# Regime switching and mixed frequency models in EViews

1 day (5th July 2020 - 5th July 2020) EViews Introductory, Various
Delivered by: Dr. Malvina Marchese
Econometrics, Machine Learning, Various methods

Linear regression and ARIMA models are the primary tools for econometric and statistical analysis in time series. There is, however, considerable evidence that nonlinear modelling is more appropriate, especially in the analysis of financial and macroeconomic relationships that are subject to regime change. This workshop provides a comprehensive introduction to two advanced econometric methodologies that in recent years have gained wide popularity in modelling and forecasting time series data: switching regression models and mixed data sampling models.

Traditional approaches to time series analysis assume constant parameters over time. There is, however, very strong evidence that economic relationships do change over time, according to observable or unobservable states. Regime switching models are linear regression models with nonlinearities arising from discrete changes in regime.

Traditional approaches to time-series estimation and forecasting in economics require that the variables be of the same frequency. This often causes a problem since most macroeconomic data is reported at different intervals and frequencies. Mixed-Data Sampling (MIDAS) is a method of estimating and forecasting from models where the dependent variable is recorded at a lower frequency than one or more of the independent variables. Unlike the traditional aggregation approach, MIDAS uses information from every observation in the higher frequency space.

Regime switching models
Taking a “learning-by-doing” approach, we aim to present the three classes of most popular regime switching models: Threshold regression models, Smooth Transition models and Markov switching models. Dynamics specifications are discussed for all three classes through the use of lagged dependent variables as explanatory variables and through the presence of auto-correlated errors, employing plenty of financial and macroeconomic data. Forecasting applications of threshold univariate models are presented and discussed in-depth so that participants will learn a wide range of regime switching models and gain the ability to identify which one to use for a specific modelling and forecasting purpose.

Mixed-Data Sampling (MIDAS)
This workshop provides a comprehensive introduction to MIDAS modelling and forecasting in EViews. We will discuss in-depth MIDAS regression models by employing plenty of macoreconometric data examples and a constant stream of examples and applications as well as forecasting with MIDAS models. Participants leave with a sound know-how on MIDAS regression modelling, testing and forecasting and the ability to use them for their own research purpose.