Processing math: 100%
基于SMA算法优化随机森林的PPV预测模型
邓红卫,罗亮
PPV Prediction Model Based on Random Forest Optimized by SMA Algorithm
Hongwei DENG,Liang LUO
表6
6组国内外常用经验公式
Table 6
Six groups of common empirical formulas at home and abroad
经验方法
公式
Amb-Hend
P
P
V
=
K
[
r
/
(
Q
m
a
x
)
1
/
3
]
-
B
CMRI
P
P
V
=
n
+
K
[
r
/
(
Q
m
a
x
)
1
/
2
]
-
1
General
P
P
V
=
K
(
Q
m
a
x
)
A
r
-
B
Indian Standard
P
P
V
=
K
[
r
/
(
Q
m
a
x
)
2
/
3
]
B
Lang-Kihl
P
P
V
=
K
[
(
Q
m
a
x
/
r
3
/
4
)
]
B
USBM
P
P
V
=
K
[
r
/
(
Q
m
a
x
)
1
/
2
]
-
B