Model and Algorithm for Pick-up Site Optimization Considering Evacuation Demand and Crowd Convenience

The location of crowd pick-up sites is of great practical significance in the regional evacuation planning. Most of the previous studies were from a single point of view of managers or evacuees, and there is a lack of comprehensive studies. Considering evacuation demand and the convenience of evacuees, a two-objective optimizing model is constructed to optimize the selection of evacuation pick-up sites from the set of alternative ones, in which the goal is to maximum the coverage of evacuation demand and to minimize the total walking time of evacuees. Based on the characteristics of the model, an improved algorithm based on heritage algorithm is designed, and a numerical example is given. The results show that a more feasible site selection scheme can be obtained by combining the two aspects.