Intelligent Data Engineering and Automated Learning : 4th International Conference IDEAL 2003 Hong Kong China March 21 23 2003. Revised Papers This book constitutes the throughly refereed post proceedings of the 4th International Conference on Intelligent Data Engineering and Automated Learning IDEAL 2003 held in Hong Kong China in March 2003. The 164 revised papers presented were carefully reviewed and selected from 321 submissions; for inclusion in this post proceedings another round of revision was imposed. The papers are organized in topical sections an agents automated learning bioinformatics data mining multimedia information and financial engineering