On the Relationship between the S Array and the Box-Jenkins Method of ARMA Model Identification
S 阵列与 Box–Jenkins ARMA 模型识别方法的关系AI 解读 ↓
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S 阵列与 Box–Jenkins ARMA 模型识别方法的关系AI 解读 ↓
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This paper investigates an extension of the partial autocorrelation function, which we call the generalized partial autocorrelation function. These generalized partial autocorrelations, which are not true correlations except when p = 0, are useful in examining the relationship between the S array method of Gray, Kelley, and McIntire (1978) and the Box-Jenkins approach to ARMA model identification. Also, the generalized partial autocorrelation is shown to be a useful model identification tool to be used along with the S array. Also discussed is a reformating of the S array into a shifted S array that the authors believe is easier to use in practice than the S array. The methods of this paper are illustrated by means of examples, including an analysis of the Makridakis (1978) metals series data.