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시계열 모형 분석을 위한 보완된 콕스 검정법

A Modified Cox Test for Time Series Models

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참고문헌

키워드

주제분류경제학

초록

본 논문은 전통적인 콕스 검정법이 가지고 있는 계산상의 어려움을 완화시키기 위해 조건부 평균과 조건부 분산을 이용한 보완된 콕스 검정법을 제시한다. 처음 두 조건부 적률을 이용한 이러한 접근방법은 주어진 관찰치 전체의 결합밀도함수를 구하지 않아도 되는 계산상의 이점과 시계열모형에 쉽게 적용될 수 있는 장점이 있다. 제안된 검정법에 대한 만족 할만 한 모의실험 결과를 얻었으며 비선형 오차 방정식 모형에 대한 실증분석결과 GARCH모형이 bilinear모형보다 더 올바른 모형으로 나타났다.

Abstract

We propose a new approach based on conditional means and variances to avoid the computational difficulties of the traditional Cox test. This approach can be extended to more complicated time series models. Monte Carlo experiments are performed to investigate the potential applicability of the proposed test. Empirical applications to two different non-linear error equation models are also examined.

참고문헌 (17)

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  3. and Wooldridge, "Quasi-Maximum Likelihood Estimation and Inference in Dynamic Models With Time-Varying Covariance", pp.143~172 (1992)
  4. Cox, "Tests of Separate Families of Hypothesis in Proceedings of the 4th Berkeley Symposium University of California Press", pp.105~123 (1961)
  5. Cox,D.R, "Further Results on Tests of Separate Families of Hypothesis", series b(24), pp.406~424 (1962)
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  7. Davidson, "Model Specification Tests Based on Artificial Linear Regressions", pp.485~502 (1984)
  8. Engle,R, "Autoregressive Conditional Heteroskedasticity with Estimates of the Variance of United Kingdom Inflation", 50, pp.987~1008 (1982)
  9. Fisher, "On the Interpretation of the Cox Test in Econometrics", eco(mics letter), pp.145~150 (1979)
  10. Monfort, "Handbook of Econometrics", and trog testing(n n-nested hypothesis), pp.2583~2633 (1983)
  11. Granger, "An Introduction to Bilinear Time Series Models" (1978)
  12. and Richard, "The Encompassing Principle and its Applications to Testing Non-Nested Hypothesis", eco(metrica), pp.657~678 (1986)
  13. "A Simulation Approach to the Problem of Computing Cox's Statistic for Testing Non-Nested Models Journal of Econometrics", pp.377~392 (1993)
  14. White,H, "Regularity Conditions for Cox’s Test of Non-Nested Hypotheses", 19, pp.307~327 (1982)
  15. Wooldridge,J, "An Encompassing Approach to Conditional Mean Tests with Applications to Testing Non-Nested Hypotheses", 45, pp.331~350 (1990)
  16. Wooldridge, "A Unified Approach to Robust", eco(mics theory), pp.17~43 (1990)
  17. Wooldridge, "Estimation and Inference for Dependent Processes Handbook of Econometrics", pp.2659~2738 (1994), North-Holland

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