Volume III of the Transactions on Rough Sets (TRS) introduces advances in the theory and application of rough sets. These advances have far-reaching impli- tions in a number of researchareas such as approximate reasoning, bioinform- ics, computerscience, datamining, engineering(especially, computerengineering and signal analysis), intelligent systems, knowledge discovery, pattern recog- tion, machineintelligence, andvariousformsoflearning. This volumerevealsthe vigor, breadth and depth in research either directly or indirectly related to the rough sets theory introduced by Prof. Zdzis law...