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Reinisch, F.: Wer suchet - der findet? : oder Die Überwindung der sprachlichen Grenzen bei der Suche in Volltextdatenbanken (2000)
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- Date
- 22. 7.2000 17:48:06
- Imprint
- Innsbruck : Österreichische Online-Benutzergruppe
- Source
- Dokumente und Datenbanken in elektronischen Netzen: Tagungsberichte vom 6. und 7. Österreichischen Online-Informationstreffen bzw. vom 7. und 8. Österreichischen Dokumentartag, Schloß Seggau, Seggauberg bei Leibnitz, 26.-29. September 1995, Congresszentrum Igls bei Innsbruck, 21.-24. Oktober 1997. Hrsg.: E. Pipp
- Type
- a
-
Preston, L.A.; Ebbs, C.M.; Luther, J.: 'Full text' access evaluation : are we getting the real thing? (1998)
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- Abstract
- Examines the comparative value of full text access and journal subscription through a sampling of journal issues available online from the Information Access Corporation and in print at James Madison University in Virginia. Presents a model for assessing the value of full text online subscriptions which can be used to evaluate journal subscription, back file retention, document delivery options, index selection, and online access
- Footnote
- Part of an issue devoted to 'Experimentation and collaboration: creating series for a new millenium', part 2, Proceedings of the North American Serials Interest Group, Inc.'s 12th annual conference, 29 May - 1 June 1997, University of Michigan Ann Arbor, Michigan
- Type
- a
-
Tenopir, C.: Searching by controlled vocabulary or free text (1987)
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- Source
- Library journal. 112(1987) Nov.15, S.58-29
- Type
- a
-
Albus, W.; Smulders, H.: Doeltreffend zoeken in volledige teksten : 1. full-text retrieval bij de HavenInformatieBank (1998)
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- Abstract
- At Rotterdam Ports Authority in the Netherlands the Habour information database includes a press cuttings service and various online databases. To enable research staff to have direct access to information the POINT (Point Information Net) was begun in 1993. Using Verity software POINT provides simultaneously full text searching on a range of databases. The software uses current Web indexing technqiues to overcome the problems of excessive recall and low precision. A key element is the system's ability to recognise word combinations
- Date
- 29. 7.1998 19:54:49
- Type
- a
-
Böhle, K.; Riehm, U.: German fulltexts in working contexts : empirical findings on how end-users make use of fulltext databases (1989)
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- Abstract
- Reports the result of a brief review of West German full text data bases and a user survey of over 40 users in the fields of medicine, law and economics. Questions common assumptions about the advantages and disadvantages of full text data bases.
- Source
- Online Information 89. Proceedings of the 13th International Online Information Meeting, London, 12-14 December 1989
- Type
- a
-
Pipp, E.: Volltextdatenbanken im Vergleich (2001)
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- Date
- 29. 9.2001 11:28:25
- Type
- a
-
Yetim, F.: ¬Ein intertextuelles Hypertextmodell als Weiterentwicklung eines Volltextanalysesystems (1990)
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- Source
- Informationsmethoden: Neue Ansätze und Techniken; Deutscher Dokumentartag 1989, 4.-6.10.1989, Universität Bremen, Proceedings. Hrsg.: W. Neubauer u.a
- Type
- a
-
Enderle, W.: Neue Wege der bibliothekarischen Informationserschließung : von der Erschließung unselbständiger Literatur über Volltextindizierung bis zu Hypertext- und Expertensystemen (1994)
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- Abstract
