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Published article "Rebuy algorithm: Multicurrency trading simulation".
![Rebuy algorithm: Multicurrency trading simulation](https://c.mql5.com/2/54/Multicurrency_Trading_Simulation_Avatar.png)
In this article, we will create a mathematical model for simulating multicurrency pricing and complete the study of the diversification principle as part of the search for mechanisms to increase the trading efficiency, which I started in the previous article with theoretical calculations.
Published article "Understanding MQL5 Object-Oriented Programming (OOP)".
![Understanding MQL5 Object-Oriented Programming (OOP)](https://c.mql5.com/2/56/object-oriented-programming-avatar.png)
As developers, we need to learn how to create and develop software that can be reusable and flexible without duplicated code especially if we have different objects with different behaviors. This can be smoothly done by using object-oriented programming techniques and principles. In this article, we will present the basics of MQL5 Object-Oriented programming to understand how we can use principles and practices of this critical topic in our software.
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- Programming tutorials 113 new comments
- Machine learning in trading: theory, models, practice and algo-trading 23 new comments
- MT5 History Quality only 48% 10 new comments
Published article "Simple Mean Reversion Trading Strategy".
![Simple Mean Reversion Trading Strategy](https://c.mql5.com/2/55/Mean_reversion_avatar.png)
Mean reversion is a type of contrarian trading where the trader expects the price to return to some form of equilibrium which is generally measured by a mean or another central tendency statistic.
Published article "Category Theory in MQL5 (Part 11): Graphs".
![Category Theory in MQL5 (Part 11): Graphs](https://c.mql5.com/2/55/Category-Theory-p11-avatar.png)
This article is a continuation in a series that look at Category Theory implementation in MQL5. In here we examine how Graph-Theory could be integrated with monoids and other data structures when developing a close-out strategy to a trading system.
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![How to purchase a trading robot from the MetaTrader Market and to install it?](https://c.mql5.com/2/0/MQL5_market__1.png)
How to purchase a trading robot from the MetaTrader Market and to install it?
A product from the MetaTrader Market can be purchased on the MQL5.com website or straight from the MetaTrader 4 and MetaTrader 5 trading platforms. Choose a desired product that suits your trading style, pay for it using your preferred payment method, and activate the product.
![How to Test a Trading Robot Before Buying](https://c.mql5.com/2/0/avatar_test_mql5_market.png)
How to Test a Trading Robot Before Buying
Buying a trading robot on MQL5 Market has a distinct benefit over all other similar options - an automated system offered can be thoroughly tested directly in the MetaTrader 5 terminal. Before buying, an Expert Advisor can and should be carefully run in all unfavorable modes in the built-in Strategy Tester to get a complete grasp of the system.
![MetaTrader 5 on Linux](https://c.mql5.com/2/0/linux5.png)
In this article, we demonstrate an easy way to install MetaTrader 5 on popular Linux versions — Ubuntu and Debian. These systems are widely used on server hardware as well as on traders’ personal computers.
Most downloaded source codes this month
- Trade Sessions Indicator This indicator is based on DRAW_FILLING buffers. The input parameters are absent, the TimeTradeServer(), TimeGMT() functions are used.
- Candle Time End and Spread The indicator displays the current spread and the time till closing the bar (candlestick) at the same time.
- Ma Price Cross (Custom Time) Buys when price breaks above the MA and Sells when price breaks below the MA. User can choose the time range (server time) to trade in.
The most popular forum topics:
- What exactly is that? 35 new comments
- Questions from Beginners MQL5 MT5 MetaTrader 5 21 new comments
- help on iCustom, error calling 1 buffer 15 new comments
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Published article "Creating an EA that works automatically (Part 15): Automation (VII)".
![Creating an EA that works automatically (Part 15): Automation (VII)](https://c.mql5.com/2/51/Avatar_aprendendo_construindo_Part_15.png)
To complete this series of articles on automation, we will continue discussing the topic of the previous article. We will see how everything will fit together, making the EA run like clockwork.
Published article "Forecasting with ARIMA models in MQL5".
![Forecasting with ARIMA models in MQL5](https://c.mql5.com/2/55/Forecasting_with_ARIMA_models_in_MQL5_avatar.png)
In this article we continue the development of the CArima class for building ARIMA models by adding intuitive methods that enable forecasting.
2 new signals now available for subscription:
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Most read articles this week
![How to purchase a trading robot from the MetaTrader Market and to install it?](https://c.mql5.com/2/0/MQL5_market__1.png)
How to purchase a trading robot from the MetaTrader Market and to install it?
A product from the MetaTrader Market can be purchased on the MQL5.com website or straight from the MetaTrader 4 and MetaTrader 5 trading platforms. Choose a desired product that suits your trading style, pay for it using your preferred payment method, and activate the product.
![How to Test a Trading Robot Before Buying](https://c.mql5.com/2/0/avatar_test_mql5_market.png)
How to Test a Trading Robot Before Buying
Buying a trading robot on MQL5 Market has a distinct benefit over all other similar options - an automated system offered can be thoroughly tested directly in the MetaTrader 5 terminal. Before buying, an Expert Advisor can and should be carefully run in all unfavorable modes in the built-in Strategy Tester to get a complete grasp of the system.
![MetaTrader 5 on Linux](https://c.mql5.com/2/0/linux5.png)
In this article, we demonstrate an easy way to install MetaTrader 5 on popular Linux versions — Ubuntu and Debian. These systems are widely used on server hardware as well as on traders’ personal computers.
Most downloaded source codes this week
- Strength Index Signal provides clear arrows which clearly show the direction of the currency pair.
- AK-47 Scalper EA The AK-47 Scalper EA is fully automated. It employs a strategy of continuously entering Sell Stop orders and will modify them when the price moves against the pending orders.
- Trade Sessions Indicator This indicator is based on DRAW_FILLING buffers. The input parameters are absent, the TimeTradeServer(), TimeGMT() functions are used.
The most popular forum topics:
- Pair trading and multicurrency arbitrage. The showdown. 32 new comments
- Machine learning in trading: theory, models, practice and algo-trading 30 new comments
- help on iCustom, error calling 1 buffer 18 new comments
3 new signals now available for subscription:
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4 new signals now available for subscription:
Growth: | 3 780.25 | % |
Equity: | 36 603.23 | HKD |
Balance: | 40 000.00 | HKD |
Published article "Matrices and vectors in MQL5: Activation functions".
![Matrices and vectors in MQL5: Activation functions](https://c.mql5.com/2/54/matrix_vector_avatar.png)
Here we will describe only one of the aspects of machine learning - activation functions. In artificial neural networks, a neuron activation function calculates an output signal value based on the values of an input signal or a set of input signals. We will delve into the inner workings of the process.