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Wille, J.: Automatisches Klassifizieren bibliographischer Beschreibungsdaten : Vorgehensweise und Ergebnisse (2006)
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- Abstract
- Diese Arbeit befasst sich mit den praktischen Aspekten des Automatischen Klassifizierens bibliographischer Referenzdaten. Im Vordergrund steht die konkrete Vorgehensweise anhand des eigens zu diesem Zweck entwickelten Open Source-Programms COBRA "Classification Of Bibliographic Records, Automatic". Es werden die Rahmenbedingungen und Parameter f¨ur einen Einsatz im bibliothekarischen Umfeld geklärt. Schließlich erfolgt eine Auswertung von Klassifizierungsergebnissen am Beispiel sozialwissenschaftlicher Daten aus der Datenbank SOLIS.
- Content
- [Diplomarbeit Studiengang Bibliothekswesen Fakultät für Informations- und Kommunikationswissenschaften]
- Date
- 10. 9.2006 19:23:31
- Footnote
- http://www.fbi.fh-koeln.de/institut/papers/abschlussarbeiten/abschlussarbeiten_ausgabe.php Vgl. auch: http://eprints.rclis.org/archive/00006659/01/wille_-_automatisches_klassifizieren_bibliographischer_beschreibungsdaten_(diplomarbeit).pdf. Für die Software vgl.: http://blackwinter.de/da/.
- Imprint
- Köln : Fakultät für Informations- und Kommunikationswissenschaften
-
Montesi, M.; Navarrete, T.: Classifying web genres in context : A case study documenting the web genres used by a software engineer (2008)
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- Abstract
- This case study analyzes the Internet-based resources that a software engineer uses in his daily work. Methodologically, we studied the web browser history of the participant, classifying all the web pages he had seen over a period of 12 days into web genres. We interviewed him before and after the analysis of the web browser history. In the first interview, he spoke about his general information behavior; in the second, he commented on each web genre, explaining why and how he used them. As a result, three approaches allow us to describe the set of 23 web genres obtained: (a) the purposes they serve for the participant; (b) the role they play in the various work and search phases; (c) and the way they are used in combination with each other. Further observations concern the way the participant assesses quality of web-based resources, and his information behavior as a software engineer.
- Date
- 1. 8.2008 12:17:23
-
Illing, S.: Automatisiertes klinisches Codieren (2021)
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- Abstract
- Die in diesem Artikel vorgestellte Bachelorarbeit behandelt die Ergebnisse einer Shared Task im Bereich eHealth. Es wird untersucht, ob die Klassifikationsgenauigkeit ausgewählter klinischer Codiersysteme durch den Einsatz von Ensemble-Methoden verbessert werden kann. Entscheidend dafür sind die Werte der Evaluationsmaße Mean Average Precision und F1-Maß.
- Date
- 10.11.2021 19:11:23
- Source
- Information - Wissenschaft und Praxis. 72(2021) H.5/6, S.285-290
-
Kasprzik, A.: Automatisierte und semiautomatisierte Klassifizierung : eine Analyse aktueller Projekte (2014)
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- Abstract
- Das sprunghafte Anwachsen der Menge digital verfügbarer Dokumente gepaart mit dem Zeit- und Personalmangel an wissenschaftlichen Bibliotheken legt den Einsatz von halb- oder vollautomatischen Verfahren für die verbale und klassifikatorische Inhaltserschließung nahe. Nach einer kurzen allgemeinen Einführung in die gängige Methodik beleuchtet dieser Artikel eine Reihe von Projekten zur automatisierten Klassifizierung aus dem Zeitraum 2007-2012 und aus dem deutschsprachigen Raum. Ein Großteil der vorgestellten Projekte verwendet Methoden des Maschinellen Lernens aus der Künstlichen Intelligenz, arbeitet meist mit angepassten Versionen einer kommerziellen Software und bezieht sich in der Regel auf die Dewey Decimal Classification (DDC). Als Datengrundlage dienen Metadatensätze, Abstracs, Inhaltsverzeichnisse und Volltexte in diversen Datenformaten. Die abschließende Analyse enthält eine Anordnung der Projekte nach einer Reihe von verschiedenen Kriterien und eine Zusammenfassung der aktuellen Lage und der größten Herausfordungen für automatisierte Klassifizierungsverfahren.
