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Comparison of Selected Machine Learning Algorithms for Industrial Electrical Tomography

机译:工业电子断层扫描中所选机器学习算法的比较

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摘要

The main goal of this work was to compare the selected machine learning methods with the classic deterministic method in the industrial field of electrical impedance tomography. The research focused on the development and comparison of algorithms and models for the analysis and reconstruction of data using electrical tomography. The novelty was the use of original machine learning algorithms. Their characteristic feature is the use of many separately trained subsystems, each of which generates a single pixel of the output image. Artificial Neural Network (ANN), LARS and Elastic net methods were used to solve the inverse problem. These algorithms have been modified by a corresponding increase in equations (multiply) for electrical impedance tomography using the finite element method grid. The Gauss-Newton method was used as a reference to machine learning methods. The algorithms were trained using learning data obtained through computer simulation based on real models. The results of the experiments showed that in the considered cases the best quality of reconstructions was achieved by ANN. At the same time, ANN was the slowest in terms of both the training process and the speed of image generation. Other machine learning methods were comparable with the deterministic Gauss-Newton method and with each other.
机译:这项工作的主要目的是将所选的机器学习方法与经典的确定性方法在电阻抗层析成像的工业领域进行比较。该研究集中在算法和模型的开发和比较上,这些算法和模型用于使用电子断层扫描进行数据分析和重建。新颖之处在于使用了原始的机器学习算法。它们的特征是使用许多单独训练的子系统,每个子系统都会生成输出图像的单个像素。人工神经网络(ANN),LARS和弹性网方法用于解决反问题。这些算法已经通过使用有限元方法网格的电阻抗层析成像的方程式(相乘)的相应增加(乘数)进行了修改。高斯-牛顿法被用作机器学习方法的参考。使用通过基于真实模型的计算机仿真获得的学习数据对算法进行了训练。实验结果表明,在考虑的情况下,人工神经网络可以实现最佳的重建质量。同时,就训练过程和图像生成速度而言,人工神经网络是最慢的。其他机器学习方法可与确定性高斯-牛顿方法相互比较。

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