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基于EMD-DELM-LSTM组合模型的湖泊水位多时间尺度预测
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作者 余周 姜涛 +2 位作者 范鹏辉 牛超群 陈兵 《长江科学院院报》 CSCD 北大核心 2024年第6期28-35,共8页
针对水位时间序列具有线性与非线性混合、不确定性高等特点带来的预测困难问题,提出了一种基于经验模态分解(EMD)、长短时记忆网络(LSTM)和深度极限学习机(DELM)的EMD-DELM-LSTM组合模型,其中DELM和LSTM采用并联结构预测,并与EMD串联连... 针对水位时间序列具有线性与非线性混合、不确定性高等特点带来的预测困难问题,提出了一种基于经验模态分解(EMD)、长短时记忆网络(LSTM)和深度极限学习机(DELM)的EMD-DELM-LSTM组合模型,其中DELM和LSTM采用并联结构预测,并与EMD串联连接。首先使用EMD将原始信号分解为若干个具有单一特征的本征模态函数(IMFs),再将IMFs分类重组为高、中、低频信号后输入DELM-LSTM并联结构中进行预测并重构。以广州某大学重要湖泊为例验证模型的有效性,结果表明,与EMD-LSTM、EMD-DELM、LSTM、DELM和BiLSTM模型相比,本模型在不同时间尺度下的预测性能均有显著提升,其中40 min时间尺度下的预测性能提升效果最为明显,分别较对比模型提升43.08%、22.92%、45.79%、30.92%和47.31%。可见,本模型对于不同时间尺度的水位预测具有良好的可靠性和稳定性。 展开更多
关键词 水位预测 EMD-delm-LSTM 经验模态分解 多时间尺度分析 人工神经网络
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基于IEWT-DELM的行星齿轮箱故障诊断 被引量:1
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作者 贺全玲 魏秀业 +1 位作者 赵峰 王佳宁 《电子测量技术》 北大核心 2023年第3期190-196,共7页
针对在恶劣情况下行星齿轮箱特征难以提取以及多种故障状态下难以准确分类这种问题,提出在经验小波变换基础上将原有频谱分解替换为在噪声干扰下更为稳定的尺度谱分解的改进经验小波变换与深度极限学习机相结合的故障诊断方法。首先,将... 针对在恶劣情况下行星齿轮箱特征难以提取以及多种故障状态下难以准确分类这种问题,提出在经验小波变换基础上将原有频谱分解替换为在噪声干扰下更为稳定的尺度谱分解的改进经验小波变换与深度极限学习机相结合的故障诊断方法。首先,将行星齿轮箱不同故障工况下的信号利用改进经验小波变换分别进行降噪处理并提取各阶调频-调幅分量,之后选取包络幅值峭度较高的前6个分量多尺度样本熵作为故障特征集,输入到深度极限学习机中进行故障诊断分类,行星齿轮箱故障诊断试验表明:与EWT、EMD与DELM结合的故障诊断准确率相比,该方法故障平均识别率可达97.6%,具有一定的有效性。 展开更多
关键词 IEWT MSE delm 故障诊断 信号处理
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基于tGSSA-DELM的短期光伏发电功率预测 被引量:1
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作者 杨海柱 李庆华 张鹏 《智慧电力》 北大核心 2023年第10期70-77,共8页
针对目前光伏发电预测的预测耗时和预测精度不足等问题,提出了一种基于皮尔逊相关性分析、改进的麻雀算法(tGSSA)和深度极限学习机(DELM)的组合预测方法。该方法首先通过皮尔逊相关性分析方法对影响光伏出力的主要因素进行筛选,然后采... 针对目前光伏发电预测的预测耗时和预测精度不足等问题,提出了一种基于皮尔逊相关性分析、改进的麻雀算法(tGSSA)和深度极限学习机(DELM)的组合预测方法。该方法首先通过皮尔逊相关性分析方法对影响光伏出力的主要因素进行筛选,然后采用黄金正弦搜索策略、自适应t分布和动态选择策略来增强麻雀算法的全局搜索能力和局部寻优能力,最后利用tGSSA群智能优化算法对DELM中的输入权重和偏置进行寻优,在得到最优输入权重和偏置的情况下对光伏发电功率进行预测。以澳大利亚某光伏站一年数据按季节划分后进行预测研究,将本文模型与DELM,SSA-DELM,GA-DELM,ABC-DELM,WOA-DELM进行预测对比,结果表明,相比于其他算法改进模型和传统模型,tGSSA-DELM在预测精度、预测稳定性和工作效率中具有较大优势,具有更强的适用性。 展开更多
关键词 短期光伏发电功率预测 黄金正弦 自适应t分布 麻雀算法 深度极限学习机
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基于EG-SSMA-DELM的数控铣床刀具RUL预测研究
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作者 张天骁 谷艳玲 安文杰 《机电工程》 CAS 北大核心 2023年第9期1464-1470,共7页
在工件的加工过程中,刀具失效会造成工件报废和关键部件损坏等问题,为此,提出了一种基于精英反向学习与黄金正弦优化黏菌算法结合深度极限学习机(EG-SSMA-DELM)的刀具磨损剩余寿命预测模型。首先,在黏菌算法(SMA)中,采用精英反向学习(EO... 在工件的加工过程中,刀具失效会造成工件报废和关键部件损坏等问题,为此,提出了一种基于精英反向学习与黄金正弦优化黏菌算法结合深度极限学习机(EG-SSMA-DELM)的刀具磨损剩余寿命预测模型。首先,在黏菌算法(SMA)中,采用精英反向学习(EOBL)与黄金正弦(GSA)算法优化初始黏菌种群,提高了初始种群的多样性,改进了初始SMA搜索个体位置的更新方式,提高了算法的收敛速度与全局搜索能力,得到了最优参数;然后,利用改进的SMA算法,对深度极限学习机(DELM)中编码器的偏置与输入权重进行了联合优化,定义了不同数量的隐藏层神经元,利用ReLU激活函数对DELM的参数进行了理想排列;最后,根据最优参数,将投影特征输入DELM中进行了训练和预测,从而对刀具进行了剩余使用寿命预测。研究结果表明:相比于经典的深度极限学习机方法,EG-SSMA-DELM方法的均方根误差(RMSE)平均下降了19.60%,预测精度提高了16.00%;与其他深度学习算法相比,该算法模型具有更好的可行性、单调性和更强的鲁棒性。该算法模型对实际工程刀具磨损剩余寿命研究有一定的应用价值。 展开更多
关键词 剩余使用寿命 刀具寿命预测 精英反向学习 黄金正弦算法 黏菌算法 深度极限学习机
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基于改进深度极限学习机的光伏扩容用户识别方法
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作者 汤渊 吴裕宙 +2 位作者 苏盛 刘韵艺 王耀龙 《电力系统及其自动化学报》 CSCD 北大核心 2024年第5期59-68,共10页
