To introduce a variety of statistical models for time series and cover the main methods for analysing these models.
UNIT I
Review of Linear Models: Model building in time series analysis. AR, MA, ARMA and ARIMA model and model building by Box-Jenkins approach. Stationarity and invertibility conditions, ARIMA(p,d,q) model, estimation of parameters for AR, MA, ARMA and ARIMA processes, identification of processes with ACF PACF, Model order estimation techniques-AIC, AICC, BIC, EDC, FPE and forecasting.
UNIT II
Forms of non-stationarity in time series, Unit root: Dickey-Fuller, augmented Dickey-Fuller and Phillips-Perron tests. Panel data models: Balance and unbalance panel data, estimation in random effect and fixed effect models. ARCH and GARCH processes and models with ARCH, GARCH errors.
UNIT III
Multivariate time series processes and their properties: Vector autoregressive (VAR), vector moving average (VMA) and vector autoregressive moving average (VARMA) processes.
UNIT IV
Non Linear Time Series Models: Non-linear auto regression, Threshold principle and threshold models. Amplitude-dependent exponential autoregressive (EXPAR), fractional autoregressive (FAR), Product Autoregressive Model (PAR), random coefficient autoregressive (RCAR), discrete state space auto regressive bilinear (BL), non-linear moving average, autoregressive models with conditional heteroskedasticity (ARCH).
UNIT V
Non-linear Least Square Prediction: Non-linear least square prediction in non-linear autoregressive, nonlinear moving average, Bilinear and random coefficient autoregressive models