JSM 2004 - Toronto

Abstract #300962

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Activity Number: 401
Type: Topic Contributed
Date/Time: Thursday, August 12, 2004 : 8:30 AM to 10:20 AM
Sponsor: Section on Survey Research Methods
Abstract - #300962
Title: Automated Production of Foreign Trade Data Edit Parameters Using Resistant Fences
Author(s): Ryan M. Fescina*+
Companies: U.S. Census Bureau
Address: , Washington, DC, 20233-0001,
Keywords: outlier detection ; resistant fences ; data editing ; economic data
Abstract:

The Foreign Trade Division (FTD) of the U.S. Census Bureau is responsible for publishing the official international trade statistics for the United States. This includes data for both imports and exports. Each month, FTD collects and edits approximately 3.4 million import and 1.8 million export records, covering nearly 17,000 import and 10,000 export commodities. These records pass through many edits using multiple sets of parameters. Due to resource constraints and the potential for an increase in the number of parameters, we are investigating ways to automatically create tolerances based on a Symmetrized Resistant Fences method. This paper presents our findings on the implementation of Symmetrized Resistant Fences applied to foreign trade ratio parameters, and the use of historical data to flag questionable parameters or automatically update the parameters as needed.

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