Search for dissertations about: "nonparametric function estimation"

Showing result 1 - 5 of 11 swedish dissertations containing the words nonparametric function estimation.

  1. 1. Position Estimation and Tracking in Colloidal Particle Microscopy

    University dissertation from Göteborg : Chalmers University of Technology

    Author : Mats Kvarnström; Göteborgs universitet.; Gothenburg University.; [2005]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; censored regression; colloidal chemistry; depth estimation; diffusion coefficient; nonparametric function estimation; position estimation; rotational symmetry; tracking; template matching; video microscopy;

    Abstract : This thesis presents methods for estimating the locations (including depth) of spherical colloidal particles in images recorded in video microscopy. Understanding the behavior of colloidal interactions and diffusion is of crucial importance in a vast number of areas. READ MORE

  2. 2. Nonparametric Functional Estimation under Order Restrictions

    University dissertation from Centre for Mathematical Sciences, Lund University

    Author : Dragi Anevski; Lunds universitet.; Lund University.; [2000]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; monotonicity; convexity; deconvolution; kernel smoothing; NPMLE; long range dependence; greatest convex minorant; mixing; Density estimation; limit distribution.; regression; Mathematics; Matematik;

    Abstract : This thesis consists of three papers (Papers A-C) on problems in nonparametric functional estimation, in particular density and regression function estimation and deconvolution, under order assumptions. Pointwise limit distribution results are stated for the obtained estimators, which include isotonic regression estimates, nonparametric maximum likelihood estimates of monotone densities, estimates of convex regression and density functions and deconvolution estimates. READ MORE

  3. 3. Local Polynomial Regression with Application on Lidar Measurements

    University dissertation from Centre for Mathematical Sciences, Lund University

    Author : Torgny Lindström; Lunds universitet.; Lund University.; [2004]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mathematics; Matematik; differential equations; Funktioner; differentialekvationer; variance-function estimation.; spatial dependence; nonparametric; local polynomial regression; local bandwidth selection; lidar; heteroscedasticity; Bivariate estimation; differential absorption; Functions;

    Abstract : This thesis deals with the problem of estimating a function or one of its derivatives from a set of measurements, mainly of a bivariate or spatial nature which is so common in environmental applications. In this work particular attention has been on the lidar (light detection and ranging) application which is a versatile technique for measurement of among other things atmospheric trace gases. READ MORE

  4. 4. Asymptotic Behavior of Bayesian Nonparametric Procedures

    University dissertation from Centre for Mathematical Sciences, Lund University

    Author : Yang Xing; Sveriges lantbruksuniversitet.; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; rate of convergence; Adaptation; density function; Hausdorff entropy; noindent Hellinger metric; Kullback-Leibler divergence; log spline density; Markov chain; posterior distribution; consistency; nonparametrics; sieve;

    Abstract : Asymptotics plays a crucial role in statistics. The theory of asymptotic consistency of Bayesian nonparametric procedures has been developed by many authors, including Schwartz (1965), Barron, Schervish and Wasserman (1999), Ghosal, Ghosh and Ramamoorthi (1999), Ghosal, Ghosh and van der Vaart (2000), Shen and Wasserman (2001), Walker and Hjort (2001), Walker (2004), Ghosal and van der Vaart (2007) and Walker, Lijoi and Prunster (2007). READ MORE

  5. 5. Spectral analysis and magnetic resonance spectroscopy

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Tomas Sundin; Uppsala universitet.; Uppsala universitet.; [2001]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nonparametric spectral analysis; magnetic resonance spectroscopy; parameter estimation; maximum likelihood estimation; nonlinear least squares; TECHNOLOGY Information technology Signal processing; TEKNIKVETENSKAP Informationsteknik Signalbehandling; Signal Processing; Signalbehandling;

    Abstract : This dissertation is concerned with nonparametric approaches for spectral analysis (SA) and algorithms for magnetic resonance spectroscopy (MRS) data analysis.A method to obtain the optimal smoothing window for the class of SA methods based on local smoothing of the periodogram is proposed. READ MORE