適用于libsvm的iris數據集,txt格式 示例： 1 1:4.6 2:3.2 3:1.4 4:0.2 1 1:5.3 2:3.7 3:1.5 4:0.2 1 1:5.0 2:3.3 3:1.4 4:0.2 2 1:7.0 2:3.2 3:4.7 4:1.4 2 1:6.4 2:3.2 3:4.5 4:1.5 2 1:6.9 2:3.1 3:4.9 4:1.5 2 1:5.5 2:2.3 3:4.0 4:1.3 2 1:6.5 2:2.8 3:4.6 4:1.5 2 1:5.7 2:2.8 3:4.5 4:1.3 2 1:6.3 2:3.3 3:4.7 4:1.6 2 1:4.9 2:2.4 3:3.3 4:1.0 3 1:5.7 2:2.5 3:5.0 4:2.0 3 1:5.8 2:2.8 3:5.1 4:2.4 3 1:6.4 2:3.2 3:5.3 4:2.3 3 1:6.5 2:3.0 3:5.5 4:1.8 3 1:7.7 2:3.8 3:6.7 4:2.2 3 1:7.7 2:2.6 3:6.9 4:2.3