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Conditionally Efficient Estimation of Long-run Relationships Using Mixed-frequency Time Series

I analyze efficient estimation of a cointegrating vector when the regressand is observed at a lower frequency than the regressors. Previous authors have examined the effects of specific temporal aggregation or sampling schemes, finding conventionally efficient techniques to be efficient only when both the regressand and the regressors are average sampled. Using an alternative method for analyzing aggregation under more general weighting schemes, I derive an efficiency bound that is conditional on the type of aggregation used on the regressand and differs from the unconditional bound defined by the infeasible full-information high-frequency data-generating process. I modify a conventional estimator, canonical cointegrating regression (CCR), to accommodate cases in which the aggregation weights are either unknown or known. In the unknown case, the correlation structure of the error term generally confounds identification of the conditionally efficient weights. In the known case, the correlation structure may be utilized to offset the potential information loss from aggregation, resulting in a conditionally efficient estimator. Efficiency is illustrated using a simulation study and an application to estimating a gasoline demand equation.

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File URL: http://economics.missouri.edu/working-papers/2011/WP1103_miller.pdf
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Paper provided by Department of Economics, University of Missouri in its series Working Papers with number 1103.

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Length: 27 pgs.
Date of creation: 19 May 2011
Date of revision: 30 May 2012
Publication status: Forthcoming in Econometric Reviews
Handle: RePEc:umc:wpaper:1103
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Web page: http://economics.missouri.edu/

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