Jinling MA
Mr. Jinling MA
Economics
Research Postgraduate Student
Programme

4-year PhD

Field of Study

Economics

Research Interests
  • Mechanism Design and Information Transmission in Game Theory
  • Consumer Behavior Analysis in Applied Mathematics
Education
  • MFin, Peking University
  • BSc, Peking University
Recent Publications
Logic-based updating

We build on AGM belief revision (Alchourrón et al. (1985)) and propose a class of updating rules called pragmatic rules. Pragmatic updating applies to multiple priors and requires that the agent's posteriors be the subset of her priors under which the realized event occurs with probability 1, if such priors exist. We construct a propositional language based on qualitative probability and demonstrate the strong relation between belief updating rules and belief revision rules in this language. We show that an updating rule is consistent with AGM belief revision if and only if it is pragmatic. While maximum likelihood updating is pragmatic in general, full-Bayesian updating is not. We characterize maximum likelihood updating within the AGM framework, and show that full-Bayesian updating can be obtained by dropping one of AGM's postulates.