R. D. Parmar

Modelling Nonlinearity and Volatility in Castor Prices: A Comparative Study of ARIMA, ARCH, GARCH and Neural Network Models in Patan Market, Gujarat, India

R. D. Parmar, A. D. Kalola & J. K. Parmar · Journal of Scientific Research and Reports · 2026

Castor (Ricinus communis L.) is a commercially important non-edible oilseed crop in North Gujarat, and price volatility in its principal markets remains a major source of income risk for growers and traders. This study fitted and compared linear, volatility-based and machine-lear...