为准确识别违规的分布式光伏扩容骗补用户,提出一种基于改进深度极限学习机的光伏扩容用户识别方法。首先利用同地区光伏发电出力具有相似性的特点,通过余弦相似度对参考电站和待测站点进行预处理;然后应用麻雀搜索算法SSA(sparrow sear... 为准确识别违规的分布式光伏扩容骗补用户,提出一种基于改进深度极限学习机的光伏扩容用户识别方法。首先利用同地区光伏发电出力具有相似性的特点,通过余弦相似度对参考电站和待测站点进行预处理;然后应用麻雀搜索算法SSA(sparrow search algorithm)对深度极限学习机DELM(deep extreme learning machine)的权值参数优化,用预处理的数据集训练SSA-DELM拟合模型,并根据光伏扩容的特性计算扩容系数。实验结果验证了所提方法对分布式光伏违规扩容用户识别的有效性。 展开更多
关键词 分布式光伏 违规扩容 深度极限学习机 麻雀搜索算法
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IoMT-Based Smart Healthcare of Elderly People Using Deep Extreme Learning Machine
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作者 Muath Jarrah Hussam Al Hamadi +1 位作者 Ahmed Abu-Khadrah Taher M.Ghazal 《Computers, Materials & Continua》 SCIE EI 2023年第7期19-33,共15页
The Internet of Medical Things(IoMT)enables digital devices to gather,infer,and broadcast health data via the cloud platform.The phenomenal growth of the IoMT is fueled by many factors,including the widespread and gro... The Internet of Medical Things(IoMT)enables digital devices to gather,infer,and broadcast health data via the cloud platform.The phenomenal growth of the IoMT is fueled by many factors,including the widespread and growing availability of wearables and the ever-decreasing cost of sensor-based technology.There is a growing interest in providing solutions for elderly people living assistance in a world where the population is rising rapidly.The IoMT is a novel reality transforming our daily lives.It can renovate modern healthcare by delivering a more personalized,protective,and collaborative approach to care.However,the current healthcare system for outdoor senior citizens faces new challenges.Traditional healthcare systems are inefficient and lack user-friendly technologies and interfaces appropriate for elderly people in an outdoor environment.Hence,in this research work,a IoMT based Smart Healthcare of Elderly people using Deep Extreme Learning Machine(SH-EDELM)is proposed to monitor the senior citizens’healthcare.The performance of the proposed SH-EDELM technique gives better results in terms of 0.9301 accuracy and 0.0699 miss rate,respectively. 展开更多
关键词 ICT ML FN delm SH-Edelm
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基于鲸鱼算法优化深度极限学习机的锂离子电池剩余使用寿命间接预测
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作者 郝锐 王海瑞 朱贵富 《化工自动化及仪表》 CAS 2023年第1期37-43,共7页
鉴于对锂离子电池直接预测剩余使用寿命(RUL)困难,而极限学习机预测效果不稳定的现状,提出基于等压降放电时间和深度极限学习机(DELM)相结合的间接预测方法。首先,在恒流放电过程中提取出表征电池性能退化的等压降放电时间,分析它与容... 鉴于对锂离子电池直接预测剩余使用寿命(RUL)困难,而极限学习机预测效果不稳定的现状,提出基于等压降放电时间和深度极限学习机(DELM)相结合的间接预测方法。首先,在恒流放电过程中提取出表征电池性能退化的等压降放电时间,分析它与容量间的相关程度并选之作为间接健康因子;其次,引入鲸鱼优化算法(WOA)优化深度极限学习机模型参数,构建锂离子电池RUL预测模型。用锂离子电池数据集中的B0005、B0007两个电池进行实验,结果表明:基于等压降放电时间的WOA-DELM模型预测方法相较于BP神经网络、DELM和PSO-DELM,能够更加准确地预测出锂离子电池的RUL,预测误差±5%,具有较好的预测精度和较快的收敛速度。 展开更多
关键词 WOA-delm预测模型 锂离子电池 寿命预测 间接健康因子 鲸鱼优化算法
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Project Assessment in Offshore Software Maintenance Outsourcing Using Deep Extreme Learning Machines
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作者 Atif Ikram Masita Abdul Jalil +6 位作者 Amir Bin Ngah Saqib Raza Ahmad Salman Khan Yasir Mahmood Nazri Kama Azri Azmi Assad Alzayed 《Computers, Materials & Continua》 SCIE EI 2023年第1期1871-1886,共16页
