Search for dissertations about: "Information Retrieval"

Showing result 1 - 5 of 163 swedish dissertations containing the words Information Retrieval.

2. 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; Haibo Li; [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

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

   University dissertation from Stockholm : KTH Royal Institute of Technology

   Author : Xing Lin; Yifang Ban; Harrie Lars; [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

5. 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; Lars Asker; Jussi Karlgren; Douglas Oard; [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

6. 4. Subject retrieval in web-based library catalogs

   University dissertation from University of Zagreb

   Author : Koraljka Golub; Jadranka Lasić-Lazić; [2003]
   Keywords : 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;

   Abstract : 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. READ MORE

7. 5. Stylistic Experiments for Information Retrieval

   University dissertation from Stockholm University

   Author : Jussi Karlgren; [2000]
   Keywords : NATURVETENSKAP; NATURAL SCIENCES;

   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 content word occurrence. But texts have several interesting characteristics beyond topic. READ MORE