Sök:

Sökresultat:

8901 Uppsatser om Cluster analysis - Sida 2 av 594

Automatisk query expansion: en komparativ studie av olika strategier för termklustring baserade på lokal analys

Automatic query expansion has long been studied in information retrieval research as a technique that deals with the fundamental issue of word mismatch between query and document. The purpose of this thesis is to compare the retrieval effectiveness of different strategies for automatic query expansion. The strategies are based on local analysis of the corpus and use statistical information from the local document set to extract terms that suppose to adapt themselves to each individual search and therefore appear to be searchonyms to the index terms. The strategies compared are: association clusters, metric cluster and scalar cluster. Baseline queries of 24 topics are expanded using terms from the different clusters and searches are made.

Bibliotekariers och lastbilschaufförers syn på "Lyssna dig rik"-kampanjen : En utvärdering av klustergruppskampanjen "Lyssna dig rik" på ett huvudbibliotek

This thesis is a study of Futurum.kom´s campaign "Lyssna dig rik". Futurum.kom is a regional marketing project between Länsbibliotek Sydost, Regionbibliotek Kalmar and 25 public libraries in the county of Blekinge, Kalmar and Kronoberg. The aim of the Futurum.kom project is to strengthen the role of the public library in society. "Lyssna dig rik" was a cluster group campaign with the aim of making people know about the possibilities of loaning audiobooks in libraries. The target group was lorry drivers in the age of 30-65 with the possibilities to listen to audiobooks at work.

Biblioteks- och informationsvetenskap som kunskapsområde En bibliometrisk studie.

The objective of the study is to map the cognitive structure of Library and Information Science, using a quantitative, bibliometric method. This empirical study shows how co-citation analysis combined with word-frequency analysis can be used to describe the subject content of the field. The research questions to be answered are: -Which clusters of authors can be identified? -How can these clusters be described in respect of their subject content, if the descriptors associated with the authors in the clusters are counted? The results show that the cognitive structure of Library and Information Science can be described by 13 clusters of authors, where each cluster is representing a specific aspect of the subject- domain. For the description of the subject content of the clusters, descriptors DE of the LISA database have been used..

En dag på sommarovet : Analys av en novell

This thesis is an evaluation of the campaign [The digitally curious] that is part of the regional marketing campaign Futurum.kom. Its purpose was to strengthen the library's role in society. The campaign includes Regionbibliotek Kalmar, Länsbibliotek Sydost and also 25 public libraries in Kronoberg, Kalmar and Blekinge. The campaign [The digitally curious] is one of several cluster campaigns targeting their marketing to a specific audience and aims to promote awareness of what libraries have to offer and provide information on digital media and services. The target group for the campaign is a man between 45-65 years old, who is interested in digital technology.

Tidsberoende kvantkemiska beräkningar av optisk absorption hos polymerer och molekyler med litet bandgap

The vertical electronic excitation energies for the narrow-bandgap polymers LBPF, EP37 and EP62 have been calculated using Density Functional Theory (DFT). Also the vertical excitation energies for the acceptor unit of LBPF have been calculated using the Hartree-Fock (HF), DFT and Coupled Cluster (CC) methods. The calculations cover the visible and infrared wave length region and two strong transitions are obtained, one corresponding to the pi to pi* transition and one corresponding to the pi to Acceptor transition. The excitation energies obtained from DFT are below the corresponding experimental results and attempts have therefore been made to perform bench-marking calculations using a hierarchy of CC methods..

"Det är tråkigt att göra saker själv" : En kvalitativ studie om vad förskolebarn har för uppfattning om samarbete.

Weekly lifestyle magazines constitute an important role for many young people these days. Their purpose is to inform and entertain a broad public within subjects such as fashion, friends, relationships, men and beauty. Frida and Veckorevyn are two big magazines that have a big influence on young women. One subject that frequently occurs is articles about men, written by women. This study focus on how (with which qualities and weaknesses) these women choose to subscribe men.

Gubben i lådan. Flört eller freak? : En kvalitativ studie av Frida och Veckorevyns framställning av manliga egenskaper.

Weekly lifestyle magazines constitute an important role for many young people these days. Their purpose is to inform and entertain a broad public within subjects such as fashion, friends, relationships, men and beauty. Frida and Veckorevyn are two big magazines that have a big influence on young women. One subject that frequently occurs is articles about men, written by women. This study focus on how (with which qualities and weaknesses) these women choose to subscribe men.