Software maintenance is the process of fixing,modifying,and improving software deliverables after they are delivered to the client.Clients can benefit from offshore software maintenance outsourcing(OSMO)in different w... Software maintenance is the process of fixing,modifying,and improving software deliverables after they are delivered to the client.Clients can benefit from offshore software maintenance outsourcing(OSMO)in different ways,including time savings,cost savings,and improving the software quality and value.One of the hardest challenges for the OSMO vendor is to choose a suitable project among several clients’projects.The goal of the current study is to recommend a machine learning-based decision support system that OSMO vendors can utilize to forecast or assess the project of OSMO clients.The projects belong to OSMO vendors,having offices in developing countries while providing services to developed countries.In the current study,Extreme Learning Machine’s(ELM’s)variant called Deep Extreme Learning Machines(DELMs)is used.A novel dataset consisting of 195 projects data is proposed to train the model and to evaluate the overall efficiency of the proposed model.The proposed DELM’s based model evaluations achieved 90.017%training accuracy having a value with 1.412×10^(-3) Root Mean Square Error(RMSE)and 85.772%testing accuracy with 1.569×10^(-3) RMSE with five DELMs hidden layers.The results express that the suggested model has gained a notable recognition rate in comparison to any previous studies.The current study also concludes DELMs as the most applicable and useful technique for OSMO client’s project assessment. 展开更多
关键词 Software outsourcing deep extreme learning machine(delm) machine learning(ML) extreme learning machine ASSESSMENT
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基于优化的深度极限学习机的柴油车NO_(x)排放预测
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作者 李勇志 胡磬遥 +1 位作者 任洪娟 黄成 《环境监测管理与技术》 CSCD 2023年第4期53-56,共4页
用麻雀搜索算法优化的深度极限学习机(SSA-DELM)构建柴油车NO_(x)排放预测模型,对柴油车低速、中速和高速状态下的NO_(x)排放进行预测,并将此模型性能与深度极限学习机(DELM)模型性能进行对比分析。结果表明:SSA-DELM模型的预测效果较好... 用麻雀搜索算法优化的深度极限学习机(SSA-DELM)构建柴油车NO_(x)排放预测模型,对柴油车低速、中速和高速状态下的NO_(x)排放进行预测,并将此模型性能与深度极限学习机(DELM)模型性能进行对比分析。结果表明:SSA-DELM模型的预测效果较好,在低速、中速、高速状态下该模型平均绝对百分比误差MAPE分别为0.0610、0.0449、0.0391;在低速、中速、高速状态下SSA-DELM模型的性能评价指标比DELM模型性能评价指标分别优约23%、44%、11%。 展开更多
关键词 NO_(x) 重型柴油车 麻雀搜索算法 深度极限学习机 排放预测
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基于表征学习的模拟电路故障诊断 被引量:3
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作者 谈恩民 王晨 《计算机工程与科学》 CSCD 北大核心 2022年第1期27-35,共9页
针对模拟电路故障诊断中故障信息的多特征、高噪声以及故障诊断时间较长的问题,提出了一种基于H-DELM的模拟电路故障诊断模型。该模型的架构单元为双随机隐藏层的深度极限学习机DELM-AE,2个随机隐藏层用于编码特征,1个输出层用于解码特... 针对模拟电路故障诊断中故障信息的多特征、高噪声以及故障诊断时间较长的问题,提出了一种基于H-DELM的模拟电路故障诊断模型。该模型的架构单元为双随机隐藏层的深度极限学习机DELM-AE,2个随机隐藏层用于编码特征,1个输出层用于解码特征。将DELM-AE以分层结构堆叠构建H-DELM模型,由于DELM-AE可以进行特征表示,而且输出与原始输入信息相同,因此H-DELM可以尽可能多地复制原始输入数据,进而可以学习到更具表现力和紧凑性的特征。最终通过四运放双二次高通滤波器和更复杂的二级四运放双二阶低通滤波器2个电路进行验证。实验结果表明了该模型在模拟电路故障诊断上的可行性;与其他模型的比较表明该模型的鲁棒性较强,分类速度可以达到1 s左右,故障分类准确率可以达到100%。 展开更多
关键词 模拟电路 故障诊断 特征提取 H-delm模型 自动编码器 特征表示
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基于深度极限学习机的柴油机尾气排放预测 被引量:7
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作者 吐尔逊·买买提 赵梦佳 +1 位作者 宁成博 孔庆好 《科学技术与工程》 北大核心 2021年第36期15646-15654,共9页
