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Anomaly Detection Method for Chiller System of Supercomputer 超级计算机冷水机系统异常检测方法
Yuqi Li, Jinghua Feng, Changsong Li
Supercomputer reliability decreases with the increase of its scale. In this situation, the method to reduce the supercomputer MTTR (mean time to repair) plays a critical role in system management. Engineers at present typically use supercomputer metrics to construct anomaly detection methods and reduce the MTTR of supercomputers. However, the infrastructure data, including chilled water data, of supercomputers are neglected. This paper proposes an ensemble learning method for anomaly detection, which includes LSTM (long short-term memory) and linear regression algorithm. On the basis of this method, we construct an anomaly monitor system by using chilled water data. Experimental results show that the method can help engineers precisely detect anomalies.
超级计算机的可靠性随着规模的增大而降低。在这种情况下,如何降低超级计算机的平均修复时间(MTTR)在系统管理中起着至关重要的作用。目前,工程师通常使用超级计算机度量来构建异常检测方法,以降低超级计算机的MTTR。然而,包括冷冻水数据在内的超级计算机基础设施数据却被忽略了。本文提出了一种集成学习的异常检测方法,该方法将LSTM(长短期记忆)算法与线性回归算法相结合。在此基础上,构建了利用冷冻水数据的异常监测系统。实验结果表明,该方法可以帮助工程师精确地检测异常。
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引用次数: 0
Application of Improved Ant Colony Algorithm in the Path Planning Problem of Mobile Robot 改进蚁群算法在移动机器人路径规划问题中的应用
Min Cao, Yang Yang, Lianqing Wang
In this paper a global path planning method for mobile robots based on improved ant colony algorithm was proposed. Which overcome the problem that the traditional ant colony algorithm was prone to deadlock, may not get the global optimal solution and easily get into the local optimal problem. The transfer probability of ants in the traditional ant colony algorithm was adjusted to improve the occurrence of deadlock in the paper. And the roulette wheel algorithm in genetic algorithm was introduced to avoid the ant colony algorithm falling into the local optimal solution. At last the optimal parameter combination of the improved ant colony algorithm was obtained through simulation experiment. It could be seen from the simulation experimental data that the number of iterations to find the shortest path under the same conditions was reduced to 47.8%, which proved that the adoption of improved ant colony algorithm for path planning of mobile robot greatly improves the operating efficiency.
提出了一种基于改进蚁群算法的移动机器人全局路径规划方法。克服了传统蚁群算法容易出现死锁、不能得到全局最优解和容易陷入局部最优问题的问题。本文对传统蚁群算法中蚂蚁的迁移概率进行了调整,以减少死锁的发生。并引入遗传算法中的轮盘赌算法,避免蚁群算法陷入局部最优解。最后通过仿真实验得到了改进蚁群算法的最优参数组合。从仿真实验数据可以看出,在相同条件下寻找最短路径的迭代次数减少到47.8%,这证明采用改进的蚁群算法进行移动机器人的路径规划,大大提高了运行效率。
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引用次数: 5
Using Chatbot in Trading System for Small and Medium Enterprise (SMEs) by Convolution Neural Network Technique 基于卷积神经网络技术的聊天机器人在中小企业交易系统中的应用
Sathit Prasomphan
In several businesses, chatbots are used for providing customer information, answering questions, helping customer reservations, virtual assistants; serve as call centers to serve ten million customers automatically. This research presents a method for developing chatbots to serve their users. A deep learning based conversational artificial intelligence technique was used as tools for learning conversation between machine and customer. The convolution neural network technique by using Tensorflow training was used to improve the accuracy of these chatbots. Moreover, in this research, we developed a system for online sales assistant application system via Facebook Page.
在一些企业中,聊天机器人被用于提供客户信息、回答问题、帮助客户预订、虚拟助理;作为呼叫中心,自动服务千万客户。本研究提出了一种开发聊天机器人为用户服务的方法。将基于深度学习的会话人工智能技术作为学习机器与客户对话的工具。采用基于Tensorflow训练的卷积神经网络技术来提高这些聊天机器人的准确率。此外,在本研究中,我们开发了一个基于Facebook页面的在线销售助理应用系统。
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引用次数: 4
Precise Evaluation for Continuous Action Control in Reinforcement Learning 强化学习中连续动作控制的精确评估
Fengkai Ke, Daxing Zhao, Guodong Sun, Wei Feng
With the development of deep learning, reinforcement learning also gradually into the eye, reinforcement learning has made remarkable achievements in games, go games and other fields, but most of the control problems involved in these fields or tasks are discrete action control with sufficient rewards. Continuous action control in reinforcement learning is closer to the actual control problem, and is considered as one of the main channels leading to artificial intelligence, so it is also one of the research hotspots of researchers. The traditional continuous control algorithm for reinforcement learning evaluates the network with multiple outputs of a single scalar value. In this paper, an accurate evaluation mechanism and corresponding objective function are proposed to accelerate the reinforcement learning training process. The experimental results show that the accurate evaluation of log-cosh objective function can make the robot arm grasp the task more quickly, converge and complete the training task.