Synen på bibliotek förändras inte på en dag : En utvärdering av klusterkampanjen "Den digitalt nyfikne" på ett folkbibliotek

This thesis is an evaluation of the campaign [The digitally curious] that is part of the regional marketing campaign Futurum.kom. Its purpose was to strengthen the library's role in society. The campaign includes Regionbibliotek Kalmar, Länsbibliotek Sydost and also 25 public libraries in Kronoberg, Kalmar and Blekinge. The campaign [The digitally curious] is one of several cluster campaigns targeting their marketing to a specific audience and aims to promote awareness of what libraries have to offer and provide information on digital media and services. The target group for the campaign is a man between 45-65 years old, who is interested in digital technology.

Bättre en bok i handen än tio på nätet? En studie av författares och förlags attityder till elektronisk publicering av skönlitteratur

This master thesis investigates attitudes toward electronic publishing of fiction among the key participants authors and publishers in Sweden with the overall purpose of analysing the nature of these attitudes and what sort of tensions that exist between the two groups. The major areas of concern were formulated as: what sort of attitudes do authors and publishers display toward electronic publishing of fiction?, how do these attitudes affect the way the two groups relate to electronic publishing and to each other? and how do they perceive the future of this practice?. Everett Rogers diffusion of innovations theory was applied to characterise electronic publishing as an innovation cluster, and to investigate innovation attributes in form of relative advantages and disadvantages, compatibility, complexity, trialability and observability. Data was gathered using quantitative questionnaires, but respondents were also given the opportunity to elaborate freely on some of the questions.

Forskningsfronten och forskningsbasen inom informationsvetenskap ? en bibliometrisk undersökning

The purpose with this study is to map the research front and the research base in information science, by using the bibliometric methods bibliographic coupling and author-co citation analysis. The research questions are: 1. What is the nature of the research front in information science, regarding which areas that are being studied? 2. What is the nature of the research base in information science, regarding which authors who are most cited, and how they can be grouped? The data used in the study were gathered from articles published in the journal Journal of the American society for information science and technology, published between 2004-2006, respectively 1986-2006.

Telecom City : Co-Opetition and Communication within a regional growth cluster

Vår uppsats undersöker, om hur möjligheterna för utbyte av information samt samarbete mellan Telecom Citymedlemmarna kan förbättras, med ändamålet att stärka deras konkurrenskraft gentemot externa konkurrenter..

Forskningsområdet biblioteks- och informationsvetenskap vid Högskolan i Borås ? En bibliometrisk studie av den intellektuella basen 2001?2006

The aim of this study was to map the intellectual base at the Swedish School of Library and Information Science (SSLIS) at the University Collage of Borås, and to compare this intellectual base to the intellectual base of the research area Library and Information Science. This was done by analysing the citations in publications published, between the year of 2001 to the first quarter of 2006, by researchers at the institution, using the technique of author cocitation analysis. Cluster analysis and multidimensional scaling, statistical techniques that are traditional i the author cocitation analysis, formed an objective map of the intellectual base at the SSLIS. This map was then compared with three prior studies, that used the same technique to map the intellectual base of the research area. The result shows that the map of the intellectual base at the SSLIS consists of the specialities: user studies, library studies, culture/cultural policy, information retrieval, bibliometrics and information in organisations.

Population genetic analysis and breed assignment of three Swedish horse breeds

The genetic relationship between three Swedish horse breeds was investigated using microsatellite data from 144 loci in 30 horses. The North Swedish Trotter is believed to have been crossed with the Standardbred in the 1950?s to produce a faster trotter. If true, the North Swedish Trotter should be more alike the Standardbred than what the North Swedish Draught Horse is, from which they originate. This was investigated using F-statistics and Nei?s distance in GENEPOP and GENETIX and cluster assignment in STRUCTURE.

Känslan i bilden : Sociala taggars användbarhet vid bildsökning i Flickr

Image indexing research today is either conducted on a visual attribute level or on a higher semantic level, forming a semantic gap between the two. There is much to gain if research progress from the two fields is combined. Image retrieval using access points in both visual and semantic significations could improve retrieval and bridge the gap. In social media today, images are often the primary communication agent and the number of images on the web is increasing in an uncontrolled way. New and efficient ways to index and retrieve the images are needed.The purpose of this study is to examine if emotions could be a semantic access point for image retrieval and if folksonomy indexing is useful when searching for images that represent emotions.

En tvärsnittsstudie rörande den samtida förekomsten av privat- och publik självmedvetenhet, social ångest samt smärta hos grupper i en studentpopulation.

There is much research into the reasons why a temporary pain, in some individuals, becomes chronic. Many of the causal factors linked with pain also seems to coexist with social anxiety, public self-consciousness and, to some extent, private self-consciousness. The purpose of this study was to investigate and identify possible patterns of self-consciousness (private and public), social anxiety and pain. This was done by a cross-sectional study in which a questionnaire was distributed to students at Örebro University. A total of 302 completed questionnaires were received.

<- Föregående sida 2 Nästa sida ->