Search for dissertations about: "Convex Relaxation"

Showing result 6 - 10 of 22 swedish dissertations containing the words Convex Relaxation.

  2. 6. Exploiting Sparse Structures in Source Localization and Tracking

    Author : Maria Juhlin; Matematisk statistik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Source localization; Cramér-Rao bounds; Convex Optimization;

    Abstract : This thesis deals with the modeling of structured signals under different sparsity constraints. Many phenomena exhibit an inherent structure that may be exploited when setting up models, examples include audio waves, radar, sonar, and image objects. READ MORE

  4. 7. Parameter Estimation - in sparsity we trust

    Author : Johan Swärd; Statistical Signal Processing Group; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Parameter estimation; Sparse models; Convex optimization; Symbolic Periodicity; Alternating direction method of multipliers ADMM ; Covariance fitting; multi-pitch estimation problem; Off-grid estimation; Dictionary learning; Atomic norm; Sampling schemes;

    Abstract : This thesis is based on nine papers, all concerned with parameter estimation. The thesis aims at solving problems related to real-world applications such as spectroscopy, DNA sequencing, and audio processing, using sparse modeling heuristics. READ MORE

  5. 8. Short Term Scheduling of Hydrothermal Power Systems With Integer Hydro Constraints

    Author : Nilsson Olof; Lennart Söder; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hydro power; Optimization; Integer Constraints; Lagrange relaxation; Electrical Engineering; Elektro- och systemteknik;

    Abstract : The thesis presents models for short term planning (24 hours) of a hyro dominated hydrothermal power system. The purpose of the models is to minimizae the system operation costs to provide a forecasted load and keep enough spinning reserve... READ MORE

  6. 9. Global Optimization in Computer Vision: Convexity, Cuts and Approximation Algorithms

    Author : Carl Olsson; Matematik LTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Spectral Relaxation; Normalized Cuts; Continuous Cuts; Segmentation; Generalized Convexity; 3D-Reconstruction; Global Optimization; Multiple View Geometry; Trust Region Subproblem;

    Abstract : Computer vision is today a wide research area including topics like robot vision, image analysis, pattern recognition, medical imaging and geometric reconstruction problems. Over the past decades there has been a rapid development in understanding and modeling different computer vision applications. READ MORE

  7. 10. Convex Optimal Power Flow Based on Second-Order Cone Programming: Models, Algorithms and Applications

    Author : Zhao Yuan; Mohammad Reza Hesamzadeh; Mario Paolone; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Optimal Power Flow; Second-Order Cone Programming; Distribution Locational Marginal Pricing; Wind Power; Super Grid; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Optimal power flow (OPF) is the fundamental mathematical model to optimally operate the power system. Improving the solution quality of OPF can help the power industry save billions of dollars annually. Past decades have witnessed enormous research efforts on OPF since J. READ MORE