随着深度学习的发展,强化学习也逐渐进入人们的视野,强化学习在游戏、围棋游戏等领域取得了显著的成绩,但这些领域或任务所涉及的控制问题大多是具有足够奖励的离散动作控制。强化学习中的连续动作控制更接近实际控制问题,被认为是通向人工智能的主要通道之一,因此也是研究者的研究热点之一。传统的用于强化学习的连续控制算法对具有单个标量值的多个输出的网络进行评估。本文提出了一种准确的评价机制和相应的目标函数,以加快强化学习的训练过程。实验结果表明,log-cosh目标函数的准确评估可以使机械臂更快地掌握任务,收敛并完成训练任务。
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引用次数: 0
Traffic Sign Detection for Panoramic Images Using Convolution Neural Network Technique 基于卷积神经网络的全景图像交通标志检测
Sathit Prasomphan, Thanthip Tathong, Primpisa Charoenprateepkit
This research presents a method for panoramic traffic sign images detection for regulatory signs and guide signs especially blue and green sign. A new approach for detecting the signs inside a large panoramic image was considered. A convolution neural network technique was used as tools for detecting. In addition, the steps required are the technique used in conjunction with the convolution neural network technique by using Tensorflow training to improve the accuracy of traffic sign detection. Moreover, to improve the accuracy of image detection, some image processing technique was added. For example, adding brightness to an image. From the experimental results, detection of traffic signs from panoramic images (360°) by using trained convolution neural network model to improve a traffic sign detection, the accuracy from panoramic images (360°) is better than the traditional model.
本研究提出了一种交通标志全景图像检测方法,主要针对交通管制标志和引导标志,特别是蓝绿标志。提出了一种大型全景图像中信号检测的新方法。采用卷积神经网络技术作为检测工具。此外,所需的步骤是与卷积神经网络技术结合使用的技术,通过使用Tensorflow训练来提高交通标志检测的准确性。此外,为了提高图像检测的精度,还加入了一些图像处理技术。例如,为图像添加亮度。从实验结果来看,利用训练好的卷积神经网络模型从全景图像(360°)中检测交通标志,提高了从全景图像(360°)中检测交通标志的准确性。
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引用次数: 3
Time-varying Target Characteristic Analysis of Dual Stealth Aircraft Formation 双隐身飞机编队时变目标特性分析
Lei Bao, Chun-yang Wang, Juan Bai, ShengTeng Wei, Ming Tan, Yuan-jie Lv
Based on the research background of target formation characteristics of dual stealth aircraft, how to effectively compare and analyze the actual change characteristics of target formation RCS under different formation flying modes in penetration operation is discussed. The model of two-plane horizontal flight path, two-plane hovering track and two-plane formation infiltration maneuvering track are proposed. Based on the model, the attitude sensitivity of dual stealth aircraft formation is analyzed firstly, and then the line-of-sight attitude angle of dual stealth aircraft formation is calculated. Based on the static RCS data of dual stealth aircraft in the whole airspace, the time-varying dynamic RCS sequence is simulated. The simulation results show that the real-time RCS sequence distribution of the two-aircraft formation is more suitable than that of the single-aircraft formation at 150 meters interval when compared with the real-time RCS sequence of the single stealth aircraft under three different track attitudes, and the formation has less influence on the stealth performance.
基于双隐身飞机目标编队特性的研究背景,探讨了如何有效比较和分析突防作战中不同编队飞行模式下目标编队RCS的实际变化特性。提出了两平面水平航迹、两平面悬停航迹和两平面编队渗透机动航迹模型。基于该模型,首先分析了双隐身飞机编队的姿态灵敏度,然后计算了双隐身飞机编队的视距姿态角。基于双隐身飞机在全空域的静态RCS数据,仿真了时变动态RCS序列。仿真结果表明,与单架隐身飞机在三种不同航迹姿态下的实时RCS序列相比,双机编队在150 m间隔处的实时RCS序列分布比单机编队更合适,编队对隐身性能的影响较小。
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引用次数: 0
AMNet AMNet
Baiyi Shu, Jiong Mu, Yu Zhu
DeepLabv3+ is one of the most accurate algorithms in semantic segmentation. CBAM is an attention mechanism proposed to improve the performance of obect detection model which can be used in a convolutional neural network. Given an intermediate feature map, CBAM sequentially infers attention maps along two separate dimensions, channel and spatial, then the attention maps are multiplied to the input feature map for adaptive feature refinement. In the image segmentation tasks, in order to achieve the goal of enhancing feature representation and improving segmentation accuracy without extra overheads. In this paper, we proposed AMNet which is an end-to-end semantic segmentation network based on DeepLabv3+ which is embeded with CBAM. Further, CBAM activates when the input image passes through CNN.Channel attention module in CBAM focues on 'what' is meaningful given an input image and spatial attention module focus on 'where'. Our network acheives 77.66% mIoU on the PASCAL VOC2012, which is a 2.73% better mIoU than DeepLabv3+ with 6 batchsize using only one single Nvidia 2080 GPU. Beyond that, for getting a faster segmentation model, we also embed the attention mechanism into ENet, one of the fastest lightweight networks. After our evaluation on the Cityscapes dataset, we got a better performance in the case of fast training speed. The feasibility that attention mechanism can be integrated into semantic segmentaion network is proved.
