, G.: ¬The problem of cross-language information retrieval (1998)
0.03
0.025290318 = product of:
0.10116127 = sum of:
0.025486732 = weight(_text_:information in 6301) [ClassicSimilarity], result of:
0.025486732 = score(doc=6301,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.40312737 = fieldWeight in 6301, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6301)
0.07567454 = weight(_text_:retrieval in 6301) [ClassicSimilarity], result of:
0.07567454 = score(doc=6301,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.6946405 = fieldWeight in 6301, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6301)
0.25 = coord(2/8)
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Ballesteros, L.; Croft, W.B.: Statistical methods for cross-language information retrieval (1998)
0.03
0.025290318 = product of:
0.10116127 = sum of:
0.025486732 = weight(_text_:information in 6303) [ClassicSimilarity], result of:
0.025486732 = score(doc=6303,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.40312737 = fieldWeight in 6303, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6303)
0.07567454 = weight(_text_:retrieval in 6303) [ClassicSimilarity], result of:
0.07567454 = score(doc=6303,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.6946405 = fieldWeight in 6303, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6303)
0.25 = coord(2/8)
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Picchi, E.; Peters, C.: Cross-language information retrieval : a system for comparable corpus querying (1998)
0.03
0.025290318 = product of:
0.10116127 = sum of:
0.025486732 = weight(_text_:information in 6305) [ClassicSimilarity], result of:
0.025486732 = score(doc=6305,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.40312737 = fieldWeight in 6305, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6305)
0.07567454 = weight(_text_:retrieval in 6305) [ClassicSimilarity], result of:
0.07567454 = score(doc=6305,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.6946405 = fieldWeight in 6305, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6305)
0.25 = coord(2/8)
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Yamabana, K.; Muraki, K.; Doi, S.; Kamei, S.: ¬A language conversion front-end for cross-language information retrieval (1998)
0.03
0.025290318 = product of:
0.10116127 = sum of:
0.025486732 = weight(_text_:information in 6306) [ClassicSimilarity], result of:
0.025486732 = score(doc=6306,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.40312737 = fieldWeight in 6306, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6306)
0.07567454 = weight(_text_:retrieval in 6306) [ClassicSimilarity], result of:
0.07567454 = score(doc=6306,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.6946405 = fieldWeight in 6306, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6306)
0.25 = coord(2/8)
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Davis, M.W.: On the effective use of large parallel corpora in cross-language text retrieval (1998)
0.02
0.024121093 = product of:
0.09648437 = sum of:
0.020809827 = weight(_text_:information in 6302) [ClassicSimilarity], result of:
0.020809827 = score(doc=6302,freq=4.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.3291521 = fieldWeight in 6302, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6302)
0.07567454 = weight(_text_:retrieval in 6302) [ClassicSimilarity], result of:
0.07567454 = score(doc=6302,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.6946405 = fieldWeight in 6302, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6302)
0.25 = coord(2/8)
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Frâncu, V.; Sabo, C.-N.: Implementation of a UDC-based multilingual thesaurus in a library catalogue : the case of BiblioPhil (2010)
0.02
0.023366608 = product of:
0.062310956 = sum of:
0.014714771 = weight(_text_:information in 3697) [ClassicSimilarity], result of:
0.014714771 = score(doc=3697,freq=8.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.23274569 = fieldWeight in 3697, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=3697)
0.03783727 = weight(_text_:retrieval in 3697) [ClassicSimilarity], result of:
0.03783727 = score(doc=3697,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.34732026 = fieldWeight in 3697, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=3697)
0.009758915 = product of:
0.029276744 = sum of:
0.029276744 = weight(_text_:22 in 3697) [ClassicSimilarity], result of:
0.029276744 = score(doc=3697,freq=2.0), product of:
0.12611638 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036014426 = queryNorm
