148 uppsatser · sida 4 av 10
… when used for query expansion. There is a well-known problem with synonymy in information retrieval and one solution to this problem is to use a thesaurus. In this thesis thesauri are created automatically to find statistically related words and not only synonyms. LSI is a …
This Master’s thesis is a comparative study of information retrieval results between three distinct search strategies in simulated automatic query expansion in a bibliographic database. Our purpose is to investigate which of the search strategies score the most effective …
… were used to conduct the searches with the search engines. Genuine medical information needs were selected from a question collection provided by the television program Fråga doktorn. The relevance of the first 10 retrieved documents was judged by using a binary scale and the …
… Query expansion is the process of adding new terms to a query to improve the retrieval effectiveness. In this study the baseline query was expanded in five different modes. The first expansion strategy was formulated by the inflected terms as the system does not allow …
Att tillgängliggöra bildsamlingar för en bred och ickespecificerad användargrupp.
This essay is a survey of thirteen user studies performed in the field of image retrieval. The purpose is to try to distinguish principles that should be kept in mind when wanting to make image databases available for a wide and varied group of users. The essay tries to answer …
en jämförelse i återvinningseffektivitet mellan enkel och avancerad sökning
The purpose with this essay is to evaluate the retrieval performance between Googles basic search and the advanced search functions. A secondary purpose is to evaluate the differences between the binary relevance scale and a 4- point scale. The basic search is defined as a …
… the effects of proximity operators and query expansion with synonyms on retrieval performance. The queries were expanded with synonyms and structured with proximity operators where the permitted distance between terms varied from 1 to 3. The expansion terms were selected from …
En studie av två globala och en lokal sökmotor.
This thesis is focusing on how global and local search engines retrieve information from the local domain. The three search engines tested are the global search engines Yahoo, Ask.com and the local search engine Web Wombat. The questions we examined were: which search engine has …
Title Systems, Stability and Power. The Discourse of Information in Organizing Knowledge. Abstract The aim of this Master's thesis is to inquire into the consequences of an unequal distribution of power between information discourses in the field of knowledge organisation. A …
This thesis aims to discuss how an information system and its users may adapt to each other. The main discussion is how to create an information system that is adaptable without losing its organising properties. The thesis uses a holistic approach to the topic and the areas …
… possible problems, document and then take measures. The study was performed as information retrieval of literature where the cause was to highlight sexuality for patients that have experienced a myocardial infarction. Their needs of information and what measures that exists to …
Förhållandet mellan biblioteks- & informationsvetenskapen och materialbibliografin
… physical bibliography in research or otherwise discusses its relevance to information studies. Quite a number of scholars are stressing the usefulness of this bibliographical tradition, even though its position in LIS agenda as a whole seems to be less established. These …
företagsbibliotekens tjänster i informationsåldern
… in mind the changes that have taken place concerning the availability of information. I also wanted to explore whether the librarians had the necessary competence to perform the services offered. Six information specialists were interviewed to give their view on the services …
Vad ungdomar tycker om sina egna kompetenser och erfarenheter
The study aims to investigate student’s attitudes and experiences of information retrieval on the Internet, as tools for learning. I have been interested of their own views about their own knowledge and experience in the subject, information seeking on the Internet. The focus is …
en studie av sjuksköterskestudenters informationssökning.
… of this thesis is to contribute to increased knowledge concerning students? information seeking in an electronic environment. Using a qualitative approach; focus groups interviews, a total of nine nursing students were interviewed in two groups. The interviews were transcribed …
