A Modification of the Social Force Model by Foresight

Details A Modification of the Social Force Model by Foresight A Modification of the Social Force Model by Foresight

2009-12-03

arxiv.org/abs/0912.0634v1

Physics

Physics and Society

6 pages, 5 figures, Preprint from PED 2008 (Wuppertal)

Scientific paper

The motion of pedestrian crowds (e.g. for simulation of an evacuation situation) can be modeled as a multi-body system of self driven particles with repulsive interaction. We use a few simple situations to determine the simplest allowed functional form of the force function. More complexity may be necessary to model more complex situations. There are many unknown parameters to such models, which have to be adjusted correctly. The parameters can be related to quantities that can be measured independently, like step length and frequency. The microscopic behavior is, however, only poorly reproduced in many situations, a person approaching a standing or slow obstacle will e.g. show oscillations in position, and the trajectories of two persons meeting in a corridor in opposite direction will be far from realistic and somewhat erratic. This is inpart due to the assumption of instantaneous reaction on the momentary situation. Obviously, persons react with a small time lag, while on the other hand they will anticipate changing situations for at least a short time. Thus basing the repulsive interaction on a (linear) extrapolation over a short time (e.g. 1 s) eliminates the oscillations at slowing down and smoothes the patterns of giving way to others to a more realistic behavior. A second problem is the additive combination of binary interactions. It is shown that combining only a few relevant interactions gives better model performance.

Affiliated with

Also associated with

No associations

Rating

A Modification of the Social Force Model by Foresight does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A Modification of the Social Force Model by Foresight, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Modification of the Social Force Model by Foresight will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-517289