目标变量在训练集上的 8 个实际值 [0,0,0,1,1,1,1,1]，目标变量的熵是多少？( )
-(5/8 log(5/8) + 3/8 log(3/8))
5/8 log(5/8) + 3/8 log(3/8)
3/8 log(5/8) + 5/8 log(3/8)
5/8 log(3/8) – 3/8 log(5/8)
青云测评
青云测评
目标变量在训练集上的 8 个实际值 [0,0,0,1,1,1,1,1]，目标变量的熵是多少？( )
-(5/8 log(5/8) + 3/8 log(3/8))
5/8 log(5/8) + 3/8 log(3/8)
3/8 log(5/8) + 5/8 log(3/8)
5/8 log(3/8) – 3/8 log(5/8)
