4Ian Hacking.The Emergence of Probability[M].New Yrk:Can- bridge University Press, 1975.
5Donald Gillies.Philosophical Theories of Probability[M].London and New York:Taylor & Francis Group Routledge ,2000.
6Rudolf Carnap.The Two Concepts of Probability:The Problem of Probability[J]. Philosophy and Phenomenologieal Reseat'ell, 19 45,15(4).
7Ian Hacking.Logic of Statistical Inference[M]. New York:Cam- bridge University Press, 1965 : 193.
8J.Good.Good Thing:The Foundations of Probability and Its Applications[M].Minneapolis :the Univeity of Minnesota, 1 983.
9Frank Lad.The Construction of Probability Theory:A Marxist Discussion[J],Seieuce & Society, 1983,147(3):297.
10Hugo C.Hamaker.Subjective Probabilities and Eechangeability fbrm an Objective Point of View[J].International Statistical Re- view/Revue Irttemationale de Statistique, 1977,45(3) : 223.