-
Yao, H.; Etzkorn, L.H.; Virani, S.: Automated classification and retrieval of reusable software components (2008)
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- Abstract
- The authors describe their research which improves software reuse by using an automated approach to semantically search for and retrieve reusable software components in large software component repositories and on the World Wide Web (WWW). Using automation and smart (semantic) techniques, their approach speeds up the search and retrieval of reusable software components, while retaining good accuracy, and therefore improves the affordability of software reuse. A program understanding of software components and natural language understanding of user queries was employed. Then the software component descriptions were compared by matching the resulting semantic representations of the user queries to the semantic representations of the software components to search for software components that best match the user queries. A proof of concept system was developed to test the authors' approach. The results of this proof of concept system were compared to human experts, and statistical analysis was performed on the collected experimental data. The results from these experiments demonstrate that this automated semantic-based approach for software reusable component classification and retrieval is successful when compared to the labor-intensive results from the experts, thus showing that this approach can significantly benefit software reuse classification and retrieval.
-
Brückner, T.; Dambeck, H.: Sortierautomaten : Grundlagen der Textklassifizierung (2003)
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- Abstract
- Rechnung, Kündigung oder Adressänderung? Eingehende Briefe und E-Mails werden immer häufiger von Software statt aufwändig von Menschenhand sortiert. Die Textklassifizierer arbeiten erstaunlich genau. Sie fahnden auch nach ähnlichen Texten und sorgen so für einen schnellen Überblick. Ihre Werkzeuge sind Linguistik, Statistik und Logik
-
Pfeffer, M.: Automatische Vergabe von RVK-Notationen mittels fallbasiertem Schließen (2009)
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- Abstract
- Klassifikation von bibliografischen Einheiten ist für einen systematischen Zugang zu den Beständen einer Bibliothek und deren Aufstellung unumgänglich. Bislang wurde diese Aufgabe von Fachexperten manuell erledigt, sei es individuell nach einer selbst entwickelten Systematik oder kooperativ nach einer gemeinsamen Systematik. In dieser Arbeit wird ein Verfahren zur Automatisierung des Klassifikationsvorgangs vorgestellt. Dabei kommt das Verfahren des fallbasierten Schließens zum Einsatz, das im Kontext der Forschung zur künstlichen Intelligenz entwickelt wurde. Das Verfahren liefert für jedes Werk, für das bibliografische Daten vorliegen, eine oder mehrere mögliche Klassifikationen. In Experimenten werden die Ergebnisse der automatischen Klassifikation mit der durch Fachexperten verglichen. Diese Experimente belegen die hohe Qualität der automatischen Klassifikation und dass das Verfahren geeignet ist, Fachexperten bei der Klassifikationsarbeit signifikant zu entlasten. Auch die nahezu vollständige Resystematisierung eines Bibliothekskataloges ist - mit gewissen Abstrichen - möglich.
- Date
- 22. 8.2009 19:51:28
23. 8.2009 9:46:44
- Series
- Zeitschrift für Bibliothekswesen und Bibliographie : Sonderband ; 96
- Source
- Wissen bewegen - Bibliotheken in der Informationsgesellschaft / 97. Deutscher Bibliothekartag in Mannheim, 2008. Hrsg. von Ulrich Hohoff und Per Knudsen. Bearb. von Stefan Siebert
-
Subramanian, S.; Shafer, K.E.: Clustering (2001)
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- Date
- 11. 2.1997 20:11:23
5. 5.2003 14:17:22
-
Koch, T.; Ardö, A.: Automatic classification of full-text HTML-documents from one specific subject area : DESIRE II D3.6a, Working Paper 2 (2000)
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- Content
- 1 Introduction / 2 Method overview / 3 Ei thesaurus preprocessing / 4 Automatic classification process: 4.1 Matching -- 4.2 Weighting -- 4.3 Preparation for display / 5 Results of the classification process / 6 Evaluations / 7 Software / 8 Other applications / 9 Experiments with universal classification systems / References / Appendix A: Ei classification service: Software / Appendix B: Use of the classification software as subject filter in a WWW harvester.