0.23214069 = fieldWeight in 3697, 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=3697)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- In order to enhance the use of Universal Decimal Classification (UDC) numbers in information retrieval, the authors have represented classification with multilingual thesaurus descriptors and implemented this solution in an automated way. The authors illustrate a solution implemented in a BiblioPhil library system. The standard formats used are UNIMARC for subject authority records (i.e. the UDC-based multilingual thesaurus) and MARC XML support for data transfer. The multilingual thesaurus was built according to existing standards, the constituent parts of the classification notations being used as the basis for search terms in the multilingual information retrieval. The verbal equivalents, descriptors and non-descriptors, are used to expand the number of concepts and are given in Romanian, English and French. This approach saves the time of the indexer and provides more user-friendly and easier access to the bibliographic information. The multilingual aspect of the thesaurus enhances information access for a greater number of online users
- Date
- 22. 7.2010 20:40:56
- Theme
- Klassifikationssysteme im Online-Retrieval
-
Hull, D.A.; Grefenstette, G.: Querying across languages : a dictionary-based approach to multilingual information retrieval (1996)
0.02
0.021075265 = product of:
0.08430106 = sum of:
0.021238944 = weight(_text_:information in 1947) [ClassicSimilarity], result of:
0.021238944 = score(doc=1947,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.3359395 = fieldWeight in 1947, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.078125 = fieldNorm(doc=1947)
0.06306212 = weight(_text_:retrieval in 1947) [ClassicSimilarity], result of:
0.06306212 = score(doc=1947,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.5788671 = fieldWeight in 1947, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.078125 = fieldNorm(doc=1947)
0.25 = coord(2/8)
- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.484-492
- Source
- Proceedings of the 19th annual international conference on research and development in information retrieval. Ed.: H.P. Frei
-
Larkey, L.S.; Connell, M.E.: Structured queries, language modelling, and relevance modelling in cross-language information retrieval (2005)
0.02
0.020685311 = product of:
0.055160828 = sum of:
0.010619472 = weight(_text_:information in 1022) [ClassicSimilarity], result of:
0.010619472 = score(doc=1022,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.16796975 = fieldWeight in 1022, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=1022)
0.036408927 = weight(_text_:retrieval in 1022) [ClassicSimilarity], result of:
0.036408927 = score(doc=1022,freq=8.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.33420905 = fieldWeight in 1022, product of:
2.828427 = tf(freq=8.0), with freq of:
8.0 = termFreq=8.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=1022)
0.00813243 = product of:
0.024397288 = sum of:
0.024397288 = weight(_text_:22 in 1022) [ClassicSimilarity], result of:
0.024397288 = score(doc=1022,freq=2.0), product of:
0.12611638 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036014426 = queryNorm
0.19345059 = fieldWeight in 1022, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.0390625 = fieldNorm(doc=1022)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- Two probabilistic approaches to cross-lingual retrieval are in wide use today, those based on probabilistic models of relevance, as exemplified by INQUERY, and those based on language modeling. INQUERY, as a query net model, allows the easy incorporation of query operators, including a synonym operator, which has proven to be extremely useful in cross-language information retrieval (CLIR), in an approach often called structured query translation. In contrast, language models incorporate translation probabilities into a unified framework. We compare the two approaches on Arabic and Spanish data sets, using two kinds of bilingual dictionaries--one derived from a conventional dictionary, and one derived from a parallel corpus. We find that structured query processing gives slightly better results when queries are not expanded. On the other hand, when queries are expanded, language modeling gives better results, but only when using a probabilistic dictionary derived from a parallel corpus. We pursue two additional issues inherent in the comparison of structured query processing with language modeling. The first concerns query expansion, and the second is the role of translation probabilities. We compare conventional expansion techniques (pseudo-relevance feedback) with relevance modeling, a new IR approach which fits into the formal framework of language modeling. We find that relevance modeling and pseudo-relevance feedback achieve comparable levels of retrieval and that good translation probabilities confer a small but significant advantage.
