We discuss how prior regression on seasonal dummies leads to singularities in periodogram regression procedures for the detection of long memory. We suggest a modified procedure. We illustrate the problems using monthly inflation data from Hassler and Wolters (1995).

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hdl.handle.net/1765/1385
Econometric Institute Research Papers
Erasmus School of Economics

Ooms, M.& Hassler, U. (1996). A Note on the Effect of Seasonal Dummies on the Periodogram Regression. In Econometric Institute Research Papers (EI 9629-/A).http://hdl.handle.net/1765/1385