基于粗糙集-云模型的城市常规公交运力配置水平评价

Evaluation of Urban Conventional Bus Capacity Allocation Level Based on Rough Set Cloud Model

为优化完善城市常规公交运力配置的多层次综合评估指标体系及其等级标准,以便科学评估常规公交运力配置水平,提出了一种基于粗糙集-云模型的城市常规公交运力配置水平评估模型。首先,利用粗糙集理论对指标体系进行筛选,并匹配了相应的等级标准;然后,采用CRITIC方法对指标进行赋权,进而利用云模型算法生成评价标准云和结果云,通过数字特征和云图直观展现评价结果。最后,以青岛市主城区144条常规公交线路为例,对模型进行了验证。结果显示:青岛市主城区144条常规公交运力配置水平目标层综合评价等级为“中等”,在子目标层(公交客流水平、公交线路水平、公交线路发车水平、公交车辆运营水平、公交车辆技术水平)中,评价等级为“中等”及以上的占60%,总体上与目前青岛市主城区常规公交运力配置水平特点相符。研究表明,该模型能实现对城市常规公交运力配置的综合评价,可为城市常规公交运力配置评价体系和评价模型构建提供参考。

In order to optimize and improve the multi-level comprehensive evaluation index system and its level standards for the allocation of urban conventional bus capacity,and to scientifically evaluate the level of conventional bus capacity allocation,based on rough set cloud model,an evaluation model for the level of urban conventional bus capacity allocation was proposed.Firstly,based on rough set theory,the indicator system was screened and a corresponding level standard for the indicator system was matched.Then,the CRITIC(Criteria Importance Though Intercriteria Correlation)method was selected to weight the indicators,the algorithm of cloud model was used to generate evaluation criteria cloud and result cloud,and the evaluation results were visually displayed through the digital features and cloud images.Finally,the model was validated via using 144 conventional bus routes in the main urban area of Qingdao as an example.The results showed that the comprehensive evaluation level of the target layer of the capacity allocation of 144 conventional buses in the main urban area of Qingdao was"medium",and 60%of the sub target layers(bus passenger flow level,bus route level,bus route departure level,bus operation level,bus technology level)had a evaluation level of"medium"or above,which was in line with the current characteristics of the regular bus capacity allocation level in the main urban area of Qingdao on the whole.The research shows that this model can achieve a comprehensive evaluation of urban conventional bus capacity allocation,which can provide reference for the construction of evaluation systems and models for urban conventional bus capacity allocation.