We are happy to present this book "Data Mining in Decision Making - A Multi Rule Algorithm." This book is helpful for those who find interest in data mining techniques and are keen to reserach new ways to make these techiniques useful to human beings.The Multi Rule algorithm proposed in the book will be helpful to students to get an idea and the direction to work for preparing their dissertation and thesis of their course. Hope the content of this book will prove worth and you will enjoy reading this book. (Ashish Seth / Kirti Seth)