Regular Papers -- Flow Graphs and Data Mining -- The Rough Set Exploration System -- Rough Validity, Confidence, and Coverage of Rules in Approximation Spaces -- Knowledge Extraction from Intelligent Electronic Devices -- Processing of Musical Data Employing Rough Sets and Artificial Neural Networks -- Computational Intelligence in Bioinformatics -- Rough Ethology: Towards a Biologically-Inspired Study of Collective Behavior in Intelligent Systems with Approximation Spaces -- Approximation Spaces and Information Granulation -- The Rough Set Database System: An Overview -- Rough Sets and Bayes Factor -- Formal Concept Analysis and Rough Set Theory from the Perspective of Finite Topological Approximations -- Dissertations and Monographs -- Time Complexity of Decision Trees.