Sökning: "Fisher Matrix"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden Fisher Matrix.

  1. 1. Avoiding Catastrophic Forgetting in Continual Learning through Elastic Weight Consolidation

    Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Anton Evilevitch; Robert Ingram; [2021]
    Nyckelord :Image classification; DenseNet; Elastic Weight Consolidation; Catastrophic Forgetting; CIFAR100; Bildklassifiering; DenseNet; Elastic Weight Consolidation; Catastrophic Forgetting; CIFAR100;

    Sammanfattning : Image classification is an area of computer science with many areas of application. One key issue with using Artificial Neural Networks (ANN) for image classification is the phenomenon of Catastrophic Forgetting when training tasks sequentially (i.e Continual Learning). LÄS MER

  3. 2. Galaxy clusters and cosmic voids in modified gravity scenarios

    L3-uppsats, Uppsala universitet/Teoretisk astrofysik

    Författare :Sveva Castello; [2019]
    Nyckelord :Cosmology; galaxy clusters; cosmic voids; f R gravity;

    Sammanfattning : The so-called 'cosmic web', comprising cosmic voids and galaxy clusters, has been proven to be extremely sensitive to deviations from General Relativity. This could be further investigated by future large-scale surveys, such as with the European Space Agency satellite Euclid. LÄS MER

  4. 3. Evaluation of alternative methods forquality control of Tungsten Carbide : An evaluation of four different particle measuring techniques

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för ekonomi, teknik och samhälle

    Författare :Markus Näsman; [2019]
    Nyckelord :Particle measurement; Quality control; Tungsten Carbide; Hard metal; Fisher Sub-Sieve Sizer; Brunauer Emmett Teller; X-ray Diffraction; Laser Diffraction;

    Sammanfattning : The purpose of this study was to evaluate four different measuring methods as potentialquality control tests for Tungsten Carbide (WC) raw material used in the hard metalmanufacturing at Seco Tools Fagersta. This was warranted as the current quality testcalled the HcK test, is very time consuming and the results provided that are used formilling time calculations cannot be relied on. LÄS MER

  5. 4. Improving the Modeling Framework for DCE-MRI Data in Hepatic Function Evaluation

    Master-uppsats, Institutionen för medicin och hälsa; Hälsouniversitetet

    Författare :Anneli Mossberg; [2013]
    Nyckelord :DCE-MRI; modeling; irregular sampling; spatio-temporal standard deviation estimation; sampling time optimization; regional optimization; liver function evaluation; systems biology;

    Sammanfattning : Background Mathematical modeling combined with prior knowledge of the pharmacokinetics of the liver specific contrast agent Gd-EOB-DTPA has the potential to extract more information from Dynamic Contrast Enhanced Magnetic Resonance Imaging (DCE-MRI) data than previously possible. The ultimate goal of that work is to create a liver model that can describe DCE-MRI data well enough to be used as a diagnostic tool in liver function evaluation. LÄS MER

  7. 5. Using Approximative Methods in Riemann Manifold Metropolis Adjusted Langevin Algorithm

    Magister-uppsats, Lunds universitet/Matematisk statistik

    Författare :Filip Erntell; [2012]
    Nyckelord :Mathematics and Statistics;

    Sammanfattning : When sampling from target densities with high correlation using the Metropolis-Hastings algorithm, performance can be improved by considering a discretization of a Langevin diffusion defined on the Riemann manifold as proposal mechanism. Through the metric tensor of the manifold, it is possible to capture the curvature of the parameter space and adjust for the correlation and differences in magnitude of variance. LÄS MER