Document (#32152)

Author

Stock, W.G.

Title

Themenentdeckung und -verfolgung und ihr Einsatz bei Informationsdiensten für Nachrichten

Source

Information - Wissenschaft und Praxis. 58(2007) H.1, S.41-46

Year

2007

Abstract

Themenentdeckung und -verfolgung (topic detection and tracking; TDT) fasst unterschiedliche Dokumente zu einem Thema zusammen und bietet dem Nutzer zunächst das Thema und erst in einem zweiten Schritt die einzelnen Dokumente zur Anzeige an. TDT ist nützlich bei Nachrichten sowie bei Blog-Einträgen. Ein bekanntes Beispiel ist Google News. Der Artikel bespricht den Forschungsstand zu TDT und diskutiert den Einsatz von TDT bei News-Informationsdiensten wie z.B. Factiva oder LexisNexis. Dort ist TDT zweifach wichtig: Erstens ist es (analog zu Google News) bei Profildiensten einsetzbar, zweitens ist es möglich, Dokumente zum gleichen Thema in einen Ordner zu klassieren, um bei einer retrospektiven Recherche die Treffermenge geordnet nach unterschiedlichen Themen anzubieten (und dies ohne Nutzung einer Dokumentationssprache).

Theme

Informationsdienstleistungen

Object

Google news
Factiva

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