Sökning: "OD estimation"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden OD estimation.

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. Data-driven methods for estimation of dynamic OD matrices

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

   Författare :Ina Eriksson; Lina Fredriksson; [2021]
   Nyckelord :Large-scale mobility data; Dynamic OD matrix; Unsupervised learning; Sensor fusion; Kalman filter; Principal component analysis; Online estimation; OD estimation;

   Sammanfattning : The idea behind this report is based on the fact that it is not only the number of users in the traffic network that is increasing, the number of connected devices such as probe vehicles and mobile sources has increased dramatically in the last decade. These connected devices provide large-scale mobility data and new opportunities to analyze the current traffic situation as they traverse through the network and continuously send out different types of information like Global Positioning System (GPS) data and Mobile Network Data (MND). LÄS MER

4. 3. Daily pattern recognition of dynamic origin-destination matrices using clustering and kernel principal component analysis

   Master-uppsats, KTH/Transportplanering

   Författare :Zhiwu Dong; [2021]
   Nyckelord :origin-destination; pattern recognition; principal component analysis; kernel principal component analysis; k-means cluster; ursprung-destination; mönsterigenkänning; huvudkomponentanalys; analys av kärnhuvudkomponent; k-medelkluster;

   Sammanfattning : Origin-Destination (OD) matrix plays an important role in traffic management and urban planning. However, the OD estimation demands large data collection which has been done in past mostly by surveys with numerous limitations. LÄS MER

5. 4. Improvement of a Space Surveillance Tracking Analysis Tool

   Master-uppsats, Luleå tekniska universitet/Rymdteknik

   Författare :Ismail Ugur Dundar; [2018]
   Nyckelord :;

   Sammanfattning : Since the beginning of space exploration, the amount of space debris has increased with thedevelopment of new space technologies. In fact, when a collision happens, new space debris aregenerated. Hence, collision risk between space debris and operational satellites rises. LÄS MER

7. 5. 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