The concept of swarm which captures the moving objects that move within arbitrary shape of clusters for certain timestamps that are possibly non- consecutive. The goal of our paper is to find all discrim- inative swarms, namely closed swarm. While the search space for closed swarms is prohibitively huge, we design a method, ObjectGrowth, to efficiently retrieve the answer.
Zhenhui Li, Bolin Ding, Jiawei Han, and Roland Kays, Swarm: Mining Relaxed Temporal Moving Object Clusters, Proc. 2010 Int. Conf. on Very Large Data Bases (VLDB'10), Singapore, Sept. 2010. [link]