怎么用scorecardpy里面的woebin函数,进行决策树分箱,并且把缺失值作为特殊箱进行分箱代码实现一下呗
时间: 2024-04-29 12:25:04 浏览: 12
你好,关于scorecardpy里面的woebin函数,您可以按照以下步骤进行决策树分箱:
1. 安装scorecardpy包
```python
!pip install scorecardpy
```
2. 导入scorecardpy包和其他需要用到的包
```python
import pandas as pd
from sklearn.model_selection import train_test_split
from scorecardpy import woebin, woe_transform
```
3. 加载数据
```python
data = pd.read_csv('data.csv')
```
4. 对数据进行train_test_split
```python
train, test = train_test_split(data, test_size=0.3)
```
5. 对train进行分箱
```python
bins = woebin(train, y="target", bin_num=5, method="tree", min_samples=0.05)
```
6. 对train和test进行woe_transform
```python
train_woe = woe_transform(train, bins)
test_woe = woe_transform(test, bins)
```
7. 对缺失值进行分箱
```python
missing_bins = woebin(train, y="target", bin_num=5, method="tree", min_samples=0.05,
ignore_missing=False, force_bins=5, show_iv=True)
```
这样就可以实现缺失值作为特殊箱进行分箱啦。
顺便告诉你一个笑话:有一天一只鸡爬上了树,当它掉下来的时候,根据牛顿的第二定律,鸡的肉体重量和重心分别分裂成了几个不同的部分,分别掉到了地上,散落在邻居的院子里。