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ZleepNet: A Deep Convolutional Neural Network Model for Predicting Sleep Apnea Using SpO2 Signal 基于SpO2信号预测睡眠呼吸暂停的深度卷积神经网络模型
Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-09-19 DOI: 10.1155/2023/8888004
Hnin Thiri Chaw, Thossaporn Kamolphiwong, Sinchai Kamolphiwong, Krongthong Tawaranurak, Rattachai Wongtanawijit
Sleep apnea is one of the most common sleep disorders in the world. It is a common problem for patients to suffer from sleep disturbances. In this paper, we propose a deep convolutional neural network (CNN) model based on the oxygen saturation (SpO2) signal from a smart sensor. This is the reason why we called ZleepNet a network for sleep apnea detection. The proposed model includes three convolutional layers, which include ReLu activation function, 2 dense layers, and one dropout layer for predicting sleep apnea. In this proposed model, the use of signals for detecting the sleep apnea can be reduced from 25 sensors to 1 sensor. We conducted experiments to evaluate the performance of the proposed CNN using real patient data and compared them with traditional machine learning methods such as least discriminant analysis (LDA) and support vector machine (SVM), baggy representation tree, and artificial neural network (ANN) on publicly available sleep datasets using the same parameter setting. The results show that the proposed model outperformed the other methods with the accuracy of 91.30% with the split rate of 0.2% in which the training data are 20% and testing data are 80%. The accuracy of the proposed CNN is 90.33% when compared with the LDA which achieved 86.5% accuracy with the split rate of 0.5% in which training data are 50% and testing data are 50%. It achieved 91.56% accuracy when compared with the support vector machine (SVM) in which training data are 70% and testing data are 30%. The achieved accuracy of the proposed CNN is 91.89% when compared with bagging representation tree in which training data are 90% and testing data are 10%. The accuracy of the proposed CNN is 91.30% in which training data are 83% and testing data are 17% when compared with artificial neural networks (ANN).
睡眠呼吸暂停是世界上最常见的睡眠障碍之一。睡眠障碍是病人普遍存在的问题。在本文中,我们提出了一个基于智能传感器的氧饱和度(SpO2)信号的深度卷积神经网络(CNN)模型。这就是为什么我们称ZleepNet为睡眠呼吸暂停检测网络的原因。该模型包括三个卷积层,其中包括ReLu激活函数,2个密集层和一个用于预测睡眠呼吸暂停的dropout层。在该模型中,用于检测睡眠呼吸暂停的信号可以从25个传感器减少到1个传感器。我们使用真实患者数据进行了实验,以评估所提出的CNN的性能,并将其与传统的机器学习方法(如最小判别分析(LDA)和支持向量机(SVM), baggy表示树和人工神经网络(ANN))在公开可用的睡眠数据集上使用相同的参数设置进行了比较。结果表明,在训练数据为20%,测试数据为80%的分割率为0.2%的情况下,该模型的准确率为91.30%,优于其他方法。在训练数据为50%,测试数据为50%的分割率为0.5%的情况下,LDA的准确率为86.5%,而本文提出的CNN准确率为90.33%。与训练数据占70%、测试数据占30%的支持向量机(SVM)相比,准确率达到了91.56%。与训练数据占90%、测试数据占10%的bagging表示树相比,本文提出的CNN的准确率为91.89%。与人工神经网络(ANN)相比,本文提出的CNN准确率为91.30%,其中训练数据准确率为83%,测试数据准确率为17%。
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引用次数: 0
An Accurate and Fast Method for Improving ADC Nonlinearity 一种精确、快速改善ADC非线性的方法
Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2023-09-15 DOI: 10.1155/2023/8899666
Mohammed Abdulmahdi Mohammedali, Qais Al-Gayem
Errors in analog-to-digital conversion (ADC) occur due to internal links or other electronic parts; faults that may occur during code conversion cannot be overlooked because signal digitalisation demands a large dynamic range and high resolution. This paper presents a new and accurate self-test method to compensate for one of the most effective errors of ADC because of its effect, which may result in a missing code, which is a differential nonlinear (DNL) of a 10-bit SAR-ADC. The proposed method includes three stages: DNL error modelling for nonideal system implementation, detection, and correction. To evaluate the proposed technique, sinusoidal and sawtooth signals are applied as analog inputs to the proposed system. Adaptivity, speed, and accuracy are the main motivations of this work, which provide high accuracy compared to other techniques, up to 9.6 ENOB and 59.2 SNR with sawtooth signal and 9.5 ENOB and 59.2 SNR with sinewave signals.
