there should be two folders one with codes and one with data as shown following list.

CD:
----------
CD\matlab
CD\data
CD\data\training
8_1_1.mat
8_2_0.mat
8_2_1.mat
8_3_0.mat
8_3_1.mat
8_4_0.mat
8_4_1.mat
8_5_0.mat
8_5_1.mat
CD\data\test
8_12_1.mat
8_15_0.mat
8_17_1.mat
8_20_0.mat