Search for dissertations about: "Model misspecification"

Showing result 16 - 20 of 32 swedish dissertations containing the words Model misspecification.

  2. 16. Essays on international comparisons of health care expenditure

    Author : Ulf Gerdtham; Linköpings universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; International comparisons; Health care expenditure; Econometric analysis; cross-national; Determinants of health care expenditure; INTERDISCIPLINARY RESEARCH AREAS; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN;

    Abstract : The five papers of this thesis continue the tradition of international comparisons of aggregate health care expenditure. The studies focus on econometric aspects, such as temporal stability of the estimated relationships, their functional form, and discrimination between different regression models. READ MORE

  4. 17. Generalized linear models with clustered data

    Author : Henrik Holmberg; Erling Häggström Lundevaller; Göran Broström; Douglas Bates; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Statistics; statistik;

    Abstract : In situations where a large data set is partitioned into many relatively small groups, and where the members within a group have some common unmeasured characteristics, the number of parameters requiring estimation tends to increase with sample size if a fixed effects model is applied. This fact causes the assumptions underlying asymptotic results to be violated. READ MORE

  5. 18. Unequal Probability Sampling in Active Learning and Traffic Safety

    Author : Henrik Imberg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; naturalistic driving; active learning; sampling weighing; optimal design; sequential sampling; probability sampling;

    Abstract : This thesis addresses a problem arising in large and expensive experiments where incomplete data come in abundance but statistical analyses require collection of additional information, which is costly. Out of practical and economical considerations, it is necessary to restrict the analysis to a subset of the original database, which inevitably will cause a loss of valuable information; thus, choosing this subset in a manner that captures as much of the available information as possible is essential. READ MORE

  6. 19. Bayesian time series and panel models : unit roots, dynamics and random effects

    Author : Mickael Salabasis; Handelshögskolan i Stockholm; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : This thesis consists of four papers and the main theme present is dependence, through time as in serial correlation, and across individuals, as in random effects. The individual papers may be grouped in many different ways. READ MORE

  7. 20. Optimal Sequential Decisions in Hidden-State Models

    Author : Juozas Vaicenavicius; Erik Ekström; Huyên Pham; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; sequential analysis; optimal stopping; optimal liquidation; drift uncertainty; incomplete information; stochastic filtering;

    Abstract : This doctoral thesis consists of five research articles on the general topic of optimal decision making under uncertainty in a Bayesian framework. The papers are preceded by three introductory chapters.Papers I and II are dedicated to the problem of finding an optimal stopping strategy to liquidate an asset with unknown drift. READ MORE