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2020 IEEE 8th International Conference on Computer Science and Network Technology (ICCSNT)最新文献

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Improved NSGA2 Algorithm to Solve Multi-Objective Flexible Job Shop Scheduling Problem 求解多目标柔性作业车间调度问题的改进NSGA2算法
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9304984
Xu Liang, Yifan Liu, Ming Huang
The NSGA2 algorithm is one of the effective methods to solve multi-objective flexible job shop scheduling problems (MOFJSP). An improved NSGA2 algorithm is proposed to solve the MOFJSP model that aims to minimize the maximum completion time, the total workload of all machines, the total workshop carbon emissions, the total workshop energy consumption, and the delivery time. Firstly, the improved algorithm performs neighborhood search and cross-mutation operation respectively according to the nondominated ranking level and randomly generated probability of individuals to balance their local search and global search ability of the algorithm. Then, in order to further enrich the diversity of the population and improve the solving ability of the improved algorithm, an elite retention combined with random retention is proposed to retain the parent individuals. At last, the experiment proves the effectiveness of the improved NSGA2 algorithm for solving multi-objective flexible job shop scheduling problems.
NSGA2算法是求解多目标柔性作业车间调度问题(MOFJSP)的有效方法之一。提出了一种改进的NSGA2算法来求解以最大完工时间、所有机器总工作量、车间总碳排放、车间总能耗和交货时间最小为目标的MOFJSP模型。首先,改进算法根据个体的非支配排序水平和随机生成概率分别进行邻域搜索和交叉突变操作,平衡算法的局部搜索能力和全局搜索能力;然后,为了进一步丰富种群的多样性,提高改进算法的求解能力,提出了一种精英保留与随机保留相结合的方法来保留亲本个体。最后,通过实验验证了改进的NSGA2算法对于求解多目标柔性作业车间调度问题的有效性。
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引用次数: 1
Research and Improvement of Encrypted Traffic Classification Based on Convolutional Neural Network 基于卷积神经网络的加密流量分类研究与改进
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9305018
Yan-sen Zhou, Jianquan Cui
Aiming at the problems of low recognition rate and long training time of deep convolution neural network Alexnet in encrypted traffic classification, some improvement measures are put forward for the classical Alexnet network, mainly including the introduction of multi-scale convolution, deconvolution operation and batch standardization, which can extract more comprehensive features and reduce convolution kernel parameters. The performance of the improved Alexnet convolutional neural network is tested by encrypting the traffic dataset. The test results show that the recognition accuracy and precision of the improved model on the selected test set are 83.9% and 84% respectively, which are about 7.2% and 8% higher than those of the classical model. The improved Alex net model has a certain improvement in the performance of network encryption traffic classification recognition.
针对深度卷积神经网络Alexnet在加密流量分类中识别率低、训练时间长等问题,对经典Alexnet网络提出了一些改进措施,主要包括引入多尺度卷积、反卷积运算和批量标准化,可以提取更全面的特征,减少卷积核参数。通过对交通数据集进行加密,对改进后的Alexnet卷积神经网络的性能进行了测试。测试结果表明,改进模型在所选测试集上的识别准确率和精度分别为83.9%和84%,比经典模型分别提高了7.2%和8%左右。改进的Alex网络模型对网络加密流量分类识别的性能有一定的提高。
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引用次数: 3
Research on Low-carbon Application of Improved Non-dominated Sorting Genetic Algorithm 改进非支配排序遗传算法的低碳应用研究
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9305009
Liang Xu, Chen Jiabao, Huang Ming
An improved genetic algorithm with elitist strategy (INSGA-II) is proposed to solve the multi-objective problem for low-carbon job shop scheduling. In this paper, a heuristic algorithm is introduced in the initial population stage, and the weight aggregation method is used to constrain the total completion time and carbon emissions. The elite strategy is improved by using simulated annealing method to replace the son with the parent to improve the quality of the replacement population. The improved non dominated sorting genetic algorithm with elitist strategy can obtain Pareto optimal solution set faster and obtain higher population diversity in the initial stage. The experimental results show that the convergence speed and diversity of the algorithm have been improved to a certain extent. On the basis of considering the machine load, the maximum completion time is minimized. When two machines with different carbon emissions in the same processing time are processed, the machine with low carbon emission will be selected optimally.