-
Bock, H.-H.: Datenanalyse zur Strukturierung und Ordnung von Information (1989)
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- Abstract
- Aufgabe der Datenanalyse ist es, Daten zu ordnen, übersichtlich darzustellen, verborgene und natürlich Strukturen zu entdecken, die diesbezüglich wesentlichen Eigenschaften herauszukristallisieren und zweckmäßige Modelle zur Beschreibung von Daten aufzustellen. Es wird ein Einblick in die Methoden und Prinzipien der Datenanalyse vermittelt. Anhand typischer Beispiele wird gezeigt, welche Daten analysiert, welche Strukturen betrachtet, welche Darstellungs- bzw. Ordnungsmethoden verwendet, welche Zielsetzungen verfolgt und welche Bewertungskriterien dabei angewendet werden können. Diskutiert wird auch die angemessene Verwendung der unterschiedlichen Methoden, wobei auf die gefahr und Art von Fehlinterpretationen hingewiesen wird
- Pages
- S.1-22
- Source
- Klassifikation und Ordnung. Tagungsband 12. Jahrestagung der Gesellschaft für Klassifikation, Darmstadt 17.-19.3.1988. Hrsg.: R. Wille
-
Reiner, U.: VZG-Projekt Colibri : Bewertung von automatisch DDC-klassifizierten Titeldatensätzen der Deutschen Nationalbibliothek (DNB) (2009)
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- Abstract
- Das VZG-Projekt Colibri/DDC beschäftigt sich seit 2003 mit automatischen Verfahren zur Dewey-Dezimalklassifikation (Dewey Decimal Classification, kurz DDC). Ziel des Projektes ist eine einheitliche DDC-Erschließung von bibliografischen Titeldatensätzen und eine Unterstützung der DDC-Expert(inn)en und DDC-Laien, z. B. bei der Analyse und Synthese von DDC-Notationen und deren Qualitätskontrolle und der DDC-basierten Suche. Der vorliegende Bericht konzentriert sich auf die erste größere automatische DDC-Klassifizierung und erste automatische und intellektuelle Bewertung mit der Klassifizierungskomponente vc_dcl1. Grundlage hierfür waren die von der Deutschen Nationabibliothek (DNB) im November 2007 zur Verfügung gestellten 25.653 Titeldatensätze (12 Wochen-/Monatslieferungen) der Deutschen Nationalbibliografie der Reihen A, B und H. Nach Erläuterung der automatischen DDC-Klassifizierung und automatischen Bewertung in Kapitel 2 wird in Kapitel 3 auf den DNB-Bericht "Colibri_Auswertung_DDC_Endbericht_Sommer_2008" eingegangen. Es werden Sachverhalte geklärt und Fragen gestellt, deren Antworten die Weichen für den Verlauf der weiteren Klassifizierungstests stellen werden. Über das Kapitel 3 hinaus führende weitergehende Betrachtungen und Gedanken zur Fortführung der automatischen DDC-Klassifizierung werden in Kapitel 4 angestellt. Der Bericht dient dem vertieften Verständnis für die automatischen Verfahren.
