The Research Of Indirect Reciprocity Based On Complicated Reputation System

The situation of long-term transaction with acquaintances is becoming scarce.The tendency of global economy is gradually toward frequently quick, one-off mode of transaction and the situation of interaction with stranger is getting increasingly more.One incapably made judgments absolutely based on the personal experiences,he had to turn to other individual to understand the strange transaction opponent.Therefore, a research of indirect reciprocity is extremely important and urgent.At present it mostly based on the binary assessment reputation system,primary assessment strategies were brought out mainly based on this background.When indirect reciprocity applied complicated reputation system(similar to the assessment standards of actual human being society)to weigh the individual reputation,the problem would be interesting and intricate,naturally encounter a raft of questions which we never got to,and the condition and restraint taken into account is more and complicated than ones of binaryassessment reputation system.First and foremost,in this paper,as well as two new forms of indirect reciprocity were proposed,the further research and exposition of the classification of indirect reciprocity were done according to the define of indirect reciprocity and the research what Martin A. Nowak & Karl Sigmund had done.Besides,this paper charactered the complicated reputation system of indirect reciprocity,and proposed its mathematical model and explained it in detail.In the model, definitely,the increase and decrease of reputation value were depicted by different fuction respectively to be closer to the cognitive standards of actual human being society.And this paper described the dilemma of probably encountering if this reputation system was used by indirect reciprocity,detailedly depicted the characteristic and cause of the dilemma.The punishment mechanism with mediation was proposed to solve the negative effect due to this dilemma, and in this paper,detailed the rationality of using punishment mechanism and the importance and course of mediation.Through these mechanisms guaranteed the stabilization and high frequency of indirect reciprocity while restrained vicious or retaliative punishment. Lastly,this paper got large amounts of data by a relatively complete experiment, and came to the conclusion that indirect reciprocity could also develop steadily.Through these data also would prove that punishment system boosted the indirect reciprocity,testify the importance of mediation.The anticipated results were basically gained by the experiment.