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1	Evidence of Convective Instability in Congested Traffic Flow: A Systematic Empirical and Theoretical Investigation Treiber, Martin, Kesting, Arne 20 May 2019 (has links) An extended open system such as traffic flow is said to be convectively unstable if perturbations of the stationary state grow but propagate in only one direction, so they eventually leave the system. By means of data analysis, simulations, and analytical calculations, we give evidence that this concept is relevant for instabilities of congested traffic flow. We analyze detector data from several hundred traffic jams and propose estimates for the linear growth rate, the wavelength, the propagation velocity, and the severity of the associated bottleneck that can be evaluated semi-automatically. Scatter plots of these quantities reveal systematic dependencies. On the theoretical side, we derive, for a wide class of microscopic and macroscopic traffic models, analytical criteria for convective and absolute linear instabilities. Based on the relative positions of the stability limits in the fundamental diagram, we divide these models into five stability classes which uniquely determine the set of possible elementary spatiotemporal patterns in open systems with a bottleneck. Only two classes, both dominated by convective instabilities, are compatible wiqth observations. By means of approximate solutions of convectively unstable systems with sustained localized noise, we show that the observed spatiotemporal phenomena can also be described analytically. The parameters of the analytical expressions can be inferred from observations, and also (analytically) derived from the model equations. info:eu-repo/classification/ddc/380 ddc:380
2	Application-Based Network Traffic Generator for Networking AI Model Development Alsulami, Khalil Ibrahim D 18 May 2021 (has links) No description available. Artificial Intelligence Communication Computer Engineering Computer Science Educational Software Educational Technology Electrical Engineering Information Science Information Systems Information Technology Systems Science Technical Communication Technology NS-3 Artificial Intelligent network traffic traffic generator traffic simulator LSTM AI classification PCAP traffic flow packets payload database traffic database AI network dataset AI-based network networking AI models AI algorithm Finding highest peaks

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Evidence of Convective Instability in Congested Traffic Flow: A Systematic Empirical and Theoretical Investigation

Application-Based Network Traffic Generator for Networking AI Model Development