Data Quality

Validation

An important part of data validation is the Utah Broadband Outreach Center’s data intake and processing flow. In summary, our data flow consists of:

  • Initial evaluation of data submission and initial documentation.
    • Recording what was submitted by provider.
    • Verification that the data update is usable.
  • Data Processing.
    • Update provider data in a Center defined standard data format.
  • Detailed evaluation and documentation.
    • Document details of the data and the data processing steps.
    • Review the provider’s changes from previous submissions for consistency between what is in the data and what discussions have been made with providers.
  • Create data feedback for provider to review.

Aerial photography, address location services, census block geometry, and road segment geometry used for broadband service mapping and for quality control of the broadband data are from public domain resources in the SGID.

Verification

All Broadband data received by the Center is reviewed for overall verification. Besides our initial verification, other sample verification methods are listed below.

  • The Center maintains archives and documentation of a given provider’s data over time, and changes are noted and verified as to their plausibility. All data related interaction with a provider since the mapping database was created in June 2010 is also documented. This provider submission history is periodically referred to in order to guide correspondence needs and special handling of the submission data.
  • For each provider’s geographical extent, examination of areas that are not served or are underserved is completed and discussed with the provider for accuracy.
  • Every time the project receives updates from a broadband provider, data feedback is sent to the provider for them to verify that the data or updates have been prepared accurately. The biggest source of feedback for providers is being able to interact one on one with their specific data on the Utah Broadband Interactive Map. Providers can do this on their own or with the Center’s mapping team during a scheduled conference.
  • Local telecom territories are used to verify reported DSL coverage areas.