(String Matching Algorithms,An Applicatione ti ISAE and ISTAT Firms's Registers)
The aim of the paper is to develop algorithms for the matching of strings from two different registers of Italian enterprises. This makes effective the possibility of integrating the firm-level information collected by ISAE (Institute for Studies and Economic Analyses) with the one gathered by the Italian NSI. The name of the company is the reference information used for string matching. The first procedure is based on a backward recursive application of the critical factorization method. In the second algorithm, a shifting rule is defined based on the positions of blanks within the reference text T. About 80% of the units in ISAE register of business enterprises have been exactly matched. This suggests that the role of firms’ demography should be adequately taken into account to get satisfactory results and confirms the reliability of the proposed algorithms. Some structural characteristics of ISAE sampled firms can be now accounted for.
|Date of creation:||Jun 2009|
|Contact details of provider:|| Postal: Via Cesare Balbo 16, Roma|
Web page: http://www.istat.it/en/
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- Jovanovic, Boyan, 1982. "Selection and the Evolution of Industry," Econometrica, Econometric Society, vol. 50(3), pages 649-670, May.
- Malgarini, Marco & Margani, Patrizia & Martelli, Bianca Maria, 2005.
"Re-engineering the ISAE manufacturing survey,"
42440, University Library of Munich, Germany.
When requesting a correction, please mention this item's handle: RePEc:isa:wpaper:115. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Stefania Rossetti)
If references are entirely missing, you can add them using this form.