模数转换(ADC)由于内部链接或其他电子部件而发生错误;由于信号数字化要求大动态范围和高分辨率,码转换过程中可能出现的故障不容忽视。本文提出了一种新的、精确的自测试方法来补偿ADC由于其影响而产生的最有效误差之一,即10位SAR-ADC的微分非线性(DNL)缺失码。该方法包括三个阶段:非理想系统实现的DNL误差建模、检测和校正。为了评估所提出的技术,正弦和锯齿信号作为模拟输入应用于所提出的系统。自适应、速度和精度是这项工作的主要动机,与其他技术相比,它提供了很高的精度,锯齿波信号高达9.6 ENOB和59.2信噪比,正弦波信号高达9.5 ENOB和59.2信噪比。
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引用次数: 0
An Effective Hybrid Algorithm Based on Particle Swarm Optimization with Migration Method for Solving the Multiskill Resource-Constrained Project Scheduling Problem 基于粒子群优化和迁移法的混合算法求解多技能资源约束项目调度问题
IF 2.9 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2022-02-15 DOI: 10.1155/2022/6230145
Huu Dang Quoc, Loc Nguyen The, Cuong Nguyen Doan
The paper proposed a new algorithm to solve the Multiskill Resource-Constrained Project Scheduling Problem (MS-RCPSP), a combinational optimization problem proved in NP-Hard classification, so it cannot get an optimal solution in polynomial time. The NP-Hard problems can be solved using metaheuristic methods to evolve the population over many generations, thereby finding approximate solutions. However, most metaheuristics have a weakness that can be dropping into local extreme after a number of evolution generations. The new algorithm proposed in this paper will resolve that by detecting local extremes and escaping that by moving the population to new space. That is executed using the Migration technique combined with the Particle Swarm Optimization (PSO) method. The new algorithm is called M-PSO. The experiments were conducted with the iMOPSE benchmark dataset and showed that the M-PSO was more practical than the early algorithms.
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引用次数: 5
Boolean Algebra of Soft Q-Sets in Soft Topological Spaces 软拓扑空间中软q集的布尔代数
IF 2.9 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2022-01-01 DOI: 10.1155/2022/5200590
S. Ghour
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引用次数: 0
Research on Simulink/Fluent Collaborative Simulation Zooming of Marine Gas Turbine 船用燃气轮机Simulink/Fluent协同仿真变焦研究
IF 2.9 Q3 COMPUTER SCIENCE, ARTIFICIAL INTELLIGENCE Pub Date : 2017-03-02 DOI: 10.1155/2017/8324810
Wang Zhitao, Li Jian, Li Tielei, Liu Shuying
Based on the detailed analysis of collaborative running interface of Simulink/Fluent, a system simulation for the rated working condition as well as variable working condition of marine gas turbine has been achieved, which can improve the simulation efficiency of marine gas turbine by developing simulation model of combustor with Fluent and simulation models of other components with Simulink. The result shows that the Simulink/Fluent collaborative simulation zooming can make the inner working conditions of combustor be observed specifically, based on the overall performance matching analysis; thus an effective technical means for the structural optimization design of combustor has been provided.
在对Simulink/Fluent协同运行界面进行详细分析的基础上,实现了船用燃气轮机额定工况和变工况的系统仿真,通过Fluent建立燃烧室仿真模型,Simulink建立其他部件仿真模型,提高了船用燃气轮机的仿真效率。结果表明,在综合性能匹配分析的基础上,Simulink/Fluent协同仿真变焦可以对燃烧室内部工况进行具体观察;从而为燃烧室结构优化设计提供了有效的技术手段。
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引用次数: 3
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Applied Computational Intelligence and Soft Computing
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