Sökning: "SPSA"

Hittade 3 uppsatser innehållade ordet SPSA.

  1. 1. Path Choice Estimation in Urban Rails : Asimulation based optimisation for frequency-based assignment model

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Alexander Adolfsson; [2022]
    Nyckelord :Black-Box Optimisation; Optimization; Simulation based optimisation; Transit Network; Automaton; Urban Transport; Public transportation; Black-Box optimering; Optimering; Simuleringsbaserad Optimering; Transportsystem; Automation; Local Transport; Kollektivtrafik;

    Sammanfattning : Transit system have a large importance in modern urban cities, with urban rail often acting as the central system with it efficient travel time and great capacity. As cities grow in population, so to does the usage of urban rail resulting in increased crowding on the platform and in the trains. LÄS MER

  3. 2. Estimation of Hourly Origin Destination Trip Matrices for a Model of Norrköping

    Master-uppsats, Linköpings universitet/Kommunikations- och transportsystem; Linköpings universitet/Tekniska fakulteten

    Författare :Agnes Lindström; Frida Persson; [2018]
    Nyckelord :Visum; OD-estimation; SPSA; multiple linear regression; macroscopic modelling; traffic demand modelling;

    Sammanfattning : During the last century, the number of car users has increased as an effect of the increasing population growth. To manage the environmental and infrastructural challenges that comes with a more congested traffic network, traffic planning has become of higher importance to analyze the current traffic state and to predict future capacity challenges and effects of investments. LÄS MER

  4. 3. An evaluation of algorithms for real-time strategic placement of sensors

    Kandidat-uppsats, Institutionen för kommunikation och information

    Författare :Jesper Tiberg; [2004]
    Nyckelord :sensor placement real-time algorithms evaluation;

    Sammanfattning : In this work an investigation is performed in whether the algorithms Simultaneous Perturbation Stochastic Approximation (SPSA) and Virtual Force Algorithm (VFA) are suitable for real-time strategic placement of sensors in a dynamic environment. An evaluation of these algorithms is conducted and compared to Simulated Annealing (SA), which has been used before in similar applications. LÄS MER