Degeneracy of time series models: The best model is not always the correct model

Degeneracy of time series models: The best model is not always the correct model
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DOI:
10.1063/1.2213957
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发表时间:
2006-09-01
期刊:
影响因子:
2.9
通讯作者:
Nakamura, Tomomichi
Nakamura, Tomomichi
中科院分区:
数学2区
文献类型:
--
作者:
Judd, Kevin;Nakamura, Tomomichi

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在某种意义上,有许多很好的技术可以在给定观测时间序列的情况下找到确定性系统的最佳模型。我们研究了一个名为模型退化的问题,它的结果是,即使存在一个系统的完美模型,人们也无法使用目前可用的最佳技术找到它。利用全局多项式模型和Grobner基理论对该问题进行了说明。(C)2006年美国物理研究所。
There are a number of good techniques for finding, in some sense, the best model of a deterministic system given a time series of observations. We examine a problem called model degeneracy, which has the consequence that even when a perfect model of a system exists, one does not find it using the best techniques currently available. The problem is illustrated using global polynomial models and the theory of Grobner bases. (c) 2006 American Institute of Physics.