Abstract
It is supposed that the elements in circulation of rumors mainly consist of importance and vagueness in psychology and marketing fields. In this paper, the influences of vagueness included in circulation of rumors are modeled and analyzed. Rumors including vagueness element are modeled by local influence in agent-based simulations and agents with vague characters are represented by probability. Simulation studies show that the agents with vagueness perform with some randomness and that the action results of these agents have some regularity.