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# Operational models
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Four operational models are implemented in `jpscore`. They define the update rules how pedestrian move from one step to the next.
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### [Generalized Centrifugal Force Model][#GCFM]
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A force-based model.
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Usage:
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```xml
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<model operational_model_id="1" description="gcfm">
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```
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### [Gompertz Model][#gompertz]
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A force-based model.
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Usage:
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```xml
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<model operational_model_id="2" description="gompertz">
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```
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### [Collision-free speed model][#Tordeux2015]
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A velocity-based model
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Usage:
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```xml
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<model operational_model_id="3" description="Tordeux2015">
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```
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### [Wall-avoidance model][#ModelGraf2015]
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A velocity-based model
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Usage:
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```xml
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<model operational_model_id="4" description="gradnav">
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```
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[#GCFM]: http://journals.aps.org/pre/abstract/10.1103/PhysRevE.82.046111 "Mohcine Chraibi, Armin Seyfried, and Andreas Schadschneider Phys. Rev. E 82, 046111"
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[#gompertz]: http://trg-india.org/trg_conference_2015 "Kemloh Wagoum, Armel Ulrich, Mohcine Chraibi, Jun Zhang and Gregor Lämmel. JuPedSim: An Open Framework for Simulating and Analyzing the Dynamics of Pedestrians. In 3rd Conference of Transportation Research Group of India, 2015."
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[#Tordeux2015]: http://arxiv.org/abs/1512.05597) "Tordeux, Antoine, Chraibi, Mohcine and Seyfried, Armin, Collision-free speed model for pedestrian dynamics. In Traffic and Granular Flow '15, to appear."
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[#ModelGraf2015]: https://owncloud.zam.kfa-juelich.de/index.php/s/MomKWVu6mFvnrSf "Arne, Graf Master thesis" |