Multilevel Association Rule Mining for Bridge Resource Management Based on Immune Genetic Algorithm

Table 6

Association rules and the meaning of them based on BRM.

Association rule with support and confidence	Meaning based on BRM
𝑐𝑥1=11⇒𝑐𝑥7=10  [supp = 65.2%, conf = 88.1%]	The worst team work abilities and working attitude lead to the serious accident
𝑐𝑥4=11⇒𝑐𝑥7=11  [supp = 69.3%, conf = 89.0%]	The worst pressure and fatigue lead to the worst accident
𝑐𝑥5=10⇒𝑐𝑥7=01  [supp = 55.8%, conf = 86.3%]	The bad situational awareness and ability of risk assessment lead to the general accident
𝑐𝑥1=11∩𝑐𝑥5=10⇒𝑐𝑥7=11  [supp = 32.6%, conf = 82.1%]	The worst team work abilities and attitude added to bad situational awareness and ability of risk assessment lead to the worst accident
𝑐𝑥3=10∩𝑐𝑥4=10⇒𝑐𝑥7=10  [supp = 21.8%, conf = 85.4%]	The bad pressure and fatigue added to bad decision-making capacity lead to the serious accident
𝑐𝑥2=10∩𝑐𝑥6=01⇒𝑐𝑥7=01  [supp = 25.2%, conf = 81.9%]	The bad abilities of communication and poor educational background lead to the general accident
𝑐𝑥4=11∩𝑐𝑥5=10⇒𝑐𝑥7=10  [supp = 33.6%, conf = 81.9%]	The worst pressure and fatigue added to situational awareness and ability of risk assessment lead to the serious accident