Sökning: "convex"

Visar resultat 6 - 10 av 174 uppsatser innehållade ordet convex.

  1. 6. Stochastic Frank-Wolfe Algorithm : Uniform Sampling Without Replacement

    Master-uppsats, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :Olof Håkman; [2023]
    Nyckelord :Stochastic Frank-Wolfe; Stochastic optimization; Sampling without replacement;

    Sammanfattning : The Frank-Wolfe (FW) optimization algorithm, due to its projection free property, has gained popularity in recent years with typical application within the field of machine learning. In the stochastic setting, it is still relatively understudied in comparison to the more expensive projected method of Stochastic Gradient Descent (SGD). LÄS MER

  3. 7. Improvements to Planar Convex Hull Algorithms

    Master-uppsats, Lunds universitet/Institutionen för datavetenskap

    Författare :Björn Magnusson; Erik Amirell Eklöf; [2023]
    Nyckelord :Technology and Engineering;

    Sammanfattning : .... LÄS MER

  4. 8. Optimizing First-Order Method Parameters via Differentiation of the Performance Estimation Problem

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Anton Åkerman; [2023]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This thesis treats the problem of finding optimal parameters for first-order optimization methods. In part, we use the Performance Estimation Problem (PEP), a framework for convergence analysis of first-order optimization methods. LÄS MER

  5. 9. Adjoint optimization of a liquid-cooled heat sink

    Master-uppsats, KTH/Teknisk mekanik

    Författare :Roven Pinto; [2023]
    Nyckelord :Adjoint method; topology optimization; porosity; OpenFOAM;

    Sammanfattning : Improving the design of flow channels in a liquid-cooled heat sink is critical for boosting the capabilities of electronic components as well as reducing energy usage by the pump. This work explores the use of topology optimization to minimize the pressure difference across a heat sink and consequently, the energy used to supply the liquid. LÄS MER

  7. 10. Assessing the Streamline Plausibility Through Convex Optimization for Microstructure Informed Tractography(COMMIT) with Deep Learning

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Xinyi Wan; [2023]
    Nyckelord :Tractography; dMRI; Filtering Methods; Deep Learning; Classification;

    Sammanfattning : Tractography is widely used in the brain connectivity study from diffusion magnetic resonance imaging data. However, lack of ground truth and plenty of anatomically implausible streamlines in the tractograms have caused challenges and concerns in the use of tractograms such as brain connectivity study. LÄS MER