Quantificational Study on Information Asymmetry Based on Information Cognition

Based on information cognition, information asymmetry and its degree are studied by quantificational methods in this paper. From the view of the information forming, information acquisition and information cognition are distinguished to establish the information cognition level model. Based on the model, information asymmetry and its degree are modeled mathematically in the whole cognition level and the attribute cognition level. It lays a theoretical foundation for measurement of information asymmetry widely, and some characters are given. Case study is conducted to demonstrate the influences of different information sharing modes on information asymmetry and its degree.