Filters, Waves and Spectra

Stephen Pollock, University of Leicester

  • Date: 15 MARCH 2019  from 14:30 to 15:30

  • Event location: Room I, Ground floor, Department of Statistics Science, Via Belle Arti 41, Bologna

  • Type: Statistics Seminars

Relatore
Stephen Pollock - University of Leicester

 

Abstract

Econometric analysis requires filtering techniques that are adapted to cater to data sequences that are short and that have strong trends. Whereas the economists have tended to conduct their analyses in the time domain, the engineers have emphasised the frequency domain. This paper places its emphasis in the frequency domain; and it shows how the frequency-domain methods can be adapted to cater to short trended sequences. Working in the frequency domain allows an unrestricted choice to be made of the frequency response of a filter. It also requires that the data should be free of trends. Methods for extracting the trends prior to filtering and for restoring them thereafter are described.

L'Organizzatore                                                           Il Direttore
Prof. Alessandra Luati                                                  Prof. Angela Montanari