比较4种基于斜率的灰色关联度模型,分析其优势与局限.以船舶碰撞事故中人为失误统计数据为例,应用斜率关联度与灰色斜率相似关联度模型进行计算,并将计算结果与邓氏关联度求取的结果进行比对.研究表明,斜率关联度及灰色斜率相似关联度模型不受因素序列值影响,也不受两序列间时序变化的特殊性影响;该两种模型应用于海事研究领域是可行、有效的. Four kinds of gray relational degree models based on slope are compared to analyze their advantages and limitations. Taking the statistical data of human error in ship collision as an example, the slope correlation degree and gray slope similarity correlation degree model are used to calculate, The results show that the slope correlation and the gray slope similarity correlation model are not affected by the factor sequence value and are not affected by the particularity of the timing variation between the two sequences.These two models are applied to the maritime Research areas are feasible and effective.