Essays about: "mixture of gaussians."

Showing result 1 - 5 of 7 essays containing the words mixture of gaussians..

  1. 1. Exploring Normalizing Flow Modifications for Improved Model Expressivity

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Marcel Juschak; [2023]
    Keywords : Normalizing Flows; Motion Synthesis; Invertible Neural Networks; Glow; MoGlow; Maximum Likelihood Estimation; Generative models; normaliserande flöden; rörelsesyntes; inverterbara neurala nätverk; Glow; MoGlow; maximum likelihood-skattning generativa modeller;

    Abstract : Normalizing flows represent a class of generative models that exhibit a number of attractive properties, but do not always achieve state-of-the-art performance when it comes to perceived naturalness of generated samples. To improve the quality of generated samples, this thesis examines methods to enhance the expressivity of discrete-time normalizing flow models and thus their ability to capture different aspects of the data. READ MORE

  3. 2. Estimating the Market Risk Exposure through a Factor Model with Random Effects

    University essay from Linköpings universitet/Tillämpad matematik; Linköpings universitet/Tekniska fakulteten

    Author : Lukas Börjesson; [2022]
    Keywords : Market risk exposure; non-stationary market risk exposure; non-stationary idiosyncratic risk; factor model; linear regression; linear mixed model; random effects; mixture of gaussians.;

    Abstract : In this thesis, we set out to model the market risk exposure for 251 stocks in the S&P 500 index, during a ten-year period between 2011-04-30 and 2021-03-31. The study brings to light a model not often mentioned in the scientific literature focused on market risk estimation, the linear mixed model. READ MORE

  4. 3. Background Segmentation Methods in Analysis of Live Sport Video Recordings

    University essay from Lunds universitet/Matematik LTH

    Author : Fredrik Hammar; Johan Flinke; [2018]
    Keywords : Image Analysis; Background Foreground Segmentation; Segmentation Evaluation; Live Sports Video Analysis; Mathematics and Statistics;

    Abstract : A sports video analysis application was developed by Spiideo for mobile devices. It presents recordings from practices and competitive games for game-play analysis. Available tools, such as on-screen drawings, require a robust background foreground segmentation. READ MORE

  5. 4. Defect detection and segmentation inmultivariate image streams

    University essay from KTH/Skolan för datavetenskap och kommunikation (CSC)

    Author : BJÖRN HEGSTAM; [2013]
    Keywords : ;

    Abstract : OptoNova is a world leading producer of inspection systems for quality control of surfaces and edges at high rates. They develop their own sensor systems and software and have taken an interest in investigating the possibility of using methods from machine learning to make better use of the available sensor data. READ MORE

  6. 5. EEG enhancement for EEG source localization in brain-machine speller

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Parinaz Babaeeghazvini; [2013]
    Keywords : Brain-Computer interface BCI ; Brain-machine speller; Electroencephalogram EEG ; source localization; source reconstruction;

    Abstract : A Brain-Computer Interface (BCI) is a system to communicate with external world through the brain activity. The brain activity is measured by Electro-Encephalography (EEG) and then processed by a BCI system. EEG source reconstruction could be a way to improve the accuracy of EEG classification in EEGbased brain–computer interface (BCI). READ MORE