Bulletin of International Rough Set Society
Volume 1, Number 1

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


Table of Contents


Papers

Some Remarks on Explanation of Data and Specification of Process
     Z. Pawlak   .................................................   1

Quantization of Real Value Attributes: 
Rough Set and Boolean Approach
     S.H. Nguyen and A. Skowron  .................................   5

Predicting Preterm Birth Risk using Machine Learning From Data
with Missing Values
     J.W. Grzymala-Busse and L.K. Goodwin  .......................  17

Constructive and Algebraic Approaches for Generalized Rough
Set Models
     Y.Y. Yao  ...................................................  22

An Overview of Rough Set Theory from the Point View of 
Relational Databases
     T.Y. Lin  ...................................................  30


Reports

Reports on RSFD'96
     A. Nakamura  ................................................  35

RSSC'97 Report
     M. Hadjimichael  ............................................  37

IRSS Calendar (1997)  ............................................  38

Instructions to Authors  
     S. Tsumoto  .................................................  39