Search for dissertations about: "information retrieval"

Showing result 1 - 5 of 148 swedish dissertations containing the words information retrieval.

  1. 1. Textual information retrieval An approach based on language modeling and neural networks

    University dissertation from Umeå : Tillämpad fysik och elektronik

    Author : Apostolos A. Georgakis; Umeå universitet.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Informatics; computer and systems science; Language modeling; Informatik; data- och systemvetenskap; SOCIAL SCIENCES Statistics; computer and systems science Informatics; computer and systems science; SAMHÄLLSVETENSKAP Statistik; data- och systemvetenskap Informatik; data- och systemvetenskap;

    Abstract : This thesis covers topics relevant to information organization and retrieval. The main objective of the work is to provide algorithms that can elevate the recall-precision performance of retrieval tasks in a wide range of applications ranging from document organization and retrieval to web-document pre-fetching and finally clustering of documents based on novel encoding techniques. READ MORE

  2. 2. Modern GIR Systems Framework, Retrieval Model and Indexing Techniques

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Xing Lin; KTH.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Information Retrieval; GIR; Framework; Indexing; Retrieval Model; TECHNOLOGY Information technology Other information technology; TEKNIKVETENSKAP Informationsteknik Övrig informationsteknik;

    Abstract : Geographic information is one of the most important and the most common types of information in human society. It is estimated that more than 70% of all information in the world has some kind of geographic features. READ MORE

  3. 3. Resource Lenient Approaches to Cross Language Information Retrieval : Using Amharic

    University dissertation from Stockholm : Department of Computer and Systems Sciences, Stockholm University

    Author : Atelach Alemu Argaw; Stockholms universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cross language information retrieval; Amharic; stemming; MRD based query translation; transliteration; named entity detection; translation term selection; sense discrimination; POS tagging; SOCIAL SCIENCES Statistics; computer and systems science Informatics; computer and systems science Computer and systems science; SAMHÄLLSVETENSKAP Statistik; data- och systemvetenskap Informatik; data- och systemvetenskap Data- och systemvetenskap; Computer and Systems Sciences; data- och systemvetenskap;

    Abstract : Information Retrieval (IR) deals with finding and presenting information from a collection of documents/data that are relevant to an information need (a query) expressed by a user. Cross Language Information Retrieval (CLIR) is a subfield of IR where queries are posed in a different language than that of the document collection. READ MORE

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

    University dissertation from Göteborg : Göteborg University

    Author : Per Ahlgren; Högskolan i Borås.; Göteborgs universitet.; Gothenburg University.; [2004]
    Keywords : 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; metodik; fulltextdatabaser; information retrieval; methodology; fulltext databases;

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

  5. 5. Stylistic experiments for information retrieval

    University dissertation from Stockholm : Department of Linguistics, Stockholm University

    Author : Jussi Karlgren; Stockholms universitet.; SICS.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; HUMANIORA; HUMANITIES; NATURVETENSKAP; NATURAL SCIENCES; HUMANITIES and RELIGION Languages and linguistics Linguistic subjects Computational linguistics; HUMANIORA och RELIGIONSVETENSKAP Språkvetenskap Lingvistikämnen Datorlingvistik; Computational Linguistics; datorlingvistik;

    Abstract : Information retrieval systems are built to handle texts as topical items:texts are tabulated by occurrence frequencies of content words in them,under the assumption that text topic is reasonably well modeled by contentword occurrence. But texts have several interesting characteristics beyondtopic. READ MORE