已知如下一组规则:r1:ifE3andE4orE5thenE1(0.8)r2:if E1 then H(0.6) r3:if E2 then H (0.7) r4:if E6 then H(0.8)已知CF(E3)=0.9,CF(E4)=0.8,CF(E5)=0.6,CF(E2)=0.6CF(E6)=0.4。用确定性理论求:CF(H)=?
时间: 2023-08-16 20:05:05 浏览: 175
根据确定性理论,先计算出每个规则的置信度(CF):
CF(r1) = min(CF(E3), CF(E4), CF(E5)) = min(0.9, 0.8, 0.6) = 0.6
CF(r2) = CF(E1) = 0.8 (由于r1的置信度为0.6,小于0.8,因此不考虑r1)
CF(r3) = CF(E2) = 0.6
CF(r4) = CF(E6) = 0.4
然后根据公式 CF(H) = max(CF(r) x q(r,H)),计算出 CF(H):
CF(H) = max(0.8 x 0.6, 0.6 x 0.7, 0.4 x 0.8) = 0.48
因此,CF(H) = 0.48。
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