Sökning: "robust optimering"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden robust optimering.

  1. 1. Multicriteria optimization for managing tradeoffs in radiation therapy treatment planning

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Rasmus Bokrantz; Anders Forsgren; Karl-Heinz Küfer; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Optimization; multicriteria optimization; robust optimization; Pareto optimality; Pareto surface approximation; Pareto surface navigation; intensity-modulated radiation therapy; volumetric-modulated arc therapy; intensity-modulated proton therapy; Optimering; flermålsoptimering; robust optimering; Paretooptimalitet; Paretofrontsapproximation; Paretofrontsnavigering; intensitetsmodulerad strålterapi; rotationsterapi; intensitetsmodulerad protonterapi;

    Sammanfattning : Treatment planning for radiation therapy inherently involves tradeoffs, such as between tumor control and normal tissue sparing, between time-efficiency and dose quality, and between nominal plan quality and robustness. The purpose of this thesis is to develop methods that can facilitate decision making related to such tradeoffs. LÄS MER

  2. 2. Toward Robust Optimization of Adaptive Radiation Therapy

    Detta är en avhandling från Stockholm, Sweden : KTH Royal Institute of Technology

    Författare :Michelle Böck; Anders Forsgren; Minsun Kim; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optimization; adaptive radiation therapy; radiation therapy treatment planning; uncertainty; robust optimization; stochastic programming; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics;

    Sammanfattning : Adaptive radiation therapy is an evolving cancer treatment approach which relies on adapting the treatment plan in response to patient-specific interfractional geometric variations occurring during the fractionated treatment. If those variations are not addressed through adaptive replanning, the resulting treatment quality may be compromised. LÄS MER

  3. 3. Robust Algorithms for Multiple View Geometry: Outliers and Optimality

    Detta är en avhandling från Stockholm, Sweden : KTH Royal Institute of Technology

    Författare :Olof Enqvist; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis is concerned with the geometrical parts of computer vision, or more precisely, with the three-dimensional geometry. The overall aim is to extract geometric information from a set of images. Most methods for estimating the geometry of multiple views rely on the existence of robust solvers for a set of basic problems. LÄS MER

  4. 4. Multidimensional inverse problems in imaging and identification using low-complexity models, optimal mass transport, and machine learning

    Detta är en avhandling från Stockholm, Sweden : KTH Royal Institute of Technology

    Författare :Axel Ringh; Johan Karlsson; Rodolphe Sepulchre; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inverse problems; convex optimization; variational regularization; trigonometric moment problems; optimal mass transport; computed tomography; machine learning; analytic interpolation; delay systems; Inversa problem; konvex optimering; variationell regularisering; trigonometriska momentproblem; optimal masstransport; datortomografi; maskininlärning; analytisk interpolation; system med tidsfördröjning; Matematik; Mathematics;

    Sammanfattning : This thesis, which mainly consists of six appended papers, primarily considers a number of inverse problems in imaging and system identification.In particular, the first two papers generalize results for the rational covariance extension problem from one to higher dimensions. LÄS MER

  5. 5. Geometry Based Design Automation Applied to Aircraft Modelling and Optimization

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Kristian Amadori; Petter Krus; Johan Ölvander; Christopher Jouannet; Bento Silva de Mattos; [2012]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Product development processes are continuously challenged by demands for increased efficiency. As engineering products become more and more complex, efficient tools and methods for integrated and automated design are needed throughout the development process. LÄS MER