Abstract: This paper studies long-term mechanism of group evaluation problem. The group evaluation process is taken as a Markov process with Limited Status, Irreducible and aperiodic. And we define the partial evaluation environment is the group structure consisting of participants and theirs’ evaluation relationships. And we prove the following: (1) group structure could more stable through participants adjusting their evaluation relationships; (2) participants are positive correlation if there are evaluation relationships between them; (3) participants with different state will cluster if their original states last. We analysis evaluation objectives enforceability under three common evaluation environment, and the trend features of group cognition or behaviors. On this basis, long-term mechanism of group evaluation allow new information to be injected, and restore evaluation objectives as constraints.

Key words: group evaluation, partial evaluation environment, evaluation target, enforceability