- Date
- 23. 2.2009 16:52:13
-
Schek, M.: Automatische Klassifizierung und Visualisierung im Archiv der Süddeutschen Zeitung (2005)
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- Abstract
- Die Süddeutsche Zeitung (SZ) verfügt seit ihrer Gründung 1945 über ein Pressearchiv, das die Texte der eigenen Redakteure und zahlreicher nationaler und internationaler Publikationen dokumentiert und auf Anfrage für Recherchezwecke bereitstellt. Die Einführung der EDV begann Anfang der 90er Jahre mit der digitalen Speicherung zunächst der SZ-Daten. Die technische Weiterentwicklung ab Mitte der 90er Jahre diente zwei Zielen: (1) dem vollständigen Wechsel von der Papierablage zur digitalen Speicherung und (2) dem Wandel von einer verlagsinternen Dokumentations- und Auskunftsstelle zu einem auch auf dem Markt vertretenen Informationsdienstleister. Um die dabei entstehenden Aufwände zu verteilen und gleichzeitig Synergieeffekte zwischen inhaltlich verwandten Archiven zu erschließen, gründeten der Süddeutsche Verlag und der Bayerische Rundfunk im Jahr 1998 die Dokumentations- und Informationszentrum (DIZ) München GmbH, in der die Pressearchive der beiden Gesellschafter und das Bildarchiv des Süddeutschen Verlags zusammengeführt wurden. Die gemeinsam entwickelte Pressedatenbank ermöglichte das standortübergreifende Lektorat, die browserbasierte Recherche für Redakteure und externe Kunden im Intraund Internet und die kundenspezifischen Content Feeds für Verlage, Rundfunkanstalten und Portale. Die DIZPressedatenbank enthält zur Zeit 6,9 Millionen Artikel, die jeweils als HTML oder PDF abrufbar sind. Täglich kommen ca. 3.500 Artikel hinzu, von denen ca. 1.000 lektoriert werden. Das Lektorat erfolgt im DIZ nicht durch die Vergabe von Schlagwörtern am Dokument, sondern durch die Verlinkung der Artikel mit "virtuellen Mappen", den Dossiers. Diese stellen die elektronische Repräsentation einer Papiermappe dar und sind das zentrale Erschließungsobjekt. Im Gegensatz zu statischen Klassifikationssystemen ist die Dossierstruktur dynamisch und aufkommensabhängig, d.h. neue Dossiers werden hauptsächlich anhand der aktuellen Berichterstattung erstellt. Insgesamt enthält die DIZ-Pressedatenbank ca. 90.000 Dossiers, davon sind 68.000 Sachthemen (Topics), Personen und Institutionen. Die Dossiers sind untereinander zum "DIZ-Wissensnetz" verlinkt.
DIZ definiert das Wissensnetz als Alleinstellungsmerkmal und wendet beträchtliche personelle Ressourcen für die Aktualisierung und Oualitätssicherung der Dossiers auf. Nach der Umstellung auf den komplett digitalisierten Workflow im April 2001 identifizierte DIZ vier Ansatzpunkte, wie die Aufwände auf der Inputseite (Lektorat) zu optimieren sind und gleichzeitig auf der Outputseite (Recherche) das Wissensnetz besser zu vermarkten ist: 1. (Teil-)Automatische Klassifizierung von Pressetexten (Vorschlagwesen) 2. Visualisierung des Wissensnetzes (Topic Mapping) 3. (Voll-)Automatische Klassifizierung und Optimierung des Wissensnetzes 4. Neue Retrievalmöglichkeiten (Clustering, Konzeptsuche) Die Projekte 1 und 2 "Automatische Klassifizierung und Visualisierung" starteten zuerst und wurden beschleunigt durch zwei Entwicklungen: - Der Bayerische Rundfunk (BR), ursprünglich Mitbegründer und 50%-Gesellschafter der DIZ München GmbH, entschloss sich aus strategischen Gründen, zum Ende 2003 aus der Kooperation auszusteigen. - Die Medienkrise, hervorgerufen durch den massiven Rückgang der Anzeigenerlöse, erforderte auch im Süddeutschen Verlag massive Einsparungen und die Suche nach neuen Erlösquellen. Beides führte dazu, dass die Kapazitäten im Bereich Pressedokumentation von ursprünglich rund 20 (nur SZ, ohne BR-Anteil) auf rund 13 zum 1. Januar 2004 sanken und gleichzeitig die Aufwände für die Pflege des Wissensnetzes unter verstärkten Rechtfertigungsdruck gerieten. Für die Projekte 1 und 2 ergaben sich daraus drei quantitative und qualitative Ziele: - Produktivitätssteigerung im Lektorat - Konsistenzverbesserung im Lektorat - Bessere Vermarktung und intensivere Nutzung der Dossiers in der Recherche Alle drei genannten Ziele konnten erreicht werden, wobei insbesondere die Produktivität im Lektorat gestiegen ist. Die Projekte 1 und 2 "Automatische Klassifizierung und Visualisierung" sind seit Anfang 2004 erfolgreich abgeschlossen. Die Folgeprojekte 3 und 4 laufen seit Mitte 2004 und sollen bis Mitte 2005 abgeschlossen sein. Im folgenden wird in Abschnitt 2 die Produktauswahl und Arbeitsweise der Automatischen Klassifizierung beschrieben. Abschnitt 3 schildert den Einsatz der Wissensnetz-Visualisierung in Lektorat und Recherche. Abschnitt 4 fasst die Ergebnisse der Projekte 1 und 2 zusammen und gibt einen Ausblick auf die Ziele der Projekte 3 und 4.
