Sökning: "Count data"

Visar resultat 1 - 5 av 166 avhandlingar innehållade orden Count data.

  1. 1. Count data modelling and tourism demand

    Författare :Jörgen Hellström; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Time series; Count data; INARMA; Unit root; Aggregation; Forecasting; Tourism; Truncation; Inflation; Simulated maximum likelihood; Bivariate hurdle model.;

    Sammanfattning : This thesis consists of four papers concerning modelling of count data and tourism demand. For three of the papers the focus is on the integer-valued autoregressive moving average model class (INARMA), and especially on the ENAR(l) model. LÄS MER

  3. 2. Räkna med den ekonomiska brottsligheten : Om det kvantitativa studiet av ekonomisk brottslighet

    Författare :Martin Bergqvist; Hanns von Hofer; Paul Larsson; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; economic crime; white collar crime; consumer victimization; consumer detriment; consumer fraud; methodology; statistics; count; measure; Criminology; Kriminologi; kriminologi; Criminology;

    Sammanfattning : Since the 1970´s economic crime has been a debated issue in Sweden. Lack of reliable statistical information has been put forth as a serious problem in this debate. The aim of this thesis is to examine the possibilities of improving quantitative knowledge regarding the prevalence and structure of economic crime in Sweden. LÄS MER

  4. 3. Differences and similarities in work absence behavior : - empirical evidence from micro data

    Författare :Maria Nilsson; Mårten Palme; Jan Erik Askildsen; Växjö universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; moral hazard; gender difference; immigrants; panel data; count data models; fixed effects; finite mixture models; Economics; Nationalekonomi; Economics; Nationalekonomi;

    Sammanfattning : This thesis consists of three self-contained essays about absenteeism. Essay I analyzes if the design of the insurance system affects work absence, i.e. the classic insurance problem of moral hazard. LÄS MER

  5. 4. Pharmacometric Methods and Novel Models for Discrete Data

    Författare :Elodie L Plan; Mats O Karlsson; Laura Sargentini-Maier; Armel Stockis; Christian Laveille; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacometrics; pharmacodynamics; disease progression; modelling; discrete data; count; ordered categorical; repeated time-to-event; RTTCE; RCEpT; NONMEM; FOCE; LAPLACE; SAEM; AGQ; pain scores; epilepsy seizures; gastroesophageal symptoms; statistical power; simulations; diagnostics; PHARMACY; FARMACI; Pharmacokinetics and Drug Therapy; Farmakokinetik och läkemedelsterapi;

    Sammanfattning : Pharmacodynamic processes and disease progression are increasingly characterized with pharmacometric models. However, modelling options for discrete-type responses remain limited, although these response variables are commonly encountered clinical endpoints. Types of data defined as discrete data are generally ordinal, e.g. LÄS MER

  7. 5. Statistical analysis of metagenomic data

    Författare :Viktor Jonsson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Metagenomics; Statistical methods; Hierarchical Bayesian models; Statistical power; False discovery rate; Environmental genomics; Generalized linear models; Count data; Environmental genomics;

    Sammanfattning : Metagenomics is the study of microbial communities on the genome level by direct sequencing of environmental and clinical samples. Recently developed DNA sequencing technologies have made metagenomics widely applicable and the field is growing rapidly. LÄS MER