In recent years, the impact and usage of machinelearning have increased multi-fold. To get the best outcome, it is imperative to choose the right algorithm. Hence, Algorithm Selection is one of the most important sta...
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In this article, we generated some data as a result of new technologies, the internet, and linked items. Putting these facts into context and structuring them so that they may be perceived, understood, and reflected i...
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ISBN:
(纸本)9781665486842
In this article, we generated some data as a result of new technologies, the internet, and linked items. Putting these facts into context and structuring them so that they may be perceived, understood, and reflected is critical. Humans had traditionally studied data. As the availability of data grows larger, humans are progressively turning to computerized technologies that can replicate them. machinelearning refers to technologies that can resolve issues by learning from both data and data modifications. Artificial intelligence (AI) has a significant influence on e-learning studies, and machinelearning-based methodologies may be used to improve Technology Enhanced learning Environments (TELEs). This publication provides an outline of relevant study outcomes in this domain. Initially, we'll go over some basic machinelearning ideas. Then, we'll go through the significant latest research in the domain of e-learning that uses machinelearning.
This study proposes a machinelearning-based approach to improve exercise evaluation and schedule planning. Key point detection via MoveNet assesses user movements, compares them to standard exercises, and analyzes bo...
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The changes in the trading market are affected by many factors, and traditional forecasting methods are more and more difficult to meet people's needs. In order to improve the accuracy of prediction, this paper pr...
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The concentration of measure inequalities serves an essential role in statistics and machinelearning. This paper gives unbounded analogues of the McDiarmid-type exponential inequalities for three popular classes of d...
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The concentration of measure inequalities serves an essential role in statistics and machinelearning. This paper gives unbounded analogues of the McDiarmid-type exponential inequalities for three popular classes of distributions, namely sub-Gaussian, sub-exponential and heavy-tailed distributions. The inequalities in the sub-Gaussian and sub-exponential cases are distribution-dependent compared with the recent results, and the inequalities in the heavy-tailed case are not available in the previous works. The usefulness of the inequalities is illustrated through applications to the sample mean, U-statistics and V-statistics.
At present, the traditional machinelearning diagnosis method has some problems, such as the imbalance of various fault types and the great difference of recognition effect between different fault types. In order to s...
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At present, the traditional machinelearning diagnosis method has some problems, such as the imbalance of various fault types and the great difference of recognition effect between different fault types. In order to solve the problem of low accuracy of traditional machinelearning diagnosis methods, a multilevel fault diagnosis model of transformer based on hierarchical classification, generalized learning and ensemble learning is established. According to the imbalanced degree of each category sample, the method established the corresponding classifier, and carried on the diagnosis step by step. At the first level, the broad learning system was selected to extract three generalized feature labels-normal, discharge and overheat, which were fused with the original parameter input to guide the nine more detailed state types. In the second-level classifier, EasyEnsemble learning method is used to generate multiple data-balanced training subsets through under-sampling, fully balancing the fault information of most classes and a few classes, and then synthesized the final classifier through parallel training sub-classifiers, avoiding the problem of missing data information due to under-sampling. Experimental results show that, compared with the traditional diagnosis methods, the proposed method improved the generalization characteristics of a few types of faults, improved the overall accuracy rate, and had a more accurate and balanced fault diagnosis effect of power transformer. (C) 2022 Published by Elsevier Ltd.
In this paper, we propose an innovative deep learning-based model designed to detect potential security vulnerabilities in source code. The model is pretrained on the open-source PyPI code repository and a specially c...
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ISBN:
(纸本)9798350388732;9798350388725
In this paper, we propose an innovative deep learning-based model designed to detect potential security vulnerabilities in source code. The model is pretrained on the open-source PyPI code repository and a specially curated malicious code dataset, allowing it to deeply learn the syntactic structure and semantic information of the code, thus building a deep knowledge representation. We further refine this knowledge representation through fine-tuning to form a classifier focused on malicious code detection. Evaluation results on an open-source malicious code dataset indicate that our model's performance not only surpasses traditional machinelearning methods, recurrent neural networks (RNNs), and convolutional neural networks (CNNs), but also outperforms popular open-source security tools and significantly exceeds advanced detection models designed for other programming languages. Despite our model's smaller scale, limited by the amount of data and model parameters, it demonstrates exceptional performance on the test dataset, far exceeding traditional machinelearning techniques. This achievement highlights the strong potential of our model in the analysis of source code security and provides new directions and possibilities for future research in this field.
In ultra-precision diamond turning, the reduction of machining form errors can generally be achieved through on-machine measurement and compensation. However, the efficiency of conventional compensation methods is oft...
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In ultra-precision diamond turning, the reduction of machining form errors can generally be achieved through on-machine measurement and compensation. However, the efficiency of conventional compensation methods is often insufficient, particularly when high form accuracy is required or when intricate surface topography and microstructures need to be machined. Consequently, this research proposes a novel machining error compensation method based on iterative learning from on-machine measured data to enhance the machining accuracy and compensation efficiency. The on-machine measurement system and cutting path generation algorithm are introduced first. Then, the compensation method via iterative learning is presented theoretically, demonstrating a higher convergence order compared to the conventional method. Finally, machining experiments involving the cutting of cosine surfaces are conducted, followed by measurements of the processed workpieces. The experimental results indicate that after four rounds of compensation using the conventional method, the peak-to-valley (PV) value of the form error is reduced to 0.1134 mu m. In contrast, employing the proposed method, a similar value of 0.1156 mu m is achieved after only two rounds of compensation. This highlights the significant reduction in compensation time facilitated by the proposed method. Furthermore, the measurement results verify that the proposed compensation method maintains excellent surface quality.
The Common Vulnerabilities and Exposures (CVE) system is a widely used standard for identifying and tracking known vulnerabilities in software systems. The severity of these vulnerabilities must be determined in order...
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Recently, free-space optical (FSO) communication systems have gained attention as they pose as a possible solution to cope with the ever-increasing requirements for data transmission. FSO systems have a number of attr...
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