Specification of the social force pedestrian model by evolutionary   adjustment to video tracking data
  Based on suitable video recordings of interactive pedestrian motion and improved tracking software, we apply an evolutionary optimization algorithm to determine optimal parameter specifications for the social force model. The calibrated model is then used for large-scale pedestrian simulations of evacuation scenarios, pilgrimage, and urban environments. 
Anders Johansson, Dirk Helbing, and Pradyumn Shukla