Abstract
This paper deals with application of quantitative soft computing prediction models into financial area as reliable and accurate prediction models can be very helpful in management decision-making process. The authors suggest a new hybrid neural network which is a combination of the standard RBF neural network, a genetic algorithm, and a moving average. The moving average is supposed to enhance the outputs of the network using the error part of the original neural network. Authors test the suggested model on high-frequency time series data of USD/CAD and examine the ability to forecast exchange rate values for the horizon of one day. To determine the forecasting efficiency, they perform a comparative statistical out-of-sample analysis of the tested model with autoregressive models and the standard neural network. They also incorporate genetic algorithm as an optimizing technique for adapting parameters of ANN which is then compared with standard backpropagation and backpropagation combined with K-means clustering algorithm. Finally, the authors find out that their suggested hybrid neural network is able to produce more accurate forecasts than the standard models and can be helpful in eliminating the risk of making the bad decision in decision-making process.
Highlights
Techniques of artificial intelligence and machine learning started to apply in time series forecasting
First models of machine learning applied into time series forecasting were artificial neural networks (ANNs) [2]
This was due to the fact that the artificial neural network is a universal functional black-box approximator of nonlinear type [3,4,5] that is especially helpful in modeling of nonlinear processes having a priori unknown functional relations or system of relations is very complex to describe [6] and they are even able to model chaotic time series [7]
Summary
Techniques of artificial intelligence and machine learning started to apply in time series forecasting. This was due to the fact that the artificial neural network is a universal functional black-box approximator of nonlinear type [3,4,5] that is especially helpful in modeling of nonlinear processes having a priori unknown functional relations or system of relations is very complex to describe [6] and they are even able to model chaotic time series [7] They can be used for nonlinear modeling without knowing the relations between input and output variables. Following the theoretical knowledge of perceptron neural network published by McCulloch and Pitts [12] and Minsky and Papert [13], nowadays, it is mainly radial basis function (RBF) network [14, 15] that has been used as it showed to be better approximator than the basic perceptron network [16,17,18]
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