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Spectral Density Estimation and Robust Hypothesis Testing Using Steep Origin Kernels Without Truncation

  • Phillips, Peter C.B.
  • Sun, Yixiao
  • Jin, Sainan

In this paper, we construct a new class of kernel by exponentiating conventional kernels and use them in the long run variance estimation with and without smoothing. Depending on whether the exponent is allowed to grow with the sample size, we establish different asymptotic approximations to the sampling distribution of the proposed estimator. When the exponent is passed to infinity with the sample size, the new estimator is consistent and shown to be asymptotically normal. When the exponent is fixed, the new estimator is inconsistent and has a nonstandard limiting distribution. It is shown via Monte Carlo experiments that, when the chosen exponent is small in practical applications, the nonstandard limit theory provides better approximations to the finite sampling distributions of the spectral density estimator and the associated test statistic in regression settings.

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Paper provided by Department of Economics, UC San Diego in its series University of California at San Diego, Economics Working Paper Series with number qt6mf9q2rt.

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Date of creation: 01 Nov 2004
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Handle: RePEc:cdl:ucsdec:qt6mf9q2rt
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