- Date
- 26.12.2007 20:22:11
- Source
- Information processing and management. 41(2005) no.3, S.457-474
-
Sheridan, P.; Ballerini, J.P.; Schäuble, P.: Building a large multilingual test collection from comparable news documents (1998)
0.02
0.020649457 = product of:
0.08259783 = sum of:
0.020809827 = weight(_text_:information in 6298) [ClassicSimilarity], result of:
0.020809827 = score(doc=6298,freq=4.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.3291521 = fieldWeight in 6298, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6298)
0.061788 = weight(_text_:retrieval in 6298) [ClassicSimilarity], result of:
0.061788 = score(doc=6298,freq=4.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.5671716 = fieldWeight in 6298, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6298)
0.25 = coord(2/8)
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Evans, D.A.; Handerson, S.K.; Monarch, I.A.; Pereiro, J.; Delon, L.; Hersch, W.R.: Mapping vocabularies using latent semantics (1998)
0.02
0.020649457 = product of:
0.08259783 = sum of:
0.020809827 = weight(_text_:information in 6304) [ClassicSimilarity], result of:
0.020809827 = score(doc=6304,freq=4.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.3291521 = fieldWeight in 6304, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.09375 = fieldNorm(doc=6304)
0.061788 = weight(_text_:retrieval in 6304) [ClassicSimilarity], result of:
0.061788 = score(doc=6304,freq=4.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.5671716 = fieldWeight in 6304, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.09375 = fieldNorm(doc=6304)
0.25 = coord(2/8)
- Series
- The Kluwer International series on information retrieval
- Source
- Cross-language information retrieval. Ed.: G. Grefenstette
-
Tsai, M.-.F.; Chen, H.-H.; Wang, Y.-T.: Learning a merge model for multilingual information retrieval (2011)
0.02
0.02004262 = product of:
0.05344699 = sum of:
0.013709677 = weight(_text_:information in 2750) [ClassicSimilarity], result of:
0.013709677 = score(doc=2750,freq=10.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.21684799 = fieldWeight in 2750, product of:
3.1622777 = tf(freq=10.0), with freq of:
10.0 = termFreq=10.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.0390625 = fieldNorm(doc=2750)
0.03153106 = weight(_text_:retrieval in 2750) [ClassicSimilarity], result of:
0.03153106 = score(doc=2750,freq=6.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.28943354 = fieldWeight in 2750, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.0390625 = fieldNorm(doc=2750)
0.008206251 = product of:
0.024618752 = sum of:
0.024618752 = weight(_text_:29 in 2750) [ClassicSimilarity], result of:
0.024618752 = score(doc=2750,freq=2.0), product of:
0.1266875 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.036014426 = queryNorm
0.19432661 = fieldWeight in 2750, 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=2750)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- This paper proposes a learning approach for the merging process in multilingual information retrieval (MLIR). To conduct the learning approach, we present a number of features that may influence the MLIR merging process. These features are mainly extracted from three levels: query, document, and translation. After the feature extraction, we then use the FRank ranking algorithm to construct a merge model. To the best of our knowledge, this practice is the first attempt to use a learning-based ranking algorithm to construct a merge model for MLIR merging. In our experiments, three test collections for the task of crosslingual information retrieval (CLIR) in NTCIR3, 4, and 5 are employed to assess the performance of our proposed method. Moreover, several merging methods are also carried out for a comparison, including traditional merging methods, the 2-step merging strategy, and the merging method based on logistic regression. The experimental results show that our proposed method can significantly improve merging quality on two different types of datasets. In addition to the effectiveness, through the merge model generated by FRank, our method can further identify key factors that influence the merging process. This information might provide us more insight and understanding into MLIR merging.
- Date
- 29. 1.2016 20:34:33
- Source
- Information processing and management. 47(2011) no.5, S.635-646
-
Seo, H.-C.; Kim, S.-B.; Rim, H.-C.; Myaeng, S.-H.: lmproving query translation in English-Korean Cross-language information retrieval (2005)
0.02
0.020023605 = product of:
0.05339628 = sum of:
0.012743366 = weight(_text_:information in 1023) [ClassicSimilarity], result of:
0.012743366 = score(doc=1023,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.20156369 = fieldWeight in 1023, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.046875 = fieldNorm(doc=1023)
0.030894 = weight(_text_:retrieval in 1023) [ClassicSimilarity], result of:
0.030894 = score(doc=1023,freq=4.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.2835858 = fieldWeight in 1023, product of:
2.0 = tf(freq=4.0), with freq of:
4.0 = termFreq=4.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.046875 = fieldNorm(doc=1023)
0.009758915 = product of:
0.029276744 = sum of:
0.029276744 = weight(_text_:22 in 1023) [ClassicSimilarity], result of:
0.029276744 = score(doc=1023,freq=2.0), product of:
0.12611638 = queryWeight, product of:
3.5018296 = idf(docFreq=3622, maxDocs=44218)
0.036014426 = queryNorm
0.23214069 = fieldWeight in 1023, 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=1023)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- Query translation is a viable method for cross-language information retrieval (CLIR), but it suffers from translation ambiguities caused by multiple translations of individual query terms. Previous research has employed various methods for disambiguation, including the method of selecting an individual target query term from multiple candidates by comparing their statistical associations with the candidate translations of other query terms. This paper proposes a new method where we examine all combinations of target query term translations corresponding to the source query terms, instead of looking at the candidates for each query term and selecting the best one at a time. The goodness value for a combination of target query terms is computed based on the association value between each pair of the terms in the combination. We tested our method using the NTCIR-3 English-Korean CLIR test collection. The results show some improvements regardless of the association measures we used.
