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In the thesis, we developed a novel unsupervised algorithm for terminology extraction (TE).
TE consists in detecting and ranking possible terms from a given document. While a term is a sequence of words that refers to a particular concept in a given domain.
This thesis also brings with it two other ancillary contributions. A new relevancy measure for term ranking; which uses a mix of a termhood, a unithood, and a noise measure to provide a reliable score. And an abbreviation extractor which discovers and extracts the extended form of abbreviated terms using a simple heuristic.
Many algorithms already exist for extracting terms but they have limitations. Primarily, we found that no current method was capable of reliably extracting long and complex terminology. Therefore, the algorithm we proposed was designed to handle such task.

term extraction --- terminology extraction --- financial text --- information extraction --- abbreviation extraction --- long term --- complex terminology --- multi word term --- termhood --- unithood --- unsupervised --- Ingénierie, informatique & technologie > Sciences informatiques

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Information retrieval --- Library automation --- Information Systems --- Translating --- Information storage and retrieval systems --- Documentation --- Systèmes d'information --- Periodicals --- Périodiques --- Informationsspeicherung --- Zeitschrift --- Information Retrieval --- Information Technology --- Library and Information Sciences --- General and Others --- Information Extraction, Retrieval and Filtering --- Information Science and Systems --- Periodikum --- Zeitschriften --- Informationsretrieval --- Information --- Informationsrecherche --- Informationswiedergewinnung --- Retrieval --- Informationsrückgewinnung --- Informationsgewinnung --- Wiedergewinnung --- Speicherung --- Literaturrecherche --- Online-Recherche --- Recherche --- Information Extraction --- Presse --- Fortlaufendes Sammelwerk --- Informationsrückgewinnung

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Information systems --- Data base management --- Periodicals --- Database management --- Bases de données --- 54.64 databases --- Gestion --- #ETEW:TSCAT --- #BA01105 --- #TS:WBIB --- #TS:WMAG --- 681.3 --- Computer science --- Information Technology --- Data Storage and Data Mining --- Database Design & Management --- General and Others --- Information Extraction, Retrieval and Filtering --- Information Science and Systems --- Mathematical Sciences --- Applied Mathematics --- Information Technology. --- Information Science and Systems. --- 681.3* / / / / / / / / / / / / / / / / / / / / / / / / / / / / --- Database management - Periodicals

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Documentation and information --- Information science --- Library science --- Sciences de l'information --- Bibliothéconomie --- Periodicals --- Périodiques --- #TS:TCPW --- Information Technology --- Data Storage and Data Mining --- Database Design & Management --- Information Extraction, Retrieval and Filtering --- Information Science and Systems --- Software Engineering --- Library and Information Sciences --- General and Others --- Information Technology. --- Software Engineering. --- Library science. --- Information science. --- Communication --- Information literacy --- Librarianship --- Library economy --- Bibliography --- Documentation

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Communication in education --- Communication --- Communication. --- Communication in education. --- Communication, Primitive --- Mass communication --- Education --- Sociology --- Educational Technology. --- Arts and Humanities --- Information Technology --- Telecommunications Technology --- Education & Careers --- Society and Culture --- Information Extraction, Retrieval and Filtering --- Information Science and Systems --- Communication Networks & Technology --- Educational sciences