The MetaTrader platforms also let users test how an EA would have performed over historical data, using a process known as backtesting in the Strategy Tester section. This is useful when users want to check out how an EA would have performed over a given period and for a given instrument.
When an EA is built and then tested on historical data for the first time, this is known as testing on out-of-sample data, which means the EA has never used these historical prices (in which case the result will not have the benefit of hindsight). On the other hand, some developers may optimize their strategies over a historical data set (i. , run it multiple times over the past three months of EURUSD tick data) on purpose – which can lead close all trades ea mt4 to curve-fitted results. While there can be some benefits to ea bbma optimizing a strategy over historical data, results of a curve-fitted strategy can be misleading as only the best trades are cherry-picked, and the results of forward-testing the same strategy can triple ma crossover ea be significantly different.
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Therefore, forward testing a strategy can be even more important than backtesting it, before the value of results can forex expert & strategy be assessed. Another important distinction is that back-testing occurs locally on MT4 and requires users to have the platform running either on their local machines or using a dedicated Virtual Private Network (VPN). The same applies to trading with EAs; the platform must be open and running as the EA runs locally, which is forex expert & strategy why many traders use VPNs to host their EAs so the strategies can run continually without interruption on remote servers. Just like manual trading, any automated strategy forex is expert & strategy only as good as the results it can achieve on a risk-adjusted forex expert & strategy basis over time, and just as there are some good EAs available, there are also some bad ones circulating on the internet. Therefore, while there can be pros to using EAs to automate trading, forex expert & strategy traders must be aware of the pitfalls forex expert & strategy and know how to vet an EA before using one to manage their investment capital. Understand the trading methodology (strategy) the expert advisor follows.
See the traded understand that a strategy can win in forex expert & strategy specific periods and you probably won’t have to make any compromises on the other most important criteria.
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Even though many third-party programs offer to convert MT4 EAs to run on MT5, this difference in coding keeps both platforms isolated from each other on purpose. However, from build 600 onwards, MetaQuotes created forex expert & strategy a unified MetaEditor development environment and revised the MQL4 programming language to more closely match features available within MQL5 syntax.
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