Search for dissertations about: "SAMHÄLLSVETENSKAP Statistik"

Showing result 1 - 5 of 569 swedish dissertations containing the words SAMHÄLLSVETENSKAP Statistik.

  1. 1. Attrition in Studies of Cognitive Aging

    University dissertation from Umeå : Umeå universitet

    Author : Maria Josefsson; Umeå universitet.; [2013]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Attrition; missing data; age-related cognitive change; non- ignorable dropout; monotone missing pattern; mixture models; pattern- mixture models; imputation; Statistics; statistik;

    Abstract : Longitudinal studies of cognition are preferred to cross-sectional stud- ies, since they offer a direct assessment of age-related cognitive change (within-person change). Statistical methods for analyzing age-related change are widely available. READ MORE

  2. 2. Feasible computation of generalized linear mixed models with application to credit risk modelling

    University dissertation from Örebro : Örebro universitet

    Author : Md. Moudud Alam; Örebro universitet.; [2010]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Credit risk; cluster correlation; GLMM; large data; two-step pseudo likelihood estimation; defaults contagion; predictive likelihood; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES Statistics; computer and systems science Statistics; SAMHÄLLSVETENSKAP Statistik; data- och systemvetenskap Statistik; Statistics; Statistik;

    Abstract : This thesis deals with developing and testing feasible computational procedures to facilitate the estimation of and carry out the prediction with the generalized linear mixed model (GLMM) with a scope of applying them to large data sets. The work of this thesis is motivated from an issue arising incredit risk modelling. READ MORE

  3. 3. Some properties of measures of disagreement and disorder in paired ordinal data

    University dissertation from Örebro : Örebro university

    Author : Hans Högberg; Örebro universitet.; [2010]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; agreement; augmented ranks; categorical data; disorder; jackknife; paired ordinal data; rating scales; sample size; sampling distribution; simulation; U-statistics; variance; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES Statistics; computer and systems science Statistics; SAMHÄLLSVETENSKAP Statistik; data- och systemvetenskap Statistik; Statistics; Statistik;

    Abstract : The measures studied in this thesis were a measure of disorder, D, and a measure of the individual part of the disagreement, the measure of relative rank variance, RV, proposed by Svensson in 1993. The measure of disorder is a useful measure of order consistency in paired assessments of scales with a different number of possible values. READ MORE

  4. 4. On estimation in econometric systems in the presence of time-varying parameters

    University dissertation from Umeå : Umeå universitet

    Author : Kurt Brännäs; Umeå universitet.; [1980]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Econometric systems; time-varying parameters; Kalman filtering; stochastic regressors; unknown transition matrix; robustness; simulation;

    Abstract : Economic systems are often subject to structural variability. For the achievement of correct structural specification in econometric modelling it is then important to allow for parameters that are time-varying, and to apply estimation techniques suitably designed for inference in such models. READ MORE

  5. 5. Exploring patterns of empirical networks

    University dissertation from Umeå : Umeå University, Department of Physics

    Author : Luis E C Rocha; Umeå universitet.; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; complex systems; complex networks; network analysis; empirical networks; air transportation; consumer complaints; information technology; sexual contacts; epidemics; vaccination; NATURAL SCIENCES Physics Other physics Statistical physics; NATURVETENSKAP Fysik Övrig fysik Statistisk fysik; NATURAL SCIENCES Physics Other physics Computational physics; NATURVETENSKAP Fysik Övrig fysik Beräkningsfysik; INTERDISCIPLINARY RESEARCH AREAS Technology and social change; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN Teknik och social förändring; MEDICINE Social medicine Public health medicine research areas Epidemiology; MEDICIN Socialmedicin Folkhälsomedicinska forskningsområden Epidemiologi; TECHNOLOGY Information technology; TEKNIKVETENSKAP Informationsteknik; fysik; Physics; Statistics; statistik; Epidemiology; epidemiologi; Economics; nationalekonomi;

    Abstract : We are constantly struggling to understand how nature works, trying to identify recurrent events and looking for analogies and relations between objects or individuals. Knowing patterns of behavior is powerful and fundamental for survival of any species. READ MORE