- Date
- 27. 1.2006 13:23:26
-
Adams, K.C.: Word wranglers : Automatic classification tools transform enterprise documents from "bags of words" into knowledge resources (2003)
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- Abstract
- Taxonomies are an important part of any knowledge management (KM) system, and automatic classification software is emerging as a "killer app" for consumer and enterprise portals. A number of companies such as Inxight Software , Mohomine, Metacode, and others claim to interpret the semantic content of any textual document and automatically classify text on the fly. The promise that software could automatically produce a Yahoo-style directory is a siren call not many IT managers are able to resist. KM needs have grown more complex due to the increasing amount of digital information, the declining effectiveness of keyword searching, and heterogeneous document formats in corporate databases. This environment requires innovative KM tools, and automatic classification technology is an example of this new kind of software. These products can be divided into three categories according to their underlying technology - rules-based, catalog-by-example, and statistical clustering. Evolving trends in this market include framing classification as a cyborg (computer- and human-based) activity and the increasing use of extensible markup language (XML) and support vector machine (SVM) technology. In this article, we'll survey the rapidly changing automatic classification software market and examine the features and capabilities of leading classification products.
-
Sommer, M.: Automatische Generierung von DDC-Notationen für Hochschulveröffentlichungen (2012)
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- Abstract
- Das Thema dieser Bachelorarbeit ist die automatische Generierung von Notationen der Dewey-Dezimalklassifikation für Metadaten. Die Metadaten sind im Dublin-Core-Format und stammen vom Server für wissenschaftliche Schriften der Hochschule Hannover. Zu Beginn erfolgt eine allgemeine Einführung über die Methoden und Hauptanwendungsbereiche des automatischen Klassifizierens. Danach werden die Dewey-Dezimalklassifikation und der Prozess der Metadatengewinnung beschrieben. Der theoretische Teil endet mit der Beschreibung von zwei Projekten. In dem ersten Projekt wurde ebenfalls versucht Metadaten mit Notationen der Dewey-Dezimalklassifikation anzureichern. Das Ergebnis des zweiten Projekts ist eine Konkordanz zwischen der Schlagwortnormdatei und der Dewey-Dezimalklassifikation. Diese Konkordanz wurde im praktischen Teil dieser Arbeit dazu benutzt um automatisch Notationen der Dewey-Dezimalklassifikation zu vergeben.
