如何报告 pandas 中一列与其他列的相关性

Question

我有一个数据为：

df1 df2 df3 df4 df5
1    3  3   4    5
4    4  3   4    3
5    5  1   -2   1
9    7  3   0    -2

我想报告 df1 列与其他列（df2、df3、df4 和 df5）之间的相关性很强

输出应如下所示：

df1 is strongly corelated to df2
 df1 is not strongly corelated to df3
 df1 is not strongly corelated to df4
 df1 is strongly corelated to df5

Answer 1

您可以使用 df.corr() 计算列的成对相关性

Answer 2

Onde ide a 是使用 DataFrame.corrwith 并且此处定义了强相关性，例如绝对值更大，例如 0.7:

m = df.corrwith(df.pop('df1')).abs().gt(0.7)
print (m)
df2     True
df3    False
df4    False
df5     True
dtype: bool

---

for k, v in m.items():
    if v:
       print (f'df1 is strongly corelated to {k}')
    else:
       print (f'df1 is not strongly corelated to {k}')
       
df1 is strongly corelated to df2
df1 is not strongly corelated to df3
df1 is not strongly corelated to df4
df1 is strongly corelated to df5