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This is a discussion on Metatrader 5 / Metatrader 4 for MQL5 / MQL4 articles preview within the General Discussion forums, part of the Trading Forum category; With the advancement of machine learning and artificial intelligence technologies, there is a growing need to optimize processes for working ...

      
   
  1. #461
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    Working with ONNX models in float16 and float8 formats

    With the advancement of machine learning and artificial intelligence technologies, there is a growing need to optimize processes for working with models. The efficiency of model operation directly depends on the data formats used to represent them. In recent years, several new data types have emerged, specifically designed for working with deep learning models.

    In this article, we will focus on two such new data formats - float16 and float8, which are beginning to be actively used in modern ONNX models. These formats represent alternative options to more precise but resource-intensive floating-point data formats. They provide an optimal balance between performance and accuracy, making them particularly attractive for various machine learning tasks. We will explore the key characteristics and advantages of float16 and float8 formats, as well as introduce functions for converting them to standard float and double formats.

    This will help developers and researchers better understand how to effectively use these formats in their projects and models. As an example, we will examine the operation of the ESRGAN ONNX model, which is used for image quality enhancement.
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    Neural networks made easy (Part 61): Optimism issue in offline reinforcement learning

    Recently, offline reinforcement learning methods have become widespread, which promises many prospects in solving problems of varying complexity. However, one of the main problems that researchers face is the optimism that can arise while learning. The agent optimizes its strategy based on the data from the training set and gains confidence in its actions. But the training set is quite often not able to cover the entire variety of possible states and transitions of the environment. In a stochastic environment, such confidence turns out to be not entirely justified. In such cases, the agent's optimistic strategy may lead to increased risks and undesirable consequences.
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    MQL5 Wizard Techniques you should know (Part 13). DBSCAN for Expert Signal Class

    These series of articles, on the MQL5 Wizard, are a segue on how often abstract ideas in Mathematics of other fields of life can be enlivened as trading systems and tested or validated before any serious commitments is made on their premise. This ability to take simple and not fully implemented or envisaged ideas and explore their potential as trading systems is one of the gems presented by the MQL5 wizard assembly for expert advisers. The expert classes of the wizard furnish a lot of the mundane features required by any expert adviser especially as it relates to opening and closing trades but also in overlooked aspects like executing decisions only on a new bar formation.

    So, in keeping this library of processes as a separate aspect of an expert adviser, with the MQL5 Wizard any idea can not only be tested independently, but also compared on a somewhat equal footing to any other ideas (or methods) that could be under consideration. In these series we have looked at alternative clustering methods like the agglomerative clustering as well as the k-means clustering.
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    Neural networks made easy (Part 66): Exploration problems in offline learning

    In this article, we will get acquainted with the Exploratory Data for Offline RL (ExORL) framework, which was presented in the paper "Don't Change the Algorithm, Change the Data: Exploratory Data for Offline Reinforcement Learning". The results presented in that article demonstrate that the correct approach to data collection has a significant impact on the final learning outcomes. This impact is comparable to that of the choice of learning algorithm and model architecture.
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    Neural networks made easy (Part 67): Using past experience to solve new tasks

    Reinforcement learning is built on maximizing the reward received from the environment during interaction with it. Obviously, the learning process requires constant interaction with the environment. However, situations are different. When solving some tasks, we can encounter various restrictions on such interaction with the environment. A possible solution for such situations is to use offline reinforcement learning algorithms. They allow you to train models on a limited archive of trajectories collected during preliminary interaction with the environment, while it was available.
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    Overcoming ONNX Integration Challenges

    ONNX (Open Neural Network Exchange) revolutionizes the way we make sophisticated AI-based mql5 programs. This new technology to MetaTrader 5 is the way forward to machine learning as it shows a lot of promise like no other for its purpose however, ONNX comes with a couple of challenges that can give you headaches if you have no clue how to solve them whatsoever.

    This article assumes you have a basic understanding of machine learning and AI theory, and that you have at least tried to use ONNX models in mql5 once or twice.
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    Data Science and ML (Part 22): Leveraging Autoencoders Neural Networks for Smarter Trades by Moving from Noise to Signal

    In this article, we will see how we can use an autoencoder neural network in the financial space to help us remove noise in the market so that we can discover trading opportunities.

    This article is an easy read if you have a basic understanding of ONNX, PCA, and Neural Networks in general.

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