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The Census GSS Initiative: Expanded Partnerships Leading to Improved Data Quality Kevin Holmes Geographer US Census Bureau 2014 Ohio GIS Conference September.

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Presentation on theme: "The Census GSS Initiative: Expanded Partnerships Leading to Improved Data Quality Kevin Holmes Geographer US Census Bureau 2014 Ohio GIS Conference September."— Presentation transcript:

1 The Census GSS Initiative: Expanded Partnerships Leading to Improved Data Quality Kevin Holmes Geographer US Census Bureau 2014 Ohio GIS Conference September , 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  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 Program Definition Formation of GSS-I Working Groups 2012 Working Group recommendations Established Integrated Project Teams (IPT) 1st Address Summit Developed system for acquiring, tracking, and evaluating partner files Began QI development 2013 Partner file acquisition, evaluation, and MAF/TIGER update begins Began Community TIGER development Second Address Summit Statistical model development begins

5 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 6 Partnership Coverage (cumulative)# Number of partners contacted (so far…)468 Number of partners (not entities) that provided files305 Number of partners that could not provide files because of use agreement or fee restriction 14 Governments represented7,864 Census Tracts covered28,500 Population covered*117,228,778 Housing units covered*49,028,579 * Population and Housing calculated using 2010 Census Block Counts Data as of May 5, 2014 Partners Contacted Partners Providing Files Address List Acquired Structure Coordinates Acquired Street Centerlines Acquired Partner Files Processed TOTAL *996** * 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

7 7

8 8 OGRIP LBRS Datasets Address Points and Road Centerlines

9 9 US Census Bureau Philadelphia Regional Office Territory

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

11 11 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. Minimum Address Guidelines: Address Geocoding/Adding

12 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 only Non-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 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 13 Partner File Processing Overview Partner File Processing Overview

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

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

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

17 17 Of 5,550,965 Unmatched Partner Addresses… (1,320,507) (4,230,458)

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

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%) 19

20 GSS-I Address Feedback: Reports Figure 1. Detailed Feedback Report Sample for Florence Co South Carolina (A) State (B) County (C) Tract (D) Block (E) GEOID (F) Total Addresses (G) Total Residential (H) Total Nonresidential (I) Total Other (J) Total Matched (K) Total Added (L) Total Coordinate s Added (M) Total Not Accepted (N) Total Not Accepted Duplicate (O) Total Not Accepted Incomplete (P) Total Not Accepted Other (Q) Total Currently in MAF Figure 2. Summary Address Report Sample for Florence Co South Carolina ColumnAddress Data Submitted to the Census BureauTotal F Total Addresses 64,929 G Total Residential Addresses 51,852 H Total Nonresidential Addresses 277 I Total Other 12,800 Address Actions taken by the Census Bureau J Total Matched 51,002 K Total Added 24 L Total Coordinates Added 44,953 M Total Not Accepted 13,866 N Total Not Accepted Duplicate 1,389 O Total Not Accepted Incomplete 537 P Total Not Accepted Other 11,940 Q Total Currently in MAF 61,500

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

22 What’s Next? Continue partner file acquisition and MAF/TIGER update using partner data Automated partner feedback Enhance conflation processes Enhance change detection methodologies Integrate Community TIGER into MAF/TIGER update Communicate address canvassing recommendation Research on data improvements for Puerto Rico and Group Quarters Transaction based partner file acquisition and evaluation environment

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 23

24 Crosswalk Analyze Overlay Feedback Community TIGER

25 Address Data Migration

26 Spatial Matching with TIGER 26

27 Spatial Data Reviewer 27

28 Contribution Feedback

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

30 Geocoding Service Single Input, Batch, REST, API

31  ACS 5-Year  Decennial High School Graduates (or more) by tract, Philadelphia, PA Foreign Born by County, Nation Other Data/Mapping Resources - Census Explorer - - Census Explorer -

32 Other Data/Mapping Resources - LEHD OnTheMap -

33 Thank You Ohio GIS Conference September , 2014 | Hyatt Regency Columbus| Columbus, Ohio


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