- Date
- 26.12.2007 20:22:38
- Source
- Information processing and management. 41(2005) no.3, S.507-522
-
Ménard, E.: Ordinary image retrieval in a multilingual context : a comparison of two indexing vocabularies (2010)
0.02
0.01902521 = product of:
0.050733894 = sum of:
0.008495578 = weight(_text_:information in 3946) [ClassicSimilarity], result of:
0.008495578 = score(doc=3946,freq=6.0), product of:
0.06322253 = queryWeight, product of:
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.036014426 = queryNorm
0.1343758 = fieldWeight in 3946, product of:
2.4494898 = tf(freq=6.0), with freq of:
6.0 = termFreq=6.0
1.7554779 = idf(docFreq=20772, maxDocs=44218)
0.03125 = fieldNorm(doc=3946)
0.035673317 = weight(_text_:retrieval in 3946) [ClassicSimilarity], result of:
0.035673317 = score(doc=3946,freq=12.0), product of:
0.10894058 = queryWeight, product of:
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.036014426 = queryNorm
0.32745665 = fieldWeight in 3946, product of:
3.4641016 = tf(freq=12.0), with freq of:
12.0 = termFreq=12.0
3.024915 = idf(docFreq=5836, maxDocs=44218)
0.03125 = fieldNorm(doc=3946)
0.0065650004 = product of:
0.019695 = sum of:
0.019695 = weight(_text_:29 in 3946) [ClassicSimilarity], result of:
0.019695 = score(doc=3946,freq=2.0), product of:
0.1266875 = queryWeight, product of:
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.036014426 = queryNorm
0.15546128 = fieldWeight in 3946, product of:
1.4142135 = tf(freq=2.0), with freq of:
2.0 = termFreq=2.0
3.5176873 = idf(docFreq=3565, maxDocs=44218)
0.03125 = fieldNorm(doc=3946)
0.33333334 = coord(1/3)
0.375 = coord(3/8)
- Abstract
- Purpose - This paper seeks to examine image retrieval within two different contexts: a monolingual context where the language of the query is the same as the indexing language and a multilingual context where the language of the query is different from the indexing language. The study also aims to compare two different approaches for the indexing of ordinary images representing common objects: traditional image indexing with the use of a controlled vocabulary and free image indexing using uncontrolled vocabulary. Design/methodology/approach - This research uses three data collection methods. An analysis of the indexing terms was employed in order to examine the multiplicity of term types assigned to images. A simulation of the retrieval process involving a set of 30 images was performed with 60 participants. The quantification of the retrieval performance of each indexing approach was based on the usability measures, that is, effectiveness, efficiency and satisfaction of the user. Finally, a questionnaire was used to gather information on searcher satisfaction during and after the retrieval process. Findings - The results of this research are twofold. The analysis of indexing terms associated with all the 3,950 images provides a comprehensive description of the characteristics of the four non-combined indexing forms used for the study. Also, the retrieval simulation results offers information about the relative performance of the six indexing forms (combined and non-combined) in terms of their effectiveness, efficiency (temporal and human) and the image searcher's satisfaction. Originality/value - The findings of the study suggest that, in the near future, the information systems could benefit from allowing an increased coexistence of controlled vocabularies and uncontrolled vocabularies, resulting from collaborative image tagging, for example, and giving the users the possibility to dynamically participate in the image-indexing process, in a more user-centred way.
- Date
- 29. 8.2010 10:51:07
