Ranking Functions, AGM Style
Wolfgang Spohn · 1999
Ranking functions, having their first appearance under the name „ordinale Konditionalfunktionen “ in my Habilitationsschrift submitted in 1983, had several precursors of which I was only incompletely aware, among them Shackle’s functions of potential surprise (see Shackle 1969), Rescher’s plausibility indexing (see Rescher 1976), Adams ’ ε-semantics (see Adams 1975), Cohen’s inductive probabilities (see Cohen 1977), Shafer’s consonant belief functions (see Shafer