DEVELOPMENT OF A MICROSCOPIC CROWD DYNAMIC MODEL: INCORPORATING DECISION MAKING CAP ABILITY INTO THE SOCIAL FORCE MODEL
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Date
2011-03
Authors
AHMAD SHUAIB, MOHAMMED MAHMOD
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Abstract
The Social Force Model is one of the most successful microscopic pedestrian models
that represent the well-organized phenomena of the pedestrian flow. However, the
pedestrians' abilities to make decisions in normal and emergency situations have not
been incorporated properly into the model. In normal situations, the pedestrians were
found to be short-sighted in avoiding some anticipated blocked situations. In
emergency situations, several realistic mechanisms of the decision making capability
do not appear within relevant simulations. In this research, the decision-making
capability of the independent pedestrians is enhanced. First, an extension of the model
by granting the pedestrians the ability to investigate the behaviors beyond their own
perception areas is made. The new model considers the density factor inside such areas
and models its effect on the pedestrians' decisions to eliminate the unrealistic behavior.
Second, in evacuation situations, an improvement of selecting an exit from the set of
exits available in the physical environment is made by providing the pedestrians with
an assessment ability of their physical envirpnment and the corresponding dynamic
behavior of the others. Simulation of normal and emergency situations are performed
to validate the work qualitatively by tracing the behavior of the simulated pedestrians
and studying the impact of this behavior on the realism of the original model. A
comparison between the original and the extended models is done. Further work to
calibrate crowd -related parameters to reproduce empirical data is also made
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DEVELOPMENT OF A MICROSCOPIC CROWD DYNAMIC MODEL