Fig. 2From: Forecasting and trading cryptocurrencies with machine learning under changing market conditionsThe daily closing volume weighted average prices of bitcoin, ethereum, and litecoin for the period from August 15, 2015 to March 3, 2019 come from the CoinMarketCap site. The figure shows the partition of the sample into training, validation, and test sub-samples, according to the 50ā25ā25% ruleBack to article page