5 设有如下一组推理规则: r 1 : IF E THEN E 2 (0.6) r 2 : IF E 2 AND E 3 THEN E 4 (0.7) r 3 : IF E 4 THEN H (0.8) r 4 :IF E 5 THEN H (0.9) 已知 CF (E 1 ) =0.5,CF (E 3 ) =0.6,CF (E 5 ) =0.7, 求 CF (H) 。 3.6 请说明主观 Bayes 方法中 LS 与 LN 的含义及它们之间的关系。 3.7 设有如下推理规则 r 1 : IF E 1 THEN (2,0.00001) H 1 r 2 : IF E 2 THEN (100,0.0001) H 1 r 3 : IF E 3 THEN (200,0.001) H 2 r 4 : IF H 1 THEN (50,0.1) H 2 且已知 P (E 1 ) =P (E 2 ) =P (E 3 ) =0.6, P (H 1 ) =0.091,P (H 2 ) =0.010, 又由用户告知: P (E 1 |S 1 ) =0.84,P (E 2 |S 2 ) =0.68,P (E 3 |S 3 ) =0.36 请用主观 Bayes 方法求 P (H 2 |S 1 ,S 2 ,S 3 ) . 3.8 设有如下推理规则 r 1 : IF E 1 THEN (100,0.1) H 1 r 2 : IF E 2 THEN (50,0.5) H 2 r 3 : IF E 3 THEN (5,0.05) H 3 且已知 P (H 1 ) =0.02,P (H 2 ) =0.2,P (H 3 ) =0.4, 请计算当证据 E 1 ,E 2 ,E 3 存在或不存在时, P (H i |¬E i ) 或 P (H i |E i ) 的值各是多少( i=1,2,3) ? 3.9 请说明证据理论中概率分配函数、信任函数、似然函数及类概率函数的含义。