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United Nations Commission and Economic Commission for Europe Conference of European Statisticians April 21-23, 2008. United States Department of Agriculture National Agricultural Statistics Service. A presentation by Dale Atkinson and Jeff Beranek for: UNECE, Vienna, Austria. Slide 1.

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United Nations Commission and Economic Commission for EuropeConference of European StatisticiansApril 21-23, 2008

United States Department of Agriculture

National Agricultural Statistics Service

A presentation by Dale Atkinson and Jeff Beranek for:

UNECE, Vienna, Austria

Slide 1


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Topic (vi) : Censuses.Further Improvements to an Edit and Imputation System for the 2007 United States Census of Agriculture

United States Department of Agriculture

National Agricultural Statistics Service

A presentation by Dale Atkinson and Jeff Beranek for:

UNECE, Vienna, Austria

Slide 2


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Slide 3

  • United States Census of Agriculture2007:

  • Scope and Background

  • Shortcomings of 2002 Census

  • Improvements to 2007 Census

  • Planning for 2012


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Slide 4

  • Scope and Background

  • Quinquennial census of all US farms

  • Responsibility of BOC through 1997; USDA/NASS since 1997

  • NASS implemented sweeping changes in 2002

  • Shortcomings in 2002 Census addressed for 2007 effort


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Slide 5

  • Shortcomings of 2002

  • Scanning for data capture (OCR)

  • Database model

  • Slow speed/small edit batch size (75 records)

  • Imputation/Donor pool creation and maintenance

  • No quality control/quality assurance utilities

  • Lack of testing


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Slide 6

  • Responses to 2002 Shortcomings

  • Scanning for data capture (OCR) introduced much erroneous data.

  • Key From Image (KFI) and Optical Mark Recognition (OMR).


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Slide 6

  • Responses to 2002 Shortcomings

  • Database model

  • Roles of databases optimally redefined.


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Slide 6

  • Responses to 2002 Shortcomings

  • Slow speed/small edit batch size (75 records)

  • Faster edit (5-10 seconds/record), larger batch size (1000 records).


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Slide 6

  • Responses to 2002 Shortcomings

  • Imputation/Donor pool creation and maintenance

  • Improved donor pool design and deeper seed pool.


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Slide 6

  • Responses to 2002 Shortcomings

  • No quality control/quality assurance utilities

  • Designed, tested and implemented QC/QA utilities.


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Slide 6

  • Responses to 2002 Shortcomings

  • Lack of testing

  • Aggressive, early testing of components and entire system.


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Slide 7

  • Areas of Research for 2012

  • Data transfer between databases.

  • Donor imputation and donor pool seeding/weighting of donor records.

  • Editing of demographic and economic data.

  • Shortcomings of 2007 form(s).

  • Further implementation of selective editing.


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