决策树---红酒分类
(178, 13) [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2]
['alcohol', 'malic_acid', 'ash', 'alcalinity_of_ash', 'magnesium', 'total_phenols', 'flavanoids', 'nonflavanoid_phenols', 'proanthocyanins', 'color_intensity', 'hue', 'od280/od315_of_diluted_wines', 'proline'] ['class_0' 'class_1' 'class_2']
0 1 2 ... 11 12 0
count 178.000000 178.000000 178.000000 ... 178.000000 178.000000 178.000000
mean 13.000618 2.336348 2.366517 ... 2.611685 746.893258 0.938202
std 0.811827 1.117146 0.274344 ... 0.709990 314.907474 0.775035
min 11.030000 0.740000 1.360000 ... 1.270000 278.000000 0.000000
25% 12.362500 1.602500 2.210000 ... 1.937500 500.500000 0.000000
50% 13.050000 1.865000 2.360000 ... 2.780000 673.500000 1.000000
75% 13.677500 3.082500 2.557500 ... 3.170000 985.000000 2.000000
max 14.830000 5.800000 3.230000 ... 4.000000 1680.000000 2.000000
[8 rows x 14 columns]
准确度: 0.9444444444444444
digraph Tree {
node [shape=box, style="filled, rounded", color="black", fontname="helvetica"] ;
edge [fontname="helvetica"] ;
0 [label="类黄酮 <= 2.3\nentropy = 1.56\nsamples = 124\nvalue = [44, 49, 31]\nclass = 雪莉", fillcolor="#f3fdf7"] ;
1 [label="颜色强度 <= 3.825\nentropy = 0.993\nsamples = 69\nvalue = [0, 38, 31]\nclass = 雪莉", fillcolor="#dbfae8"] ;
0 -> 1 [labeldistance=2.5, labelangle=45, headlabel="True"] ;
2 [label="entropy = 0.0\nsamples = 35\nvalue = [0, 35, 0]\nclass = 雪莉", fillcolor="#39e581"] ;
1 -> 2 ;
3 [label="类黄酮 <= 1.4\nentropy = 0.431\nsamples = 34\nvalue = [0, 3, 31]\nclass = 贝尔摩德", fillcolor="#8d4ce8"] ;
1 -> 3 ;
4 [label="entropy = 0.0\nsamples = 31\nvalue = [0, 0, 31]\nclass = 贝尔摩德", fillcolor="#8139e5"] ;
3 -> 4 ;
5 [label="entropy = 0.0\nsamples = 3\nvalue = [0, 3, 0]\nclass = 雪莉", fillcolor="#39e581"] ;
3 -> 5 ;
6 [label="脯氨酸 <= 679.0\nentropy = 0.722\nsamples = 55\nvalue = [44, 11, 0]\nclass = 琴酒", fillcolor="#eca06a"] ;
0 -> 6 [labeldistance=2.5, labelangle=-45, headlabel="False"] ;
7 [label="entropy = 0.0\nsamples = 10\nvalue = [0, 10, 0]\nclass = 雪莉", fillcolor="#39e581"] ;
6 -> 7 ;
8 [label="颜色强度 <= 3.435\nentropy = 0.154\nsamples = 45\nvalue = [44, 1, 0]\nclass = 琴酒", fillcolor="#e6843d"] ;
6 -> 8 ;
9 [label="entropy = 0.0\nsamples = 1\nvalue = [0, 1, 0]\nclass = 雪莉", fillcolor="#39e581"] ;
8 -> 9 ;
10 [label="entropy = 0.0\nsamples = 44\nvalue = [44, 0, 0]\nclass = 琴酒", fillcolor="#e58139"] ;
8 -> 10 ;
}
进程已结束，退出代码为 0