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The k-nearest neighbour-based GMDH prediction model and its applications

Author

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  • Qiumin Li
  • Yixiang Tian
  • Gaoxun Zhang

Abstract

This paper centres on a new GMDH (group method of data handling) algorithm based on the k-nearest neighbour (k-NN) method. Instead of the transfer function that has been used in traditional GMDH, the k-NN kernel function is adopted in the proposed GMDH to characterise relationships between the input and output variables. The proposed method combines the advantages of the k-nearest neighbour (k-NN) algorithm and GMDH algorithm, and thus improves the predictive capability of the GMDH algorithm. It has been proved that when the bandwidth of the kernel is less than a certain constant C, the predictive capability of the new model is superior to that of the traditional one. As an illustration, it is shown that the new method can accurately forecast consumer price index (CPI).

Suggested Citation

  • Qiumin Li & Yixiang Tian & Gaoxun Zhang, 2014. "The k-nearest neighbour-based GMDH prediction model and its applications," International Journal of Systems Science, Taylor & Francis Journals, vol. 45(11), pages 2301-2308, November.
    • Handle: RePEc:taf:tsysxx:v:45:y:2014:i:11:p:2301-2308
    DOI: 10.1080/00207721.2013.768716
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