准确预测拖拉机等柴油机械实际工况污染物排放在排放清单建立和区域污染物排放控制方面具有重要意义。基于拖拉机不同运行状态下发动机转速、油耗、燃烧比、CO、HC、NO_(x)和PM实测数据作为数据源,建立深度极限学习机(deep extreme lear... 准确预测拖拉机等柴油机械实际工况污染物排放在排放清单建立和区域污染物排放控制方面具有重要意义。基于拖拉机不同运行状态下发动机转速、油耗、燃烧比、CO、HC、NO_(x)和PM实测数据作为数据源,建立深度极限学习机(deep extreme learning machine,DELM)的预测模型,并对拖拉机怠速、行走和旋耕等基本工况下的污染物排放进行预测。为进一步评估DELM预测模型的适应性,将其与支持向量机(support vector machine,SVM)和反向传播(back propagation,BP)神经网络模型进行对比分析。结果表明:DELM模型在预测排放时间序列方面具有一定优势,其预测拖拉机在怠速、行走和旋耕3种状态下的NO_(x)、HC、CO和PM排放均方根误差均值分别为5.269×10^(-5)、5.195×10^(-5)、5.135×10^(-5)和2.795×10^(-5)。DELM模型与SVM和BP对比发现,DELM模型在鲁棒性以及适应性方面的优势显著。DELM方法的较高的准确度和泛化性,为基于发动机状态数据预测移动源尾气排放提供思路和方法。 展开更多
关键词 柴油机 深度极限学习机(delm) 不同工况 排放预测
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Intelligent Forecasting Model of COVID-19 Novel Coronavirus Outbreak Empowered with Deep Extreme Learning Machine 被引量:1
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作者 Muhammad Adnan Khan Sagheer Abbas +2 位作者 Khalid Masood Khan Mohammed AAl Ghamdi Abdur Rehman 《Computers, Materials & Continua》 SCIE EI 2020年第9期1329-1342,共14页
An epidemic is a quick and widespread disease that threatens many lives and damages the economy.The epidemic lifetime should be accurate so that timely and remedial steps are determined.These include the closing of bo... An epidemic is a quick and widespread disease that threatens many lives and damages the economy.The epidemic lifetime should be accurate so that timely and remedial steps are determined.These include the closing of borders schools,suspension of community and commuting services.The forecast of an outbreak effectively is a very necessary but difficult task.A predictive model that provides the best possible forecast is a great challenge for machine learning with only a few samples of training available.This work proposes and examines a prediction model based on a deep extreme learning machine(DELM).This methodology is used to carry out an experiment based on the recent Wuhan coronavirus outbreak.An optimized prediction model that has been developed,namely DELM,is demonstrated to be able to make a prediction that is fairly best.The results show that the new methodology is useful in developing an appropriate forecast when the samples are far from abundant during the critical period of the disease.During the investigation,it is shown that the proposed approach has the highest accuracy rate of 97.59%with 70%of training,30%of test and validation.Simulation results validate the prediction effectiveness of the proposed scheme. 展开更多
关键词 CORONAVIRUS nCoV delm Mis rate SERS-CoV WHO COVID-19
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Enhance Intrusion Detection in Computer Networks Based on Deep Extreme Learning Machine 被引量:1
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作者 Muhammad Adnan Khan Abdur Rehman +2 位作者 Khalid Masood Khan Mohammed A.Al Ghamdi Sultan H.Almotiri 《Computers, Materials & Continua》 SCIE EI 2021年第1期467-480,共14页
