Sökning: "bootstrapping"

Visar resultat 21 - 25 av 48 avhandlingar innehållade ordet bootstrapping.

  1. 21. Monte Carlo Results for Bootstrap Tests in Systems with Integrated-Cointegrated Variables

    Författare :Panagiotis Mantalos; Statistiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; actuarial mathematics; programming; operations research; Statistics; Granger-causality; Monte Carlo; Cointegration; Bootstrap; Statistik; operationsanalys; programmering; aktuariematematik;

    Sammanfattning : When we study the properties of a test procedure, two aspects are of prime importance. Firstly, we wish to know if the actual size of the test (i.e., the probability of rejecting the null when true) is close to the nominal size (used for calculating the critical values). LÄS MER

  3. 22. Rationality in inquiry : on the revisability of cognitive standards

    Författare :Jonas Nilsson; Umeå universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; rationality; fallibilism; revisability; ultimate justification; relativism; bootstrap rationality; cognitive goals; Laudan; Briskman; Worrall; Hauptli; Apel; Theoretical philosophy; Teoretisk filosofi;

    Sammanfattning : The topic of this study is to what extent standards of rational inquiry can be rationally criticized and revised. It is argued that it is rational to treat all such standards as open to criticism and revision.Arguments to the effect that we are fallible with regard to all standards of rational inquiry are presented. LÄS MER

  4. 23. Development and Evaluation of Nonparametric Mixed Effects Models

    Författare :Paul Baverel; Mats Karlsson; Radojka Savic; Nils Hoem; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; nonparametric; model; pharmacometrics; pharmacokinetics; pharmacodynamic; imprecision; covariate analysis; parameter distribution; Statistics; computer and systems science; Statistik; data- och systemvetenskap; Pharmaceutical pharmacology; Farmaceutisk farmakologi; Biopharmaceutics; Biofarmaci; Clinical Pharmacology; Klinisk farmakologi; Computer Systems; Datorteknik; Farmakologi; Pharmacology; Statistics; Statistik;

    Sammanfattning : A nonparametric population approach is now accessible to a more comprehensive network of modelers given its recent implementation into the popular NONMEM application, previously limited in scope by standard parametric approaches for the analysis of pharmacokinetic and pharmacodynamic data. The aim of this thesis was to assess the relative merits and downsides of nonparametric models in a nonlinear mixed effects framework in comparison with a set of parametric models developed in NONMEM based on real datasets and when applied to simple experimental settings, and to develop new diagnostic tools adapted to nonparametric models. LÄS MER

  5. 24. Estimation and Inference for Quantile Regression of Longitudinal Data : With Applications in Biostatistics

    Författare :Andreas Karlsson; Johan Lyhagen; Ulf Olsson; Kenneth Carling; Uppsala universitet; []
    Nyckelord :Statistics; Bias correction; Bootstrap; Dependent errors; Hypothesis testing; Nonlinear model; Simulation study; Statistik;

    Sammanfattning : This thesis consists of four papers dealing with estimation and inference for quantile regression of longitudinal data, with an emphasis on nonlinear models.The first paper extends the idea of quantile regression estimation from the case of cross-sectional data with independent errors to the case of linear or nonlinear longitudinal data with dependent errors, using a weighted estimator. LÄS MER

  7. 25. Partition Tolerance and Data Consistency in Structured Overlay Networks

    Författare :Shafaat Tallat Mahmood; Seif Haridi; Peter Van Roy; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Structured overlay networks; distributed Hash tables; network partitions and mergers; size estimation; lookup inconsistencies; distributed key-value stores; linearizability; dynamic reconfiguration; replication.; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : Structured overlay networks form a major class of peer-to-peer systems, which are used to build scalable, fault-tolerant and self-managing distributed applications. This thesis presents algorithms for structured overlay networks, on the routing and data level, in the presence of network and node dynamism. LÄS MER