306 lines
2.4 KiB
Plaintext
306 lines
2.4 KiB
Plaintext
根据你提供的公式和参数,我们可以逐步计算预测概率
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P
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P。
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公式为:
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P
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=
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exp
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(
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−
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5.908
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+
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0.008
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×
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IGF-1
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+
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2.146
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×
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LH
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+
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0.286
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×
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子宫厚度
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)
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1
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+
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exp
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(
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−
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5.908
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+
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0.008
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×
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IGF-1
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+
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2.146
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×
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LH
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+
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0.286
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×
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子宫厚度
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)
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P=
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1+exp(−5.908+0.008×IGF-1+2.146×LH+0.286×子宫厚度)
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exp(−5.908+0.008×IGF-1+2.146×LH+0.286×子宫厚度)
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代入给定的参数:
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IGF-1 = 334 ng/ml
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LH = 0.6 mIU/ml
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子宫厚度 = 11 mm
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首先计算指数部分:
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−
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5.908
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+
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0.008
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×
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334
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+
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2.146
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×
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0.6
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+
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0.286
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×
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11
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−5.908+0.008×334+2.146×0.6+0.286×11
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逐步计算:
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0.008
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×
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334
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=
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2.672
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0.008×334=2.672
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2.146
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×
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0.6
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=
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1.2876
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2.146×0.6=1.2876
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0.286
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×
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11
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=
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3.146
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0.286×11=3.146
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将这些值相加:
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−
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5.908
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+
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2.672
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+
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1.2876
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+
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3.146
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=
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1.1976
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−5.908+2.672+1.2876+3.146=1.1976
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接下来计算指数函数:
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exp
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(
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1.1976
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)
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≈
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3.312
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exp(1.1976)≈3.312
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然后计算概率
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P
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P:
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P
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=
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3.312
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1
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+
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3.312
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=
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3.312
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4.312
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≈
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0.767
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P=
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1+3.312
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3.312
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=
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4.312
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3.312
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≈0.767
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因此,预测概率
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P
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P 为 0.767,与你的结果一致。
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根据上面公司,请重新给几组测试数据
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以下是几组测试数据,你可以根据提供的公式计算预测概率
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P
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P:
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测试数据 1
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IGF-1: 250 ng/ml
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LH: 0.8 mIU/ml
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子宫厚度: 10 mm
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测试数据 2
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IGF-1: 400 ng/ml
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LH: 1.2 mIU/ml
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子宫厚度: 12 mm
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测试数据 3
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IGF-1: 300 ng/ml
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LH: 0.5 mIU/ml
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子宫厚度: 9 mm
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测试数据 4
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IGF-1: 350 ng/ml
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LH: 1.0 mIU/ml
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子宫厚度: 11 mm
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测试数据 5
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IGF-1: 280 ng/ml
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LH: 0.7 mIU/ml
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子宫厚度: 8 mm
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计算示例(以测试数据 1 为例)
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公式:
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P
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=
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exp
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(
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−
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5.908
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+
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0.008
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×
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IGF-1
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+
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2.146
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×
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LH
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+
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0.286
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×
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子宫厚度
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)
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1
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+
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exp
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(
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−
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5.908
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+
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0.008
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×
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IGF-1
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+
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2.146
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×
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LH
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+
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0.286
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×
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子宫厚度
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)
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P=
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1+exp(−5.908+0.008×IGF-1+2.146×LH+0.286×子宫厚度)
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exp(−5.908+0.008×IGF-1+2.146×LH+0.286×子宫厚度)
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代入测试数据 1:
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−
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5.908
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+
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0.008
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×
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250
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+
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2.146
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×
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0.8
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+
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0.286
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×
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10
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−5.908+0.008×250+2.146×0.8+0.286×10
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=
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−
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5.908
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+
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2.0
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+
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1.7168
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+
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2.86
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=−5.908+2.0+1.7168+2.86
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=
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0.6688
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=0.6688
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计算指数函数:
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exp
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(
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0.6688
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)
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≈
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1.952
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exp(0.6688)≈1.952
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计算概率
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P
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P:
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P
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=
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1.952
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1
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+
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1.952
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=
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1.952
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2.952
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≈
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0.661
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P=
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1+1.952
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1.952
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=
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2.952
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1.952
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≈0.661
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因此,测试数据 1 的预测概率
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P
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P 约为 0.661。
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你可以用同样的方法计算其他测试数据的
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P
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P 值。如果需要进一步帮助,请告诉我! |