- Die bibliothekarische Informationserschließung war unist bislang durch den OPAC geprägt, der im wesentlichen die Monographien und Zeitschriften einer Bibliothek erschließt. Es werden 2 neue Bereiche skizziert, die in Zukunft ebenfalls Teil der bibliothekarischen Informationserschließung sein können und werden: die Erschließung unselbständiger Literatur und der Einsatz automatisierter 'reference and information services'. Im ersten Fall ist die Entwicklung bereits weit vorangeschritten, Verbundsysteme und Library Suppliers bieten bereits Inhaltsdaten von Zeitschriften als Fremdleistung an. Im zweiten Fall ist die Entwicklung, vor allem im angloamerikanischen Raum, noch - trotz zahlreicher Projekte - in den Anfängen. Der Einsatz wissensbasierter Systeme in diesem Bereich macht die Aufgaben hier besonders komplex, biete zugleich aber hanz neue Lösungsmöglichkeiten an, wie am Beispiel einiger amerikanischer Projekte dokumentiert wird. Wesentlich ist, daß Informationserschließungssysteme, wie sie ansatzweise im Internet bereits eingesetzt werden, den gesamten bereich elektronischer wie herkömmlicher Information umfassen, um einen allgemeinen und umfassenden Einstieg für den Informationssuchenden zu bieten
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- a
-
Rosemann, L.: ¬Die Volltextabfrage und das Alleinstellungsmerkmal des physischen Buches (2006)
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- Content
- "Mit Google Print bzw. mittlerweile Google Book Search und dem Projekt zur Übernahme eines brancheneigenen Portals zur Pflege und Bereitstellung digitaler Daten aus Büchern namens "Volltextsuche online" initiiert durch den Börsenverein des Deutschen Buchhandels tritt ein Thema auf den Plan, das im deutschen Sprachraum lange vernachlässigt wurde: allgemein gesprochen, die Notwendigkeit der Texterschließung durch Indexierung - sei sie gedruckt in Form von Registern im Anhang von Sach- und wissenschaftlichen Büchern oder ungedruckt in Form sog. Volltextabfragen per Suchmaske am Computer. Angesichts der exponentiell wachsenden Menge an Wissen ist es gut, wenn hierzu Überlegungen angestellt werden und damit die Chance besteht, neben der wirtschaftlichen auch über die wissenstheoretische Dimension dieser Dienste nachzudenken. Zweifellos wird die Bedeutung der Indexierung von Fließtext aus wissenstheoretischer Sicht in Zukunft noch weiter wachsen und bedeutet im Falle einer Online-Plattform (wenn sie denn in naher Zukunft eine hinreichend große Menge an Büchern in ihrem Datenbestand aufweisen wird) die Erfüllung eines Traumes für die wissenschaftliche Arbeit: Es ist fantastisch, in Millisekunden das Vorhandensein von Personen, Termen, Phrasen und Wortkomposita zu ermitteln, um die Ein- bzw. Nichteinschlägigkeit eines Buches und - mehr noch -vieler Bücher für die eigene Arbeit eindeutig beantworten zu können. Es ist fantastisch, im Trefferfall die gesuchte Information sogleich auf dem Monitor exzerpieren zu können oder sich auch bei ausbleibenden Treffern das Durcharbeiten eines ganzen Buches, vielleicht sogar einer halben Bibliothek ersparen zu können. Dabei ist das letztere Resultat mindestens eine genauso wichtige Information wie die erste, denn auch sie wird- man darf fast sagen, so gut wie immer - zu einer unglaublichen Ersparnis an Zeit verhelfen; hier bedeutet allein schon die Verringerung der Datenmenge einen Zuwachs an Wissen unter minimalem Zeitaufwand. Angesichts dieser Diagnose ist die These zu wagen, die digitale Revolution beginnt erst wirklich bei der Nutzung der Volltexte selbst als Datenquelle zur Wissensabfrage.
. . . Ich plädiere hier aus den oben genannten wissenstheoretischen Gründen nicht nur für die Aufrechterhaltung eines Mindestmaßes an Registern und Indexen im Anhang von physischen Büchern, sondern sogar für deren Ausbau, deren standardmäßige Zugabe bei Sach- und wissenschaftlichen Büchern gerade angesichts der Volltextnutzung durch Online-Abfragen. Warum? Hierzu sechs Argumente: 1. Wie oben bereits angerissen, lehrt die Erfahrung bei CD-ROM-Zugaben zu opulenten Werken, dass Parallelmedien mit Parallelinhalten von den Nutzern nicht wirklich angenommen werden; es ist umständlich, zur Auffindung bestimmter Textstellen den Computer befragen zu müssen und die Fundstellen dann zwischen zwei Buchdeckeln nachzuschlagen. 