... seasonal and irregular components was motivated mainly by business analysts, who wanted to get a clearer picture of O Maimon, L Rokach (eds.), Data Mining and Knowledge Discovery Handbook, 2nd ed., ... that facilitate the use of Data Mining algorithms for real-world databases In the information age, data is automatically collected and therefore the database available for mining can be quite large, ... 51 Data Mining using Decomposition Methods Lior Rokach1 and Oded Maimon2 Department of Information System Engineering, Ben-Gurion University, Beer-Sheba, Israel, liorrk@bgu.ac.il Department...