线性高斯分布:
P(c | h, subsidy) = N(ath + bt, t2)(c)
= 1/ (t21/2) e –1/2{[c-(ath + bt)]/t]}
P(c | h, ~subsidy) = N(afh + bf, f2)(c)
= 1/ (f21/2) e –1/2{[c-(afh + bf)]/t]}
S型函数(Sigmoid function)
p(buys | Cost = c) = 1 / {1 + exp[-2(-u+)/ ]}
2021-11-21 16:56:17
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贝叶斯
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