Most national economic data and many marketing series are compiled monthly according to the Gregorian Calendar, but some of the ancient festivals or holidays, such as Easter, Jewish Passover, and Chinese New Year, are set by lunar calendar. Therefore the date of a holiday may vary between two...

In this paper we develop a semi-parametric approach to model nonlinear relationships in serially correlated data. To illustrate the usefulness of this approach, we apply it to a set of hourly electricity load data. This approach takes into consideration the effect of temperature combined with...