Sökning: "robust optimering"

Visar resultat 1 - 5 av 12 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; KTH.; [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; KTH.; [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; Lunds universitet.; Lund University.; Lunds universitet.; Lund University.; [2011]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Popular Abstract in Swedish Hur kan man skapa en tredimensionell modell av ett objekt eller en plats från tvådimensionella bilder? Det är den centrala frågan i den här avhandlingen och en viktig fråga i datorseende generellt. Normalt delar man upp problemet i en serie basproblem. 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; KTH.; [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. Metamodel based multi-objective optimization

    Detta är en avhandling från Jönköping : Jönköping University, School of Engineering

    Författare :Kaveh Amouzgar; Högskolan i Jönköping.; [2015]
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER