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- W2762022802 abstract "Modeling pedestrian movement is an interesting problem both in statistical physics and in computational physics. Update schemes of cellular automaton (CA) models for pedestrian dynamics govern the schedule of pedestrian movement. Usually, different update schemes make the models behave in different ways, which should be carefully recalibrated. Thus, in this paper, we investigated the influence of four different update schemes, namely parallel/synchronous scheme, random scheme, order-sequential scheme and shuffled scheme, on pedestrian dynamics. The multi-velocity floor field cellular automaton (FFCA) considering the changes of pedestrians’ moving properties along walking paths and heterogeneity of pedestrians’ walking abilities was used. As for parallel scheme only, the collisions detection and resolution should be considered, resulting in a great difference from any other update schemes. For pedestrian evacuation, the evacuation time is enlarged, and the difference in pedestrians’ walking abilities is better reflected, under parallel scheme. In face of a bottleneck, for example a exit, using a parallel scheme leads to a longer congestion period and a more dispersive density distribution. The exit flow and the space–time distribution of density and velocity have significant discrepancies under four different update schemes when we simulate pedestrian flow with high desired velocity. Update schemes may have no influence on pedestrians in simulation to create tendency to follow others, but sequential and shuffled update scheme may enhance the effect of pedestrians’ familiarity with environments." @default.
- W2762022802 created "2017-10-20" @default.
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- W2762022802 date "2018-02-01" @default.
- W2762022802 modified "2023-10-13" @default.
- W2762022802 title "Update schemes of multi-velocity floor field cellular automaton for pedestrian dynamics" @default.
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- W2762022802 doi "https://doi.org/10.1016/j.physa.2017.09.049" @default.
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