- Content
- Vgl. unter: http://opus.bsz-bw.de/fhhv/volltexte/2012/397/pdf/Bachelorarbeit_final_Korrektur01.pdf. Bachelorarbeit, Hochschule Hannover, Fakultät III - Medien, Information und Design, Abteilung Information und Kommunikation, Studiengang Informationsmanagement
- Date
- 29. 1.2013 15:44:43
- Imprint
- Hannover : Hochschule Hannover, Fakultät III - Medien, Information und Design, Abteilung Information und Kommunikation
-
Sebastiani, F.: Classification of text, automatic (2006)
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- Abstract
- Automatic text classification (ATC) is a discipline at the crossroads of information retrieval (IR), machine learning (ML), and computational linguistics (CL), and consists in the realization of text classifiers, i.e. software systems capable of assigning texts to one or more categories, or classes, from a predefined set. Applications range from the automated indexing of scientific articles, to e-mail routing, spam filtering, authorship attribution, and automated survey coding. This article will focus on the ML approach to ATC, whereby a software system (called the learner) automatically builds a classifier for the categories of interest by generalizing from a "training" set of pre-classified texts.
-
Shafer, K.E.: Automatic Subject Assignment via the Scorpion System (2001)
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- Date
- 11. 2.1997 20:11:23
-
Walther, R.: Möglichkeiten und Grenzen automatischer Klassifikationen von Web-Dokumenten (2001)
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- Abstract
- Automatische Klassifikationen von Web- und andern Textdokumenten ermöglichen es, betriebsinterne und externe Informationen geordnet zugänglich zu machen. Die Forschung zur automatischen Klassifikation hat sich in den letzten Jahren intensiviert. Das Resultat sind verschiedenen Methoden, die heute in der Praxis einzeln oder kombiniert für die Klassifikation im Einsatz sind. In der vorliegenden Lizenziatsarbeit werden neben allgemeinen Grundsätzen einige Methoden zur automatischen Klassifikation genauer betrachtet und ihre Möglichkeiten und Grenzen erörtert. Daneben erfolgt die Präsentation der Resultate aus einer Umfrage bei Anbieterrfirmen von Softwarelösungen zur automatische Klassifikation von Text-Dokumenten. Die Ausführungen dienen der myax internet AG als Basis, ein eigenes Klassifikations-Produkt zu entwickeln
- Footnote
- Lizenziatsarbeit an der Rechts- und Wirtschaftswissenschaftlichen Fakultät der Universität Bern, Institut für Wirtschaftsinformatik (Prof. G. Knolmayer)
- Imprint
- Bern : Rechts- und Wirtschaftswissenschaftlichen Fakultät
-
Savic, D.: Automatic classification of office documents : review of available methods and techniques (1995)
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- Date
- 23. 7.1996 10:28:09
- Source
- Records management quarterly. 29(1995) no.4, S.3-18
-
Piros, A.: Automatic interpretation of complex UDC numbers : towards support for library systems (2015)
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- Abstract
- Analytico-synthetic and faceted classifications, such as Universal Decimal Classification (UDC) express content of documents with complex, pre-combined classification codes. Without classification authority control that would help manage and access structured notations, the use of UDC codes in searching and browsing is limited. Existing UDC parsing solutions are usually created for a particular database system or a specific task and are not widely applicable. The approach described in this paper provides a solution by which the analysis and interpretation of UDC notations would be stored into an intermediate format (in this case, in XML) by automatic means without any data or information loss. Due to its richness, the output file can be converted into different formats, such as standard mark-up and data exchange formats or simple lists of the recommended entry points of a UDC number. The program can also be used to create authority records containing complex UDC numbers which can be comprehensively analysed in order to be retrieved effectively. The Java program, as well as the corresponding schema definition it employs, is under continuous development. The current version of the interpreter software is now available online for testing purposes at the following web site: http://interpreter-eto.rhcloud.com. The future plan is to implement conversion methods for standard formats and to create standard online interfaces in order to make it possible to use the features of software as a service. This would result in the algorithm being able to be employed both in existing and future library systems to analyse UDC numbers without any significant programming effort.
- Source
- Classification and authority control: expanding resource discovery: proceedings of the International UDC Seminar 2015, 29-30 October 2015, Lisbon, Portugal. Eds.: Slavic, A. u. M.I. Cordeiro
-
Subramanian, S.; Shafer, K.E.: Clustering (1998)
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- Date
- 11. 2.1997 20:11:23
