内河无人驾驶船舶航行安全状况指标体系研究

为合理构建内河无人驾驶船舶航行安全状况指标体系,首先根据指标选取原则收集反映内河无人驾驶船舶航行安全状况的特征指标;然后运用熵理论和改进相关系数法按重要度和全局相关性筛选指标,剔除有效信息含量少和信息重叠度高的指标;最后基于熵理论提出指标体系整体辨识度概念,检验指标体系的合理性。结果表明:该体系不仅综合考虑了影响内河无人船航行安全状况的各个因素,而且提升了指标筛选效率;得到的指标体系整体辨识度大于0. 8,说明建立的指标体系能够很好地反映内河无人驾驶船舶的安全状况特征。

Research on index system for inland unmanned ships navigation safety status

In order to construct the indicator system for inland unmanned ships navigation safety scientifically,the characteristic indicators reflecting the safety status of inland unmanned ships were collected according to the principle of selection of indicators. Then the entropy theory and the improved correlation coefficient method were used to screen indicators based on the importance and global correlation,and to eliminate indicators with less effective information and high information overlap. Finally,the concept of overall identification of the index system was proposed based on the entropy theory to verify the rationality of the established index system. The results show that the above research idea can comprehensively consider the various factors influencing inland unmanned ship navigation safety and improve efficiency of indicator screening,and that the value of indicator system overall identification is greater than 0. 8,which indicates that the established indicator system is good.