... et al., 1999], and expands rough set’s twin-concept tomulti-concept classification.Through this integration, RClass* has combined the strengths of rough set theory and the GA-basedsearch mechanism. ... amplitudes in bands less than ‘1X’ and ‘1X’A1: the ratio of peak amplitudes in band ‘1X’ and its initial record (in good condition)A2: the ratio of peak amplitudes in bands ‘2X’ and ‘1X’A3: ... Handbook of Applications and Advances of the Rough Sets Theory,Ed. R. Slowinski, pp. 3-8 . Kluwer Academic Publishers, Dordrecht, Netherlands.Khoo, L. P., Tor, S. B., and Zhai, L. Y. A Rough-Set...