A Monte Carlo Study of Time Varying Coefficient (TVC) Estimation

Stephen Hall, Heather Gibson, George Tavlas and Mike Tsionas

Computational Economics, 2020, vol. 56, issue 1, No 7, 115-130

Abstract: Abstract A number of recent papers have proposed a time-varying-coefficient (TVC) procedure that, in theory, yields consistent parameter estimates in the presence of measurement errors, omitted variables, incorrect functional forms, and simultaneity. The key element of the procedure is the selection of a set of driver variables. With an ideal driver set the procedure is both consistent and efficient. However, in practice it is not possible to know if a perfect driver set exists. We construct a number of Monte Carlo experiments to examine the performance of the methodology under (i) clearly-defined conditions and (ii) a range of model misspecifications. We also propose a new Bayesian search technique for the set of driver variables underlying the TVC methodology. Experiments are performed to allow for incorrectly specified functional form, omitted variables, measurement errors, unknown nonlinearity and endogeneity. In all cases except the last, the technique works well in reasonably small samples.

Keywords: Time-varying coefficients; Specification errors; Monte Carlo (search for similar items in EconPapers)
JEL-codes: C13 C19 C22 (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (1)

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DOI: 10.1007/s10614-018-9878-6

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