Networks provide a significant function in everyday life,and cybersecurity therefore developed a critical field of study.The Intrusion detection system(IDS)becoming an essential information protection strategy that tr... Networks provide a significant function in everyday life,and cybersecurity therefore developed a critical field of study.The Intrusion detection system(IDS)becoming an essential information protection strategy that tracks the situation of the software and hardware operating on the network.Notwithstanding advancements of growth,current intrusion detection systems also experience difficulties in enhancing detection precision,growing false alarm levels and identifying suspicious activities.In order to address above mentioned issues,several researchers concentrated on designing intrusion detection systems that rely on machine learning approaches.Machine learning models will accurately identify the underlying variations among regular information and irregular information with incredible efficiency.Artificial intelligence,particularly machine learning methods can be used to develop an intelligent intrusion detection framework.There in this article in order to achieve this objective,we propose an intrusion detection system focused on a Deep extreme learning machine(DELM)which first establishes the assessment of safety features that lead to their prominence and then constructs an adaptive intrusion detection system focusing on the important features.In the moment,we researched the viability of our suggested DELMbased intrusion detection system by conducting dataset assessments and evaluating the performance factors to validate the system reliability.The experimental results illustrate that the suggested framework outclasses traditional algorithms.In fact,the suggested framework is not only of interest to scientific research but also of functional importance. 展开更多
关键词 Intrusion detection system delm network security machine learning
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Enabling Smart Cities with Cognition Based Intelligent Route Decision in Vehicles Empowered with Deep Extreme Learning Machine
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作者 Dildar Hussain Muhammad Adnan Khan +4 位作者 Sagheer Abbas Rizwan Ali Naqvi Muhammad Faheem Mushtaq Abdur Rehman Afrozah Nadeem 《Computers, Materials & Continua》 SCIE EI 2021年第1期141-156,共16页
The fast-paced growth of artificial intelligence provides unparalleled opportunities to improve the efficiency of various industries,including the transportation sector.The worldwide transport departments face many ob... The fast-paced growth of artificial intelligence provides unparalleled opportunities to improve the efficiency of various industries,including the transportation sector.The worldwide transport departments face many obstacles following the implementation and integration of different vehicle features.One of these tasks is to ensure that vehicles are autonomous,intelligent and able to grow their repository of information.Machine learning has recently been implemented in wireless networks,as a major artificial intelligence branch,to solve historically challenging problems through a data-driven approach.In this article,we discuss recent progress of applying machine learning into vehicle networks for intelligent route decision and try to focus on this emerging field.Deep Extreme Learning Machine(DELM)framework is introduced in this article to be incorporated in vehicles so they can take human-like assessments.The present GPS compatibility issues make it difficult for vehicles to