1[1]Haack. S: Philosophy of Logics, Cambridge UniversityPress, 1978, P17.
2[15]这一特征又被称为归纳的"保假性",最早为R.S. Michalski 指出 . 见 R. S. Michalski: Understand ing the Nature of Learning: Issues and Research Direc tions, in R. S. Michalski, J. G. Carbonell, T. M.Mitchell: Machine Learning: an Artificial Intelligence Approach, Vol. Ⅱ , California: Morgan Kaufmann Pub lishers, 1986, p. 8.