Historical Review of Variants of Informal Semantics for Logic Programs under Answer Set Semantics: GL'88, GL'91, GK'14, D-V'12

This note presents a historical survey of informal semantics that are associated with logic programming under answer set semantics. We review these in uniform terms and align them with two paradigms: Answer Set Programming and ASP-Prolog -- two prominent Knowledge Representation and Reasoning Paradigms in Artificial Intelligence. Under consideration in Theory and Practice of Logic Programming (TPLP).