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Abstract

Starting from an unsolved problem of information retrieval this paper presents an ontology-based model for indexing and retrieval. The model combines the methods and experiences of cognitive-to-interpret indexing languages with the strengths and possibilities of formal knowledge representation. The core component of the model uses inferences along the paths of typed relations between the entities of a knowledge representation for enabling the determination of hit quantities in the context of retrieval processes. The entities are arranged in aspect-oriented facets to ensure a consistent hierarchical structure. The possible consequences for indexing and retrieval are discussed.

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Abstract

Es wird ein Überblick gegeben, wie sich die Veränderungen sich im Bereich der Informationsverarbeitung und -technik auf die Gestaltung von Studienkonzepten im Bereich Wissensorganisation und Information Retrieval in deutschen bibliothekarischen Ausbildungseinrichtungen ausgewirkt haben. Dabei wird unterschieden in Bereiche der Veränderungen und in Bereiche der Stabilität. Die Bereiche der Veränderungen lassen sich den Verfahren und Anwendungen in der Praxis zuordnen. Sie sind zum einen geprägt durch eine integrative Sicht auf Indexierung und Information Retrieval und lassen sich zum anderen durch folgende Trends charakterisieren: - Von Katalogen zu OPACs und WebOPACs - Von der Katalogisierung zum intelligenten Information Retrieval und Suchmaschinen mit benutzerfreundlichen Interaktionsschnittstellen - Vom lokalen Katalog zum kooperativen Erschließen und Retrieval in heterogenen Netzen - Von intellektueller zu automatischer Indexierung - Von Regelwerken zu strukturierten Beschreibungsebenen (z.B. Metadaten) - Von Beschreibung und Bewertung zu Entwicklungen und Produktdesign Die Bereiche der Stabilität lassen sich der Theorie und den Methoden zuordnen und sind durch folgende Themen beschreibbar: - Grundlagen der Wissensorganisation und Informationserschließung (z.B. in Philosophie, Linguistik, Informatik, Kognitionspsychologie) - Grundlagen der Gestaltung von Dokumentationssprachen - Grundlagen des Information Retrieval

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Abstract

A survey is given, how modifications in the field of the information processing and technology have influenced the concepts for teaching and studying the subjects of knowledge organization and information retrieval in German universities for library and information science. The discussion will distinguish between fields of modifications and fields of stability. The fields of the modifications are characterised by procedures and applications in libraries. The fields of stability are characterised by theory and methods

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Abstract

Faceted arrangement of entities and typed relations for representing different associations between the entities are established tools in knowledge representation. In this paper, a proposal is being discussed combining both tools to draw inferences along relational paths. This approach may yield new benefit for information retrieval processes, especially when modeled for heterogeneous environments in the Semantic Web. Faceted arrangement can be used as a selection tool for the semantic knowledge modeled within the knowledge representation. Typed relations between the entities of different facets can be used as restrictions for selecting them across the facets.

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Abstract

We present an approach for detecting multiword phrases in mathematical text corpora. The method used is based on characteristic features of mathematical terminology. It makes use of a software tool named Lingo which allows to identify words by means of previously defined dictionaries for specific word classes as adjectives, personal names or nouns. The detection of multiword groups is done algorithmically. Possible advantages of the method for indexing and information retrieval and conclusions for applying dictionary-based methods of automatic indexing instead of stemming procedures are discussed.