We build on an estimation method which can accommodate time variation in a cointegrating relationship and present a test for cointegration under this setup. We apply our test procedure to the UK Great Ratios and find little evidence for cointegration when the parameters are assumed constant, but strong evidence when allowing them to drift slowly over time.
Time-varying cointegration with an application to the UK Great Ratios
Petrova, Katerina;
2020
Abstract
We build on an estimation method which can accommodate time variation in a cointegrating relationship and present a test for cointegration under this setup. We apply our test procedure to the UK Great Ratios and find little evidence for cointegration when the parameters are assumed constant, but strong evidence when allowing them to drift slowly over time.
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