Essays about: "kernel"

Showing result 1 - 5 of 311 essays containing the word kernel.

  1. 1. Nonlinear Methods of Aerodynamic Data-driven Reduced Order Modeling

    University essay from Uppsala universitet/Avdelningen för beräkningsvetenskap

    Author : Arvid Forsberg; [2022]
    Keywords : machine learning; aerodynamics; autoencoder; kernel transformation; principal component analysis; nonlinear; regression; modeling; surrogate model; reduced order modeling; neural network;

    Abstract : Being able to accurately approximate outputs of computationally expensive simulations for arbitrary input parameters, also called missing points estimation, is central in many different areas of research and development with applications ranging from uncertainty propagation to control system design to name a few. This project investigates the potential of kernel transformations and nonlinear autoencoders as methods of improving the accuracy of the proper orthogonal decomposition method combined with regression. READ MORE

  2. 2. Predicting Reactor Instability Using Neural Networks

    University essay from KTH/Fysik

    Author : Hilborn Hubert; [2022]
    Keywords : Boiling Water Reactors; Density Wave Instability; Multi-Layer Perceptron; Support Vector Regression; Kernel-Ridge Regression;

    Abstract : The study of the instabilities in boiling water reactors is of significant importance to the safety withwhich they can be operated, as they can cause damage to the reactor posing risks to both equipmentand personnel. The instabilities that concern this paper are progressive growths in the oscillatingpower of boiling-water reactors. READ MORE

  3. 3. Determinantal Point Processes

    University essay from KTH/Fysik

    Author : Marve Grönblad Vesterinen; Viktor Enbom; [2022]
    Keywords : Point Processes; Determinantal Point Processes;

    Abstract : We present and prove some important theorems regarding determinantal point processes. In particular we focus on existance and uniqueness theorems. Furthermore, we present an algorithm for generating determinantal point processes with a finite-dimensional projection kernel. READ MORE

  4. 4. Runtime Detection of use of Vulnerable Code with a Fine-Grained Resolution

    University essay from Umeå universitet/Institutionen för datavetenskap

    Author : Elias Lindkvist; [2022]
    Keywords : ;

    Abstract : We as a society are becoming increasingly dependent on software-based solutions for critical infrastructure. As this dependence grows, so does the opportunities for malicious actors to exploit vulnerabilities which now pose real risks to society and human life. READ MORE

  5. 5. Modeling of Low-Energy Neutron Scattering in Liquid Hydrogen Using NCrystal

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/European Spallation Source ESS AB; Lunds universitet/Kärnfysik

    Author : Tim Günter; [2022]
    Keywords : ESS; European Spallation Source; neutron; scattering; moderator; liquid hydrogen; modeling; ncrystal; njoy; Physics and Astronomy;

    Abstract : The European Spallation Source ESS, under construction in Lund, Sweden, aims to produce high-brightness and intensity neutrons for a multitude of experiments upon completion. An efficient production of neutrons requires elaborate understanding of the moderation process which slows the neutrons from relativistic speed to a kinetic energy of meV. READ MORE