ESmodels: An Epistemic Specification Solver

ABSTRACT. This paper introduces an epistemic specification solver ESmodels, which is designed and implemented as an experiment platform to investigate the semantics, language, related reasoning algorithms, and possible applications of epistemic specifications.We first give the epistemic specification language of ESmodels and its semantics. The language only employs one modal operator K but we prove that it is able to represent luxuriant modal operators by presenting transformation rules. Then, we describe basic algorithms and optimization approaches used in ESmodels. After that, we discuss several applications of ESmodels in commonsense reasoning, conformant planning, constraint satisfaction. Finally, we conclude with perspectives.