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English-Chinese Neural Machine Translation Based on Self-organizing Mapping Neural Network and Deep Feature Matching
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作者 Shu Ma 《IJLAI Transactions on Science and Engineering》 2024年第3期1-8,共8页
The traditional Chinese-English translation model tends to translate some source words repeatedly,while mistakenly ignoring some words.Therefore,we propose a novel English-Chinese neural machine translation based on s... The traditional Chinese-English translation model tends to translate some source words repeatedly,while mistakenly ignoring some words.Therefore,we propose a novel English-Chinese neural machine translation based on self-organizing mapping neural network and deep feature matching.In this model,word vector,two-way LSTM,2D neural network and other deep learning models are used to extract the semantic matching features of question-answer pairs.Self-organizing mapping(SOM)is used to classify and identify the sentence feature.The attention mechanism-based neural machine translation model is taken as the baseline system.The experimental results show that this framework significantly improves the adequacy of English-Chinese machine translation and achieves better results than the traditional attention mechanism-based English-Chinese machine translation model. 展开更多
关键词 Chinese-English translation model self-organizing mapping neural network deep feature matching deep learning
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基于EVMD和SODN的滚动轴承故障识别研究 被引量:3
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作者 杨润贤 郭林炀 +3 位作者 周正平 常兆庆 李国伟 徐庆乐 《机电工程》 CAS 北大核心 2021年第10期1221-1229,共9页
在传统的滚动轴承故障识别方法中,存在对轴承振动信号的人工特征提取、选择困难的问题,提出了一种基于增强变分模态分解(EVMD)和自组织深层网络(SODN)的滚动轴承故障识别方法。首先,为了自动确定变分模态分解的模态数目,提出了一种功率... 在传统的滚动轴承故障识别方法中,存在对轴承振动信号的人工特征提取、选择困难的问题,提出了一种基于增强变分模态分解(EVMD)和自组织深层网络(SODN)的滚动轴承故障识别方法。首先,为了自动确定变分模态分解的模态数目,提出了一种功率谱的分割方法,从而提高了轴承振动信号的信噪比,并将滚动轴承的振动信号自适应分解为若干本征模态分量(IMFs);然后,根据综合评价指标,选择了较能反映轴承故障特征的IMFs分量,同时为了达到信号降噪的目的,对其进行了重构;最后,将自组织策略引入到深层自编码器中,进而构造了SODN,并将降噪后的轴承振动信号输入SODN,进行了自动特征学习与故障识别的对比实验,以验证该方法的可行性和有效性。研究结果表明:所提出的EVMD-SODN方法的轴承故障识别率达99.15%,标准差仅0.10,在故障识别率方面相比于其他组合模型具有较大优势。 展开更多
关键词 滚动轴承 故障识别 变分模态分解 自组织深层网络 深层自编码器 本征模态分量
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Multiple input self-organizing-map ResNet model for optimization of petroleum refinery conversion units
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作者 Jiannan Zhu Vladimir Mahalec +2 位作者 Chen Fan Minglei Yang Feng Qian 《Frontiers of Chemical Science and Engineering》 SCIE EI CSCD 2023年第6期759-771,共13页
This work introduces a deep-learning network,i.e.,multi-input self-organizing-map ResNet(MISR),for modeling refining units comprised of two reactors and a separation train.The model is comprised of self-organizing-map... This work introduces a deep-learning network,i.e.,multi-input self-organizing-map ResNet(MISR),for modeling refining units comprised of two reactors and a separation train.The model is comprised of self-organizing-map and the neural network parts.The self-organizing-map part maps the input data into multiple two-dimensional planes and sends them to the neural network part.In the neural network part,residual blocks enhance the convergence and accuracy,ensuring that the structure will not be overfitted easily.Development of the MISR model of hydrocracking unit also benefits from the utilization of prior knowledge of the importance of the input variables for predicting properties of the products.The results show that the proposed MISR structure predicts more accurately the product yields and properties than the previously introduced self-organizing-map convolutional neural network model,thus leading to more accurate optimization of the hydrocracker operation.Moreover,the MISR model has smoother error convergence than the previous model.Optimal operating conditions have been determined via multi-round-particle-swarm and differential evolution algorithms.Numerical experiments show that the MISR model is suitable for modeling nonlinear conversion units which are often encountered in refining and petrochemical plants. 展开更多
关键词 HYDROCRACKING convolutional neural networks self-organizing map deep learning data-driven optimization
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