Worldwide, there has been a rapid growth in interest in rough set theory and its applications
in recent years. Evidence of this can be found in the increasing number of high-quality …

Since Pawlak [43] proposed the rough set theory in early eighties, many proposals have
been made for generalizing and interpreting rough sets [3, 4, 19, 27, 37, 38, 39, 46, 47, 51 …

The construction of any broadly understood theory of information or infor mation processing
system involves two major methodological processes:(1) abstraction and analysis,(2) …

This paper is a survey of the connections between three-valued logics and rough sets from
the point of view of incomplete information management. Based on the fact that many three …

This chapter reviews three formulations of rough set theory, ie, element-based definition,
granule-based definition, and subsystem-based definition. These formulations are adopted …

Pawlak proposed rough set theory in 1982. It can be seen as an extension of set theory, in
which a subset of a universe is formalized by a pair of sets, ie, the lower and upper …

We investigate the expressive power and computational properties of two different types of
languages intended for speaking about distances. First, we consider a first-order language …

In this paper we provide the first game semantics for the constructive modal logic CK CK. We
first define arenas encoding modal formulas, we then define winning innocent strategies for …

This book is dedicated to the memory of Professor Zdzis {\l} aw Pawlak who passed away
almost six year ago. He is the founder of the Polish school of Artificial Intelligence and one of …

The article focusses on propositional logics with semantics based on rough sets. Many
approaches to rough sets (including generalizations) have come to the fore since the …