针对低碳作业车间调度中的多目标问题,提出了一种改进的精英策略遗传算法(INSGA-II)。本文在初始种群阶段引入启发式算法,并采用权重聚集法约束总完成时间和碳排放。利用模拟退火方法对精英策略进行改进,以父代子,提高替代群体的质量。采用精英策略的改进非支配排序遗传算法可以更快地获得Pareto最优解集,并在初始阶段获得较高的种群多样性。实验结果表明,该算法在一定程度上提高了收敛速度和多样性。在考虑机器负荷的基础上,最小化最大完成时间。当加工同一加工时间内碳排放量不同的两台机器时,将最优选择碳排放量低的机器。
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引用次数: 0
Prediction and Application of Slot Attributes In Contract Display Advertisement 合同展示广告中槽位属性的预测与应用
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9304986
Hanmin Wang, Xinglu Liu, Wai Kin Victor Chan
In this paper, we propose a method that implicitly contains multiple features to describe the relationship between two variables, which was referred to as trend prediction. This method takes into account the relationship between the slot page view and multiple features. The data of different advertising slots are constructed by predicting methods such as tree model and neural network with category feature densification by auto-encoder model. To reduce the smooth time in the prediction curve, we take the logarithm function as a priori to regress the predicted curve. Finally, compared with our previous prediction model, the trend prediction model effectively improves the overall page view under the unconstrained mixed-integer programming model.
在本文中,我们提出了一种隐式包含多个特征来描述两个变量之间关系的方法,称为趋势预测。该方法考虑了槽页视图与多个特征之间的关系。采用树模型和神经网络等预测方法构建不同广告时段的数据,并采用自编码器模型进行分类特征密度化。为了减少预测曲线的平滑时间,我们采用对数函数作为先验对预测曲线进行回归。最后,与我们之前的预测模型相比,趋势预测模型有效地提高了无约束混合整数规划模型下的整体页面浏览量。
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引用次数: 0
Research on Truck AGV Control System 汽车AGV控制系统研究
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9305011
Qiang Xu, C. Ai, Dunyang Geng, G. Ren, Zhiyong Wang
In order to meet the needs of modern factories for low-speed and heavy-duty cross-workshop transporting truck AGVs that operate outdoors, research on the truck AGV control system has been carried out from both hardware systems and software algorithms. STM32F407VET6 is selected as the main controller of the system, and a simplified model of the truck AGV is established. The pure pursuit algorithm is used for path tracking to control the vehicle to travel along the desired path. After actual vehicle experiments, under the control system of this article, the lateral tracking deviation of the vehicle after reaching the destination is no more than ±25mm, and the longitudinal deviation is no more than ±19mm, which shows that the control system of this article has good stability and repeat positioning accuracy; When the initial position has a lateral deviation of 1m from the desired path, after the driving distance exceeds 3.5m, the vehicle can be controlled to quickly and accurately converge to the desired path; at the same time, it also has a better tracking effect for more complex continuous curves. It can meet the motion control requirements of automatic transporting trucks operating on complex outdoor routes, which is of great significance for realizing factory handling automation and intelligence.
