Search for dissertations about: "surrogate model"

Showing result 1 - 5 of 50 swedish dissertations containing the words surrogate model.

  1. 1. Input Calibration, Code Validation and Surrogate Model Development for Analysis of Two-phase Circulation Instability and Core Relocation Phenomena

    University dissertation from Stockholm : Kungliga Tekniska högskolan

    Author : Viet-Anh Phung; KTH.; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Reactor system code; input calibration; code validation; surrogate model; two-phase circulation flow instability; in-vessel core relocation; genetic algorithm; artificial neural network; Reaktorsystemkod; indata kalibrering; kodvalidering; surrogatmodell; två-fas cirkulationsflöde; instabilitet; härdrelokering i reaktortanken; genetisk algoritm; artificiella neurala nätverk; Physics; Fysik;

    Abstract : Code validation and uncertainty quantification are important tasks in nuclear reactor safety analysis. Code users have to deal with large number of uncertain parameters, complex multi-physics, multi-dimensional and multi-scale phenomena. READ MORE

  2. 2. Design and Optimization under Uncertainties A Simulation and Surrogate Model Based Approach

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Johan Persson; Linköpings universitet.; Linköpings universitet.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis deals with development of complex products via modeling and simulation, and especially the use of surrogate models to decrease the computational efforts when probabilistic optimizations are performed. Many methods that can be used to perform probabilistic optimizations exist and this thesis strives to present and demonstrate the capabilities of a few of them. READ MORE

  3. 3. Efficient Optimization of Complex Products A Simulation and Surrogate Model Based Approach

    University dissertation from Linköping : Linköping University Electronic Press

    Author : Johan Persson; Linköpings universitet.; Linköpings universitet.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : This thesis investigates how to use optimization efficiently when complex products are developed. Modelling and simulation are necessary to enable optimization of products, but here it is assumed that verified and validated models of the products and their subsystems are available for the optimization. READ MORE

  4. 4. A trust-privacy model of customers' willingness to be profiled and to transact online theoretical model and empirical estimation

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Atanu Nath; [2007]
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Industriell marknadsföring; Industrial Marketing;

    Abstract : Privacy concerns are cited to be on the rise due to intense personalization efforts by online firms. Alongside, trust placed in stores has been identified as a key component behind consumer willingness to transact online. READ MORE

  5. 5. Metamodel based multi-objective optimization

    University dissertation from Jönköping : Jönköping University, School of Engineering

    Author : Kaveh Amouzgar; Högskolan i Jönköping.; [2015]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Multi-objective optimization; strength Pareto evolutionary algorithm; SPEA2; metamodel; surrogate model; response surface; radial basis functions; RBF;

    Abstract : As a result of the increase in accessibility of computational resources and the increase in the power of the computers during the last two decades, designers are able to create computer models to simulate the behavior of a complex products. To address global competitiveness, companies are forced to optimize their designs and products. READ MORE