2. Über frei wählbare Suchbegriffe seitens des Nutzers ist noch keine Qualität der Suchergebnisse garantiert. Erst das Einrechnen entsprechender Verweisungsbegriffe und Synonyme in die Suchabfrage führt zu Qualität des Ergebnisses. Die scheinbar eingesparten Kosten einer einmaligen bzw. abonnementartigen Investition in eine Online-Verfügbarkeit der Buchinhalte vonseiten der Verlage werden dann über die Hintertür doch wieder fällig, wenn sich nämlich herausstellt, dass Nutzer bei der von ihnen gesuchten Information nicht fündig werden, weil sie unter dem "falschen", d.h. entweder ihnen nicht bekannten oder einem ihnen gerade nicht präsenten Schlagwort gesucht haben. Die Online-Suchabfrage, die auf den ersten Blick höchst nutzerfreundlich erscheint, da eine ungeheure Menge an Titeln die Abfrage umfasst, erweist sich womöglich als wenig brauchbar, wenn sich die Trefferqualität aus den genannten Gründen als beschränkt herausstellt. 3. Nur bei entsprechenden Restriktionen des Zugangs bzw. der präsentierten Textausschnitte werden die Verlage es gewährleistet sehen, dass die Nutzerin, der Nutzer nicht vom Kauf des physischen Buches Abstand nehmen. Nur wenn die Nutzer wissen, dass ihnen gerade jene Informationen am Bildschirm vorenthalten werden, die sie im zu erwerbenden Buch mit Gewissheit finden werden, werden sie das Buch noch erwerben wollen. Wer auf die Schnelle nur ein Kochrezept aus einem teuer bebilderten Kochbuch der Oberklasse abrufen kann, wird das teure Kochbuch eben nicht mehr kaufen. Analog stellt sich die Frage, ob nicht aus diesem Grunde auch Bibliotheken erwägen werden, angesichts der elektronischen Präsenz teuerer physischer Bücher auf den Erwerb der Letzteren zu verzichten, wohl wissend, dass den Wissenschaftlern im Zweifel einige Mausklicks genügen, um die gewünschte Begriffsrecherche erschöpfend beantwortet zu finden.
4. Vermutlich wird sich aufgrund der genannten Gründe der Buchservice Volltextsuche als heterogen darstellen: Einige Verlage werden gar nicht mitspielen, andere werden ein Buch im Vollzugriff, ein anderes nur zum Teil, ein drittes nur als Metainformation usw. indizieren lassen. Dies wird letztlich ebenfalls die Trefferqualität schmälern, da der Nutzer dann wiederum wissen muss, genau welche Informationen und Texte ihm bei seiner Suche vorenthalten werden. Das gedruckte Sachbuch wird gegen seinen eigenen digitalen Klon ein Alleinstellungsmerkmal brauchen, um weiterhin attraktiv zu sein. 5. Ein solches Alleinstellungsmerkmal würde m.E. maßgeblich durch die Erstellung von gedruckten Registern bereits in der Druckausgabe erreicht werden. Damit würde die Druckausgabe tatsächlich an Wert gewinnen und der Buchkäufer erhielte einen echten Mehrwert. Zum einen spiegelt sich bereits in der Erstellung konventioneller gedruckter Register die zweite digitale Revolution wider: Moderne Registererstellung basiert heutzutage ebenfalls auf der digitalen Verwertung des Volltextes. Zum anderen erfordert das "Registermachen" zugleich die Erbringung jener o.g. sachdienlichen Mehrinformationen wie Verweisungsbegriffe, vernünftige Klassifizierungen, nicht-redundante Begriffsauswahl etc., die nur begrenzt automatisierbar sind und Fachwissen erfordern. Erst diese beiden Komponenten lassen die Indexierung schlussendlich zu einer hochwertigen Aufbereitung sequentieller Information werden. 6. Genau diese Mehr- und Metainformationen, die die vorausgegangene Erstellung eines Print-Vollregisters geliefert hat, lassen sich dann in den Suchalgorithmus der Online-Suche zur Qualitätssteigerung der Treffer einrechnen."
- Type
- a
-
Witt, M.: Au sujet des mots-clés (1997)
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- Abstract
- Information research using keywords is largely ignored by readers but in medium sized libraries such as that of the City of Science and Industry (Paris), with a multimedia collection of some 200.000 documents, it is the most effective tool. The reader, however, needs guidance in using this technique, and in refining searches to reduce noise. Examples are given demonstrating how keyword searches can identify non-indexed material, documents in other languages, and collective authors
- Date
- 29. 1.1996 16:50:24
29. 7.1998 18:19:41
- Type
- a
-
Blair, D.C.; Maron, M.E.: ¬An evaluation of retrieval effectiveness for a full-text document-retrieval system (1985)
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- Footnote
- Vgl. auch : Salton, G.: Another look ... Comm. ACM 29(1986) S.S.648-656; Blair, D.C.: Full text retrieval ... Int. Class. 13(1986) S.18-23: Blair, D.C., M.E. Maron: Full-text information retrieval ... Inf. proc. man. 26(1990) S.437-447.
