Research On Control Technique Of Data Quality For Multi-source Traffic Data

Intelligent transportation overall framework mainly includes the perceived data,the integrated platform and application of analysis prediction and optimizationmanagement. Perceived data layer is mainly to acquire the traffic flow and traffic’sperception. Perceived data is the cornerstone of intelligent transportation overallframework. Traffic state information can be collected by magnetic frequency, wavefrequency; video and installation in the vehicle GPS mobile positioning equipmenttechnology such as acquisition, based on RFID technology and mobile signalingtechnology also play a supplementary role. Thus perception layer runs the basis of theaccumulation of a large number of data, such as there is missing, error data qualityproblems. If user has not been evaluated data and directly inferred the current trafficflow running state, it will inevitably cause a gap with the actual traffic state, may leadto road network more serious congestion.In view of the above phenomenon, based on past research of the current trafficinformation data quality on the basis of relevant research and application oftechnology, combined with the application of data quality requirements, first of all,from the perspective of the intelligent traffic data collection data analysis,construction of quality evaluation model for traffic data. Then, in this paper combinedwith the characteristics of multi-source detector run in parallel, this paper discusses anevaluation method of the quality of traffic data from multiple source accuracy,consistency, integrity, and instantaneity. It is put forward the interaction analysis ofheterogeneous information comprehensive method to evaluate information. Theresearch gave a clear evaluation process.It summarizes the existing dimensional control of data quality, data qualitycontrol technology in the time domain, relevant data quality control method wasproposed based on time and space, but also on the quality of the data control processdetailed process description is given. Adjacent sections based on the actual acquisitiontime, adjacent cross section and adjacent track detector source traffic data accordingto the study of evaluation and control method of verification, by the analysis resultshows that in this article build multi-source heterogeneous data quality evaluation set perception quality dimensions based on multi-source interactive evaluation methodand based on the spatial and temporal correlation of data quality control method fortraffic information sharing platform realization of multi-source multi-dimensioninformation awareness provides strong technical support.