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- W629644966 abstract "The data quality of archived detector data system is critical for its value for operations, planning, and research purposes. Data quality problems arise from a variety of sources, including data loss or noise caused by network connectivity, detector deficiencies, and configuration errors. Considering the size of the archived data, it is time-consuming for users to identify a series of sound data for research purposes. This paper proposes a tool to help find sound data, and to help identify the problems. The proposed tool examines the data as per a series of predefined quality criteria to flag the imperfect data records, the summary of which are then presented to the user. Once flagged, the data quality information is presented as a percentage of good data by aggregation of time (day and month) and geography (state, region, county, and controller/ detector). The report interface can present the data quality information as: 1) calendar, which gives the information for every day with a specified location and criterion, and 2) tables (time by criteria, location by criteria, time by location, and location by time), which allows users to fix one of the three variables, and examines the other two. As an enhancement to the WisTransPortal V-SPOC (Volume, Speed, and Occupancy) application, which serves as a critical source of Wisconsin traffic data, the report interface of the examination tool makes it very easy to capture a problematic record, because of its distinguishable color, and then identify the details of the problematic days and detectors." @default.
- W629644966 created "2016-06-24" @default.
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- W629644966 date "2014-01-01" @default.
- W629644966 modified "2023-09-23" @default.
- W629644966 title "A Comprehensive Traffic Data Quality Examination Tool - WisTransPortal V-SPOC QAQC Enhancement" @default.
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