基于熵权-区间逼近的高速公路路段安全评价

Safety Evaluation of Expressway Based on Entropy Weight-Interval Approximation Method

针对高速公路安全性评估方法采用实测数据点作为样本数据的现状,以及权重确定的主观性问题,引进区间数理论对高速公路路段安全性指标实测数据进行了区间估计,并运用熵权理论确定各指标权系数,建立了区间数逼近评估模型对高速公路路段安全性进行综合评估。基于熵权-区间逼近评估模型既保证了数据采集的连续性,也保证了权重确定的客观性。实例分析表明,运用基于熵权的区间数逼近算法能够对不同路段的安全性进行整体评估。

Aiming at the deficiency of existing expressway safety evaluation about sample data se lected from field measurement data and the influence of subjective factors on the weight coefficient effectively introduce interval mathematical theory in expressway road safety interval estimation index measured data. Using entropy theory to determine the index weight and establishing the interval number approxi- mate evaluation model to assess the safety of expressway safety comprehensively. The evaluation method based on entropy weight-interval approximation which not only ensures the continuity of data acquisition but also assures the objectivity of weight decision. The example analysis shows that the method has the better way for the safety of the different sections of the overall evaluation.