Bulletin of International Rough Set Society
Volume 1, Number 2

Editor:                     S. Tsumoto
Managing Editor:            Y.Y. Yao
Electronic Managing Editor: M. Hadjimichael


Table of Contents


Papers

Searching for Proper Approximation Space
     J. Stepaniuk  ...............................................  43

Machine Discovery in Databases with Probabilistic Rough Classifiers
     Z. Piasta, A. Lenarcik and S. Tsumoto  ......................  51


Rough Set Software

A Software System for Rough Data Analysis
     A. Ohrn, J.. Komorowski, A. Skowron and P. Synak  ...........  58


New Book from Physica Verlag

Rough Sets in Knowledge Discovery, Part I and II
A. Skowron and L. Polkowski  .....................................  60


IRSS Calendar ....................................................  62


Workshops and Conferences 

EUFIT-97: a list of papers  ......................................  63

Instructions to Authors  
     S. Tsumoto  .................................................  65