The flowchart consists of three rectangular boxes arranged in a hierarchical structure. At the top center is a rectangular box labeled “D R T s”. A vertical line descends from the bottom of the “D R T s” box and branches into a horizontal line. This horizontal line leads to two rectangular boxes positioned side-by-side at the bottom. The box to the left is labeled “Feature Selection (M S E filter)”, and the box to the right is labeled “Feature Extraction (P C A)”.