In a database, a rule is defined as (P1 and P2) or P3? R1 (0.8) and R2 (0.3), where P1, P2, P3 are premises and R1. R2 are conclusions of rules with certainty factors (CF) 0.8 and 0.3 respectively. If any running program has produced P1, P2, P3 with CF as 0.5, 0.8. 0.2 respectively, find the CF of results on the basis of premises.
1
CF (R1 = 0.8), CF (R2 = 0.3)
2
CF (R1 = 0.40), CF (R2 = 0.15)
3
CF (R1 = 0.15), CF (R2 = 0.35)
4
CF (R1 = 0.8), CF (R2 = 0.35)