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    • 27. 发明专利
    • Traffic information system
    • 交通信息系统
    • JP2008123145A
    • 2008-05-29
    • JP2006304689
    • 2006-11-10
    • Hitachi Ltd株式会社日立製作所
    • HIRUTA TOMOAKIKUMAGAI MASATOSHITANIKOSHI KOICHIRO
    • G08G1/01
    • G08G1/0104
    • PROBLEM TO BE SOLVED: To complement data on traffic information of a road link having no present state data with high accuracy by use of data on a road link having present probe traffic information even when a small number of the road links collect the present probe traffic information. SOLUTION: Principal component analysis is applied to probe traffic information collected in the past in each area, and a base showing high correlation of the road link wherein the present probe traffic information is collected is selected from a base related to the traffic information calculated for a link group in the area. Composite strength of each the base related to the present probe traffic information is calculated from the selected base for the link group by projection. By linearly composing the respective bases with the calculated composite strength as a coefficient, estimated traffic information in the link group is calculated, and the calculated estimated traffic information is set as complementary information with respect to the link having no present probe traffic information. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使当少数道路连线收集有问题时,通过使用具有当前探测交通信息的道路链路上的数据来高精度地补充没有当前状态数据的道路链路的交通信息的数据 目前探测流量信息。 解决方案:将主成分分析应用于在每个区域中探测过去收集的交通信息,并且从与交通信息相关的基础中选择其中收集当前探测交通信息的道路链路的高相关性的基数 为该区域中的链路组计算。 通过投影从针对链路组的所选基站计算与当前探测业务信息相关的每个基站的复合强度。 通过以计算出的组合强度线性地构成各个基准作为系数,计算链路组中的估计的交通信息,并将计算出的估计交通信息设定为相对于没有当前探测交通信息的链路的补充信息。 版权所有(C)2008,JPO&INPIT