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A new algorithm for matching Chinese NBS firm-level with customs data

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  • Peter Egger
  • Susie Xi Rao
  • Sebastiano Papini

Abstract

Combining accounting-type firm data and transactions-type customs data has become increasingly important for research in international and industrial economics. The statistical authorities in several countries such as the United States or France provide such linked data without details on sources, and researchers have to assume that the matching is correct and the firm identifiers are unique and flawless in the source data. For some other countries such as Switzerland or China, firm and customs data contain information which permits such linking ex post using string matching based on firm names and their meta-information like addresses. Due to spelling and typos, such matching is prone to some errors. Obtaining the largest-possible number of high-quality matches helps avoid potential biases while keeping crucial details. We report on a new algorithm which improves considerably the hitherto available linking efforts of the National Bureau of Statistics firm-level and the Customs trade data for China.

Suggested Citation

  • Peter Egger & Susie Xi Rao & Sebastiano Papini, 2021. "A new algorithm for matching Chinese NBS firm-level with customs data," China Economic Journal, Taylor & Francis Journals, vol. 14(3), pages 311-335, September.
    • Handle: RePEc:taf:rcejxx:v:14:y:2021:i:3:p:311-335
    DOI: 10.1080/17538963.2021.1963046
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