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Showing result 1 - 5 of 11 essays matching the above criteria.

  1. 1. Assessing the Streamline Plausibility Through Convex Optimization for Microstructure Informed Tractography(COMMIT) with Deep Learning

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Xinyi Wan; [2023]
    Keywords : Tractography; dMRI; Filtering Methods; Deep Learning; Classification;

    Abstract : Tractography is widely used in the brain connectivity study from diffusion magnetic resonance imaging data. However, lack of ground truth and plenty of anatomically implausible streamlines in the tractograms have caused challenges and concerns in the use of tractograms such as brain connectivity study. READ MORE

  3. 2. Extremal Mechanisms for Pointwise Maximal Leakage

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Leonhard Grosse; [2023]
    Keywords : Privacy; mechanism design; information leakage; convex optimization; information-theoretic utility; Integritet; Mekanismdesign; informationsläckage; konvex optimering; informationsteoretisk användbarhet.;

    Abstract : In order to implement privacy preservation for individuals, systems need to utilize privacy mechanisms that privatize sensitive data by randomization. The goal of privacy mechanism design is to find optimal tradeoffs between maximizing the utility of the privatized data while providing a strict sense of privacy defined by a chosen privacy measure. READ MORE

  4. 3. Minimum Cost Distributed Computing using Sparse Matrix Factorization

    University essay from KTH/Optimeringslära och systemteori

    Author : Seif Hussein; [2023]
    Keywords : Applied mathematics; optimization; convex optimization; matrix factorization; sparse matrix factorization; distributed computing; linearly separable distributed computing; ADMM; alternating direction method of multipliers; tillämpad matematik; optimering; konvex optimering; matrisfaktorisering; gles matrisfaktorisering; distribuerade beräkningar; admm; alternating direction method of multipliers;

    Abstract : Distributed computing is an approach where computationally heavy problems are broken down into more manageable sub-tasks, which can then be distributed across a number of different computers or servers, allowing for increased efficiency through parallelization. This thesis explores an established distributed computing setting, in which the computationally heavy task involves a number of users requesting a linearly separable function to be computed across several servers. READ MORE

  5. 4. Far-field pattern synthesis of transmitarray antennas using convex optimization techniques

    University essay from KTH/Tillämpad fysik

    Author : Marie Defives; [2022]
    Keywords : Applied physics; Transmitarray antennas; convex optimization; Tillämpad fysik; Transmitarray-antenner; konvex optimering;

    Abstract : Transmitarrays antennas (TAs) can be seen as the planar counterpart of optical lenses. They are composed of thin radiating elements (unit cells) which introduce different local phase shifts on an incident electromagnetic wave, emitted by a primary source, and re-radiate it. READ MORE

  6. 5. Convex Optimization-based Design of a Speed Planner for Autonomous Heavy Duty Vehicles

    University essay from KTH/Optimeringslära och systemteori

    Author : Simon Frölander; Rawan Hasan; [2019]
    Keywords : ;

    Abstract : The objective of this master thesis is to design a speed planner for a heavy duty vehicle (HDV) that focuses on achieving a time efficient and comfortable driving, given different constraints such as road geometry, vehicle dynamics, acceleration, deceleration, speed limits etc. through an optimization based approach, namely by formulating it as a convex problem in a receding horizon fashion. READ MORE