A Comparison of Neural Networks with Time Series Models for Forecasting Returns on a Stock Market Index

Authors:
Juliana Yim
Affiliations:
-
Venue:
IEA/AIE '02 Proceedings of the 15th international conference on Industrial and engineering applications of artificial intelligence and expert systems: developments in applied artificial intelligence
Year:
2002

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Abstract

This paper analyses whether artificial neural networks can outperform traditional time series models for forecasting stock market returns. Specifically, neural networks were used to predict Brazilian daily index returns and their results were compared with a time series model with GARCH effects and a structural time series model (STS). Further, using output from ARMA-GARCH model as an input to a neural network is explored. Several procedures were utilized to evaluate forecasts, RMSE, MAE and the Chong and Hendry encompassing test. The results suggest that artificial neural networks are superior to ARMA-GARCH models and STS models and volatility derived from the ARMA-GARCH model is useful as an input to a neural network.