take real-time decisions under certain conditions.It leads to the concept of vehicle controller making self-decisions.The proposed DELM based system for self-intelligent vehicle decision makes use of the cognitive memory to store route observations.This overcomes inadequacy of the current in-vehicle route-finding technology and its support.All the relevant route-related information for the ride will be provided to the user based on its availability.Using the DELM method,a high degree of precision in smart decision taking with a minimal error rate is obtained.During investigation,it has been observed that proposed framework has the highest accuracy rate with 70%of training(1435 samples)and 30%of validation(612 samples).Simulation results validate the intelligent prediction of the proposed method with 98.88%,98.2%accuracy during training and validation respectively. 展开更多
关键词 delm ANN IoT FEEDFORWARD route decision prediction smart city
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Intelligent Software-Defined Network for Cognitive Routing Optimization Using Deep Extreme Learning Machine Approach
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作者 Fahd Alhaidari Sultan H.Almotiri +5 位作者 Mohammed A.Al Ghamdi Muhammad Adnan Khan Abdur Rehman Sagheer Abbas Khalid Masood Khan Atta-ur-Rahman 《Computers, Materials & Continua》 SCIE EI 2021年第4期1269-1285,共17页
In recent years,the infrastructure,instruments,and resources of network systems are becoming more complex and heterogeneous,with the rapid development of current internet and mobile communication technologies.In order... In recent years,the infrastructure,instruments,and resources of network systems are becoming more complex and heterogeneous,with the rapid development of current internet and mobile communication technologies.In order to efficaciously prepare,control,hold and optimize networking systems,greater intelligence needs to be deployed.However,due to the inherently dispensed characteristic of conventional networks,Machine Learning(ML)techniques are hard to implement and deployed to govern and operate networks.Software-Defined Networking(SDN)brings us new possibilities to offer intelligence in the networks.SDN’s characteristics(e.g.,logically centralized control,global network view,software-based site visitor analysis,and dynamic updating of forwarding rules)make it simpler to apply machine learning strategies.Various perspectives of fiber-optic communications including fiber nonlinearity coverage,optical performance checking,cognitive shortcoming detection/anticipation,and arranging and improvement of softwaredefined networks are examined in Machine Learning(ML)applications.This research paper has presented an imaginative framework concept called Intelligent Software Defined Network(ISDN)for Cognitive Routing Optimization(CRO)using Deep Extreme Learning Machine(DELM)approach(ISDN-CRO-DELM)in light of the new challenges in the development and operation of communication systems,and capturing motivation from how living creatures deal with difficulty and usability.The proposed methodology develops around the planned applications of progressive DELM methods and,specifically,probabilistic generative models for framework wide learning,demonstrating,improvement,and information description.Furthermore,ISDN-CRO-DELM,suggest to integrate this learning framework with the ISDN for CRO and reconfiguration approaches at the system level.MATLAB 2019a is used for DELM simulation and superior results show the effectiveness of the proposed framework. 展开更多
