Abstract
In this paper, a random matching model is elaborated o characterize bi-lateral interregional human contacts. The bi-lateral contacts can realize only when both parties agree to meet each other. Thus, mutual agreement is the core of our contacts modeling. Spatial distributions of bi-lateral contacts can be described as results of rondom matching by potential meeting partners. The failure in agreement in meeting is the major source of inefficiency in human contacts among cities/regions. The paper provides the random matching model to describe the generation mechanism of the inter-city human contacts.
