tau-argus and supercross a practical example using the uk business register unit data
DESCRIPTION
Tau-Argus and SuperCROSS A practical example using the UK Business Register Unit data. Andrea Staggemeier Philip Lowthian Grant Lee. Agenda. Business Problem Tau Argus / SuperCROSS Detail of Solution Tau-Argus in Batch Mode SuperCROSS and Tau-Argus Integration - PowerPoint PPT PresentationTRANSCRIPT
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Tau-Argus and SuperCROSSA practical example using the UK Business Register Unit data
Andrea StaggemeierPhilip Lowthian
Grant Lee
Slide 2
Agenda
• Business Problem• Tau Argus / SuperCROSS• Detail of Solution• Tau-Argus in Batch Mode• SuperCROSS and Tau-Argus Integration• Controlled Rounding Example• Business Benefits• Issues• Conclusion• Further Information
Slide 3
Business Problem
• Manual process• Time consuming• High risk of human error• Therefore higher risk of disclosure• Risk reduced by exhaustive manual checks
Slide 4
Tau-Argus
• Software tool enabling Statistical Disclosure Control (SDC)
• Interactive or Batch mode• Safety rules (threshold and dominance)• Controlled Rounding• Suppression• History of Tau-Argus• Currently used by BRU within ONS, and other data
suppliers to Neighbourhood Statistics
Slide 5
SuperCROSS
• Part of SuperSTAR suite from Space-Time Research1 (Melbourne, Australia)
• Desktop tabulation tool• Easy-to-use drag and drop interface• Used by BRU, Labour Force Survey, and Census
within ONS• Used by many other statistical offices around the
world.
• 1 www.spacetimeresearch.com
Slide 6
Solution
SuperCROSSTable created by
end user
Tau-Argus
Protected TableData File
Results read backinto SuperCROSS
SuperCROSS creates files forTau-Argus batch process automatically
Tau-Argus outputstable after SDC applied
User chooses ruleto apply to table
SuperCROSS invokesTau-Argus batch mode
Table Data
Table Metadata
Batch Program
Slide 7
Tau-Argus in Batch Mode
• GUI or batch interface• Batch file contains parameters and pointers to
data/metadata files
Slide 8
Integration with SuperCROSS
• Users have familiar tabulation environment• Select desired rule from drop-down list (rules set
up by in-house experts)• Rule applied to table, and results presented to user
in SuperCROSS
Slide 9
Controlled Rounding Example
Slide 10
Business Benefits
• Tau-Argus is powerful disclosure control tool• Users do not need to understand SDC or how rules
are implemented• SDC process is automated, significantly reduces
manual effort• Reduces risk of human error and possible
disclosure• Easily adapted to other business areas
Slide 11
Some Issues
• Table Design– SuperCROSS allows complete flexibility– Doesn’t always make sense for Tau-Argus– Missing totals are a key concern
• Table size– Solving time
Administration Requirements
Slide 12
Conclusion
• Increase in efficiency• Decrease in risk of disclosure• Minimal training for users• Be wary of table design limitations
Slide 13
Further Information
For further information, please contact:
or
or
Slide 14
Questions
?