为了满足现代工厂对低速、重型、跨车间、户外作业的载货汽车AGV的需求,从硬件系统和软件算法两方面对载货汽车AGV控制系统进行了研究。选择STM32F407VET6作为系统的主控制器,建立了载重AGV的简化模型。路径跟踪采用纯追踪算法,控制车辆沿期望路径行驶。经过实际车辆实验,在本文控制系统下,车辆到达目的地后的横向跟踪偏差不大于±25mm,纵向偏差不大于±19mm,表明本文控制系统具有良好的稳定性和重复定位精度;当初始位置与期望路径横向偏差1m时,行驶距离超过3.5m后,可控制车辆快速准确收敛到期望路径;同时对更复杂的连续曲线也有较好的跟踪效果。能够满足在室外复杂路线上运行的自动运输卡车的运动控制要求,对实现工厂搬运自动化、智能化具有重要意义。
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引用次数: 1
Grounding Pile Detection System based on Deep Learning 基于深度学习的接地桩检测系统
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9304982
Jun Zhang, Miao Jin, Zhiwei Guo, Jian-xing Li, Tianfu Huang, Xiwen Chen, Zhuo Chen, Bing Lu, Wei Zhou, Zijuan Guo
The safe and reliable power supply provided by State Grid gives convenience for our life. At the same time, it also plays a central role in the construction and development of country. However, the working environment of State Grid is under high voltage. In order to prevent personal electric shock, damage equipment and lines, prevent fire and lightning, prevent electrostatic damage and ensure the power system operation, the staff must install grounding piles according to the power operation specification. To tackle this problem, this paper proposes a grounding pile detection system based on deep learning network. First, cameras can acquire images of these monitored areas in real time. Then, these images are transmitted to the grounding pile detection system for detection. A warning will be given if it is found that workers have not installed the grounding piles in the monitored areas in accordance with the specifications. At present, there is no research on grounding pile detection. So we created our own dataset. Through experiments, our system achieves 92.00% accuracy, 97.50% accuracy and 13.5% false alarm rate in our dataset.
国家电网安全可靠的供电给我们的生活带来了便利。同时,它在国家的建设和发展中也起着核心作用。然而,国家电网的工作环境处于高压下。为防止人身触电、损坏设备和线路、防止火灾和雷电、防止静电伤害,保证电力系统正常运行,工作人员必须按照电力操作规范安装接地桩。针对这一问题,本文提出了一种基于深度学习网络的接地桩检测系统。首先,摄像头可以实时获取这些监控区域的图像。然后将这些图像传输到接地桩检测系统进行检测。如果发现工人没有按照规范在监控区域内安装接地桩,将给予警告。目前还没有针对接地桩检测的研究。所以我们创建了自己的数据集。通过实验,我们的系统在我们的数据集上达到了92.00%的准确率,97.50%的准确率和13.5%的虚警率。
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引用次数: 0
RFID Network Planning for Flexible Manufacturing Workshop with Multiple Coverage Requirements 多覆盖柔性制造车间RFID网络规划
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9305001
Lihui Wu, Junfei Ren, Yuansheng Li, Zhengzheng Dai, Zhongwei Zhang, Zhaoyun Wu
Flexible manufacturing workshops (FMWs) are important part of modern manufacturing enterprises. An optimized layout of radio frequency identifications (RFIDs) in an FMW is of great significance to improve information perception quality and reduce RFID deployment cost. Therefore, the RFID network planning for an FMW is studied in this paper. Firstly, three common coverage requirements are analyzed, and a RFID reader radiation model and an FMW discrete grids model are constructed. Secondly, a 0–1 integer programming-based RFID network planning model is established with the optimization objectives of the RFID deployment cost, reader interference, and reading efficiency. Thirdly, a hierarchical clustering and gradient descent-based network planning approach is proposed to solve the network planning model. An FMW case in a flexible manufacturing enterprise is taken to verify the RFID network planning model and the hierarchical clustering approach. The results show that the proposed model and approach are effective.
柔性制造车间是现代制造企业的重要组成部分。射频识别(RFID)在FMW中的优化布局对提高信息感知质量和降低RFID部署成本具有重要意义。因此,本文对FMW无线射频识别网络规划进行了研究。首先,分析了三种常见的覆盖需求,构建了RFID读写器辐射模型和FMW离散网格模型。其次,以RFID部署成本、读写器干扰和读取效率为优化目标,建立了基于0-1整数规划的RFID网络规划模型;第三,提出了一种基于分层聚类和梯度下降的网络规划方法来求解网络规划模型。以某柔性制造企业为例,对RFID网络规划模型和分层聚类方法进行了验证。结果表明,所提出的模型和方法是有效的。
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引用次数: 1
Characterize the DRAM with FPGA 用FPGA对DRAM进行表征
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9304999
Maosong Ma, Xin-wang Chen, Jianbin Liu
Most DRAMs are tested with ATE at laboratory, or SOC at real system environment. ATE is flexible enough to characterize almost all DRAM features, but the price is very high. SOC is low cost, however most times the memory controller features are not open to users. In this paper, FPGA-based DRAM test solutions are surveyed. The study shows now FPGA can test many DRAM internal parameters with the advanced FPGA features. And the flexibility and programmability allow user to fully understand the DRAM characteristics.