- Type
- a
-
Salton, G.: Another look at automatic text-retrieval systems (1986)
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- Footnote
- Bezugnahme auf: Blair, D.C.: An evaluation of retrieval effectiveness for a full-text document-retrieval system. Comm. ACM 28(1985) S.280-299. - Vgl. auch: Blair, D.C.: Full text retrieval ... Int. Class. 13(1986) S.18-23; Blair, D.C., M.E. Maron: full-text information retrieval ... Inf. Proc. Man. 26(1990) S.437-447.
- Source
- Communications of the Association for Computing Machinery. 29(1986), S.648-656
- Type
- a
-
Wenzel, F.: Semantische Eingrenzung im Freitext-Retrieval auf der Basis morphologischer Segmentierungen (1980)
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- Abstract
- The basic problem in freetext retrieval is that the retrieval language is not properly adapted to that of the author. Morphological segmentation, where words with the same root are grouped together in the inverted file, is a good eliminator of noise and information loss, providing high recall but low precision
- Source
- Nachrichten für Dokumentation. 31(1980) H.1, S.29-35
- Type
- a
-
Stegentritt, E.: EMIR: Multilinguales Freitextretrieval Projekt (1992)
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- Source
- Mensch und Maschine: Informationelle Schnittstellen der Kommunikation. Proc. des 3. Int. Symposiums für Informationswissenschaft (ISI'92), 5.-7.11.1992 in Saarbrücken. Hrsg.: H.H. Zimmermann, H.-D. Luckhardt u. A. Schulz
- Type
- a
-
Kristensen, J.: Expanding end-users' query statements for free text searching with a search-aid thesaurus (1993)
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- Abstract
- Tests the effectiveness of a thesaurus as a search-aid in free text searching of a full text database. A set of queries was searched against a large full text database of newspaper articles. The thesaurus contained equivalence, hierarchical and associative relationships. Each query was searched in five modes: basic search, synonym search, narrower term search, related term search, and union of all previous searches. The searches were analyzed in terms of relative recall and precision
- Source
- Information processing and management. 29(1993) no.6, S.733-744
- Type
- a
-
Molto, M.: Improving full text search performance through textual analysis (1993)
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- Abstract
- Explores the potential of text analysis as a tool in full text search and design improvement. Reports on a trial analysis performed in the domain of family history. The findings offered insights into possible gains and losses in using one search or design strategy versus another and strong evidence was provided to the potential of text analysis. Makes search and design recommendation
- Source
- Information processing and management. 29(1993) no.5, S.614-632
- Type
- a
-
Markey, K.; Atherton, P.; Newton, C.: ¬An analysis of controlled vocabulary and free text search statements in online searches (1980)
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- Source
- Online review. 4(1980), S.225-236
- Theme
- Verbale Doksprachen im Online-Retrieval
- Type
- a
-
Leppanen, E.: Homografiongelma tekstihaussa ja homografien disambiguoinnin vaikutukset (1996)
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- Abstract
- Homonymy is known to often cause false drops in free text searching in a full text database. The problem is quite common and difficult to avoid in Finnish, but nobody has examined it before. Reports on a study that examined the frequency of, and solutions to, the homonymy problem, based on searches made in a Finnish full text database containing about 55.000 newspaper articles. The results indicate that homonymy is not a very serious problem in full text searching, with only about 1 search result set out of 4 containing false drops caused by homonymy. Several other reasons for nonrelevance were much more common. However, in some set results there were a considerable number of homonymy errors, so the number seems to be very random. A study was also made into whether homonyms can be disambiguated by syntactic analysis. The result was that 75,2% of homonyms were disambiguated by this method. Verb homonyms were considerably easier to disambiguate than substantives. Although homonymy is not a very big problem it could perhaps easily be eliminated if there was a suitable syntactic analyzer in the IR system
- Date
- 9.12.1997 18:33:29
- Type
- a
-
Tenopir, C.: Full text database retrieval performance (1985)
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- Source
- Online review. 9(1985), S.149-164
- Type
- a
-
Kirkbride, P.: Full text, free text, and controlled vocabulary : strategic search planning (1991)
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- Imprint
- Wilton, CT : Online Inc.
- Source
- Online/CD-ROM '91. Conference, Chicago, IL, 11.-13.11.1991
- Type
- a
