延安市宝塔区土壤养分地球化学评价中的变权效果
王鹏, 刘拓
Variational weight effect in the geochemical evaluation of soil nutrients in Baota District of Yan'an City
Peng WANG, Tuo LIU
表1
常见的状态变权向量
Table 1
Common state variable vector
类别
均衡函数
状态变权向量
变权向量
常权
S
1
(
X
)=
S
2
(
X
)=…=
S
m
(
X
)
w
j
(
X
j
)=
w
j
积型
B
(
X
)
=
∏
j
=
1
m
x
j
α
(
α
∈
[
0,1
]
)
S
I
(
x
1
,
x
2
,
…
,
x
m
)
?
∏
i
=
1
,
i
≠
j
m
x
j
w
j
(
x
1
,
x
2
,
…
,
x
m
)
=
w
j
x
j
∑
j
=
1
m
w
j
x
j
和型
B
(
X
)
=
∑
j
=
1
m
x
j
α
(
α
∈
[
0,1
]
)
S
j
(
x
1
,
x
2
,…,
x
m
)=
x
j
α
w
j
(
X
)
=
w
j
x
j
α
-
1
/
∑
j
=
1
m
w
j
x
j
α
-
1
指数型
B
(
X
)=e
-
αx
(
α
≥0)
S
j
(
x
1
,
x
2
,…,
x
m
)=
e
-
α
(
x
j
-
n
)
w
j
(
X
j
)=
w
j
/
[
w
j
+(1-
w
j
)e
-
α
]