大多数dram都是在实验室进行ATE测试,或在实际系统环境中进行SOC测试。ATE具有足够的灵活性,可以表征几乎所有的DRAM特性,但价格非常高。SOC是低成本的,但大多数时候内存控制器的功能是不开放给用户。本文综述了基于fpga的DRAM测试解决方案。研究表明,FPGA具有先进的FPGA特性,可以测试多种DRAM内部参数。其灵活性和可编程性使用户能够充分了解DRAM的特性。
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引用次数: 1
Depth Map Restoration Method based on Improved Bilateral Filtering for Integral Imaging 基于改进双侧滤波的积分成像深度图恢复方法
Pub Date : 2020-11-20 DOI: 10.1109/ICCSNT50940.2020.9305006
Yuejianan Gu, Y. Piao, Ying Wang, Miaomiao Xu, Che Liu
In order to use a depth camera to simplify the acquisition process of integral imaging, this paper proposes a depth map restoration algorithm combining pixel filling and improved joint bilateral filtering(DIJBF). The depth image collected by the depth camera has the problems of background noise and holes in the foreground and background of the object. Firstly, the background filling method or the neighborhood value filling method is adopted to complete the preliminary restoration of the large edge void area according to the situation, and then combined with the improved joint bilateral filtering algorithm that adds the depth image depth value similarity factor to optimize the secondary restoration of the preliminary restoration depth map. After the depth image is restored and optimized, the contour of the three-dimensional object is clear and the edge is smooth. Combined with the color image, a high-quality elemental image array can be subsequently generated for the integral imaging display system.
为了利用深度相机简化积分成像的采集过程,本文提出了一种结合像素填充和改进联合双边滤波(DIJBF)的深度图恢复算法。深度相机采集的深度图像存在背景噪声和目标前景和背景存在孔洞等问题。首先根据情况采用背景填充法或邻域值填充法完成大边缘空洞区域的初步恢复,然后结合改进的联合双边滤波算法,加入深度图像深度值相似因子,对初步恢复深度图的二次恢复进行优化。深度图像经过恢复优化后,三维物体轮廓清晰,边缘光滑。与彩色图像相结合,随后可为集成成像显示系统生成高质量的元素图像阵列。
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引用次数: 0
Calculation of Electric Field and Temperature of Overhead Transmission Lines with Covered Conductors 有盖架空输电线路电场和温度的计算
Pub Date : 2020-11-20 DOI: 10.1109/iccsnt50940.2020.9305014
Zhenguang Liang, Yuze Jiang
Due to advantages of increase of safety and reduction of short circuit, overhead transmission lines with covered conductors have spread gradually. Analytical expressions of electric field to overhead transmission lines with covered conductors are presented. Calculation methods of allowable current and temperature to covered conductors are presented. Calculations of electric field and temperature of overhead lines with bare and covered conductors are taken. Results show differences of electric field and temperature to overhead lines with bare conductors and covered conductors.
架空输电线路由于具有提高安全性和减少短路的优点,逐渐得到推广。给出了有盖架空输电线路电场的解析表达式。给出了屏蔽导体允许电流和允许温度的计算方法。对裸露导线和有盖导线架空线的电场和温度进行了计算。结果表明,裸露导线和遮盖导线架空线路的电场和温度存在差异。
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引用次数: 0
期刊
2020 IEEE 8th International Conference on Computer Science and Network Technology (ICCSNT)
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