Sökning: "full text retrieval"

Hittade 3 avhandlingar innehållade orden full text retrieval.

  1. 1. Subject retrieval in web-based library catalogs

    Författare :Koraljka Golub; Jadranka Lasić-Lazić; Department of Information Science Filozofski fakultet u Zagrebu; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; British university libraries; Croatian university libraries; Indexing and retrieval systems; Online library catalogs; Subject access points; Subject retrieval; User interface; User search behavior; WebPACs; Library and Information Science; Biblioteks- och informationsvetenskap;

    Sammanfattning : This thesis has been motivated by past research, problems and realizations that online library catalog users frequently perform subject searches – using keywords, subject headings and descriptors – and these searches have yielded unsatisfactory results. Web-based catalogs or WebPACs (Web-based Online Public Access Catalogs), belonging to the so-called third generation of online catalogs and providing a wide variety of search options, remain largely underutilized despite the continuous advancement of information retrieval systems. LÄS MER

  3. 2. The effects of indexing strategy-query term combination on retrieval effectiveness in a Swedish full text database

    Författare :Per Ahlgren; Göteborgs universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; base word form index; full text retrieval; indexing strategies; inflected word form index; morphological analysis; normalization; Swedish; SWETWOL; truncation; user scenarios; informationsåtervinning;

    Sammanfattning : This thesis deals with Swedish full text retrieval and the problem of morphological variation of query terms in the document database. The study is an information retrieval experiment with a test collection. While no Swedish test collection was available, such a collection was constructed. LÄS MER

  4. 3. Unsupervised Learning of Morphology: Survey, Model, Algorithm and Experiments

    Författare :Harald Hammarström; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis contains work on a specific problem in field of Language Technology. The problem can be described as follows: "Can a computer extract a description of word conjugation in a natural language using only written text in the language?" The problem is often referred to as Unsupervised Learning of Morphology (ULM) and has a wide variety of Language Technology applications, including Machine Translation, Document Categorization and I nformation Retrieval. LÄS MER