RT Journal Article SR Electronic A1 Mastný, Václav T1 Selected aspects of modelling of foreign exchange rates with neural networks JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis YR 2014 VO 53 IS 3 SP 109 OP 116 DO 10.11118/actaun200553030109 UL https://acta.mendelu.cz/artkey/acu-200503-0012.php AB This paper deals with forecasting of the high-frequency foreign exchange market with neural networks. The objective is to investigate some aspects of modelling with neural networks (impact of topology, size of training set and time horizon of the forecast on the performance of the network). The data used for the purpose of this paper contain 15-minute time series of US dollar against other major currencies, Japanese Yen, British Pound and Euro. The results show, that performance of the network in terms of correct directorial change is negatively influenced by increasing number of hidden neurons and decreasing size of training set. The performance of the network is influenced by sampling frequency.