关键词 SDN delm machine learning COGNITION
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A Real-Time Sequential Deep Extreme Learning Machine Cybersecurity Intrusion Detection System
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作者 Amir Haider Muhammad Adnan Khan +2 位作者 Abdur Rehman Muhib Ur Rahman Hyung Seok Kim 《Computers, Materials & Continua》 SCIE EI 2021年第2期1785-1798,共14页
In recent years,cybersecurity has attracted significant interest due to the rapid growth of the Internet of Things(IoT)and the widespread development of computer infrastructure and systems.It is thus becoming particul... In recent years,cybersecurity has attracted significant interest due to the rapid growth of the Internet of Things(IoT)and the widespread development of computer infrastructure and systems.It is thus becoming particularly necessary to identify cyber-attacks or irregularities in the system and develop an efficient intrusion detection framework that is integral to security.Researchers have worked on developing intrusion detection models that depend on machine learning(ML)methods to address these security problems.An intelligent intrusion detection device powered by data can exploit artificial intelligence(AI),and especially ML,techniques.Accordingly,we propose in this article an intrusion detection model based on a Real-Time Sequential Deep Extreme Learning Machine Cybersecurity Intrusion Detection System(RTS-DELM-CSIDS)security model.The proposed model initially determines the rating of security aspects contributing to their significance and then develops a comprehensive intrusion detection framework focused on the essential characteristics.Furthermore,we investigated the feasibility of our proposed RTS-DELM-CSIDS framework by performing dataset evaluations and calculating accuracy parameters to validate.The experimental findings demonstrate that the RTS-DELM-CSIDS framework outperforms conventional algorithms.Furthermore,the proposed approach has not only research significance but also practical significance. 展开更多
关键词 SECURITY delm intrusion detection system machine learning
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基于MoS_(2)薄膜耦合波导的高品质因数传感特性研究
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作者 陈颖 王建坤 +3 位作者 丁志欣 李美洁 赵蒙 赵国廷 《中国激光》 EI CAS CSCD 北大核心 2024年第2期186-194,共9页
在波导耦合表面等离子体共振传感器结构中引入MoS_(2)材料,提出了一种全介质MoS_(2)薄膜混合耦合波导结构传感器,该结构使得低品质因数(FOM)波导中产生了频域较宽的宽共振,而高FOM波导中产生了频域较窄的窄共振,实现了双波导耦合,进而... 在波导耦合表面等离子体共振传感器结构中引入MoS_(2)材料,提出了一种全介质MoS_(2)薄膜混合耦合波导结构传感器,该结构使得低品质因数(FOM)波导中产生了频域较宽的宽共振,而高FOM波导中产生了频域较窄的窄共振,实现了双波导耦合,进而产生了Fano共振。对传感结构进行了数值模拟与分析研究,探究了MoS_(2)层数及各结构参数对传感性能的影响,并依据其影响将两波导厚度、相邻两层介质材料厚度、MoS_(2)层数作为输入参数,将FOM值作为输出参数,建立了基于深度极限学习机的优化算法。利用优化算法对权值参数进行优化,对比不同优化算法对光谱的优化能力,最终得到了GWO-DELM预测模型。结果表明,Fano形状可以通过改变结构参数进行动态调控。在最佳条件下,经过优化算法优化后的Fano共振的FOM值高达50000。 展开更多
关键词 传感器 Fano共振 MoS_(2)薄膜 双波导耦合 GWO-delm
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