The Census GSS Initiative: Expanded Partnerships Leading to Improved Data Quality

1. The Census GSS Initiative: Expanded Partnerships Leading to Improved Data Quality Kevin Holmes Geographer US Census Bureau 2014 Ohio GIS Conference September 22 - 24, 2014 | Hyatt Regency Columbus| Columbus, Ohio

2. The MAF/TIGER Database (MTDB) • Master Address File (MAF) • Topologically Integrated Geographic Encoding and Referencing (TIGER) • Developed to support 1990 Census • Digitized from USGS quads

3. Supporting Current/Future Censuses & Surveys • http://www.census.gov/geo/www/gss/ • Geographic Support System Initiative (GSS-I) • Integrated program utilizing partnerships for: • Improved address coverage • Continual spatial feature updates • Enhanced quality assessment & measurement (QI) • May allow for a targeted address canvassing operation in 2019 (cost avoidance) • Better quality throughout the decade to support intercensal surveys (American Community Survey)

4. GSS-I Partnership Progress

5. 2014 GSS-I Partnership Progress • Partner file acquisition, evaluation, and MAF/TIGER update continues • Feedback development & disbursement • Conflation development • Developed qualitative change detection methodology • Further Community TIGER development • Refined QIs • Refined statistical models • Address Canvassing Recommendation

6. GSS-I Partner Data Acquisition * Some counties provided multiple partial-coverage street centerline datasets (i.e., cities vs. balance of county) ** Includes feature and address files processed through the MAF/TIGER system update process

8. OGRIP LBRS Datasets Address Points and Road Centerlines

9. US Census Bureau Philadelphia Regional Office Territory

10. Minimum Address Guidelines: Address Matching • In order to perform a match to existing MAF addresses, the submitted record must include:   • Complete Address Number • Complete Street Name andAT LEAST ONE OF THE FOLLOWING: • Address Coordinate • ZIP Code • Postal City and State • Census 2010 Tabulation State, County, Tract and Block Code

11. Minimum Address Guidelines: Address Geocoding/Adding B. In order to update the location (geocode) for an existing MAF address, the submitted record must meet the requirements of “A” above, and either: • Address Coordinate or • Census 2010 Tabulation State, County, Tract and Block Code C. In order to ADD new records to the MAF, the submitted record must meet the requirements of “A” and “B” above, and must include an Address Feature Type indicator identifying the address as residential, commercial, utility, etc.

12. Minimum Address Guidelines: Etc. D. Within Structure Identifiers (Apt 3, etc). If not available: • # of units • Multi-unit structure flag E. Group Quarters: • NAME (i.e. Shady Acres Retirement Home) • TYPE (i.e. Hospital, Prison, College Dormitory) F.Cannot process onlyNon-City-Style Addresses, such as: • Rural Route Addresses (i.e. RR 3 Box 725 Anytown, NC 28999) • Post Office Box Addresses (i.e. P.O. Box 12374 Anytown, NC 28999) • General Delivery (i.e. General Delivery Anytown, NC 28999) • Location Descriptions (i.e. Brick House at intersection of 1st and Main Streets)

13. Partner File Processing Overview

14. Of 42,111,361 Partner Addresses… (1,675,765) (40,435,596)

15. Of 40,435,596 UnduplicatedPartner Addresses… (34,884,631) (1,675,765)

16. Of 34,884,631 MatchedPartner Addresses… (32,589,844) (15,685,628) (1,782,125) (681,243) (492, 573) (18,517,760)

17. Of5,550,965 UnmatchedPartner Addresses… (1,320,507) (4,230,458)

18. Street Centerline Updates - 2x Earth’s Circumference! • 13,601 Miles of new roads added • 40,385 Miles of updated roads • 53,986 total miles of feature updates

19. GSS-I Feedback • After processing completes, GSS-I partner receives: • “Thank You” letter • Detailed Feedback Report • GSS-I Summary Address Report • RO and WAH geographers in the initial review of the GSS-I feedback products • Total partners provided feedback to date: • Addresses: 139 (15%) • Centerlines: 91 (14%)

20. GSS-I Address Feedback: Reports

21. GSS-I Feature Feedback: Shapefiles Adding a date of last update field to partnership shapefiles:

22. What’s Next?

23. Community TIGER Proof of Concept collaborative project with ESRI Web (cloud) based data exchange and data management portal Phased and iterative project Leverages COTS technology, existing systems and proven workflows Utilizes and builds upon the next generation ESRI Community Maps Local govt. GSS-I Phase 2 beta testers

24. CommunityTIGER Crosswalk Overlay Analyze Feedback

25. Address Data Migration

26. Spatial Matching with TIGER

27. Spatial Data Reviewer

28. Contribution Feedback

29. Geographic Products TIGER/Line Shapefiles Full detail, extensive attributes, current vintages NEW 8/19/14 Full detail, limited attributes, current vintages TIGER Geodatabases TIGER/Line Shapefiles & Geodatabases w/ Demographic Data Full detail, limited attributes, limited vintages Cartographic Boundary Files Generalized detail, limited attributes, limited vintages KML Prototype Files Generalized detail, limited attributes, limited vintages TIGERWEB– WMS & REST map services Detailed, extensive attributes, current vintages

30. Geocoding Service Single Input, Batch, REST, API

31. Other Data/Mapping Resources - Census Explorer - Foreign Born by County, Nation High School Graduates (or more) by tract, Philadelphia, PA http://www.census.gov/censusexplorer/ ACS 5-Year Decennial

32. Other Data/Mapping Resources - LEHD OnTheMap - http://lehd.did.census.gov/

33. 2014 Ohio GIS Conference September 22 - 24, 2014 | Hyatt Regency Columbus| Columbus, Ohio Thank You http://www.census.gov/geo/www/gss/ kevin.j.holmes@census.gov 215.717.1830