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引用次数: 1
Visual Analysis of Hotspots in Educational Informationization in Ethnic Areas 民族地区教育信息化热点可视化分析
Xiaoyu Zhu, Xiaodong Yan
The government has increased investment in the informationization area of education in ethnic areas over the decades, aiming at promoting the process of education informatization. It selects the literature resources related to national education informatization from 1998 to 2018 CNKI for comprehensive research and analysis. And it makes a visual analysis of the research hotspots and development of educational informationization in ethnic regions from the aspects of literature volume, word frequency analysis, co-word analysis, multi-dimensional scale analysis, using SATI 3.2, UCINET 6.0, NetDraw and SPSS software. Through visualization analysis, we can further explore the trend of national education informationization research and development, and provides basis and reference for promoting the in-depth research and practice of education informationization.
几十年来,国家加大了对民族地区教育信息化领域的投入,旨在推动教育信息化进程。选取1998年至2018年CNKI全国教育信息化相关文献资源进行综合研究分析。运用SATI 3.2、UCINET 6.0、NetDraw和SPSS软件,从文献量、词频分析、共词分析、多维尺度分析等方面对民族地区教育信息化的研究热点和发展进行了直观的分析。通过可视化分析,可以进一步探索国家教育信息化研究与发展的趋势,为推动教育信息化的深入研究与实践提供依据和参考。
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引用次数: 0
Pretreatment of Cotton Processing Data Based on SPSS 基于SPSS的棉花加工数据预处理
Xue Han, Yong Zhang, J. Qiao
In the processing of cotton, a large variety of data is generated, and researchers can use this data to conduct a large number of studies to improve the quality of cotton processing. Before mining the historical data, it is necessary to pre-process the dirty data of the actual application. According to the actual data provided by the cotton factory, the data is preprocessed by the raw data. By comparing the advantages and disadvantages of various algorithms, Regression filling method is used to process data missing values. The data is standardized by Z-score method, the data is processed into the same dimension, and the seed cotton data is clustered by K-means algorithm. We choose SPSS as the data preprocessing simulation software to provide effective high-quality data for the next step of data mining.
在棉花的加工过程中,会产生各种各样的数据,研究人员可以利用这些数据进行大量的研究,以提高棉花的加工质量。在挖掘历史数据之前,需要对实际应用的脏数据进行预处理。根据棉厂提供的实际数据,对原始数据进行预处理。通过比较各种算法的优缺点,采用回归填充法对数据缺失值进行处理。采用Z-score方法对数据进行标准化,对数据进行同维处理,采用K-means算法对种棉数据进行聚类。我们选择SPSS作为数据预处理仿真软件,为下一步的数据挖掘提供有效的高质量数据。
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引用次数: 0
Minimized Makespan Based Improved Cat Swarm Optimization for Efficient Task Scheduling in Cloud Datacenter 基于最小化完工时间的改进Cat群优化云数据中心高效任务调度
Danlami Gabi, A. Ismail, Nasiru Muhammad Dankolo
Inefficient scheduling of tasks on cloud datacenter resources can result in underutilization leading to poor revenue generation. To show efficient tasks scheduling on cloud datacenter, the makespan time needs to be minimized. In this paper, we introduced a conventional Cat Swarm Optimization (CSO) task scheduling technique as an ideal solution. Although the CSO is promising in terms of convergence speed, certain improvements are required to make it efficient for cloud task scheduling since it suffers entrapment at the local search. To overcome this, we incorporated a Linear Descending Inertia Weight (LDIW) equation at the local search of the CSO technique. This led to better convergence speed and possibly ensured efficient tasks mapping on virtual resources that minimizes the makespan time. The proposed CSO-LDIW technique is implemented on CloudSim simulator tool with five (5) heterogeneous Virtual Machines (VMs) under consideration to show its performance. The results of the simulation indicate that a comparison with that of the Particle Swarm Optimization-Linear Descending Inertia Weight (PSO-LDIW) and the CSO shows that our proposed CSO-LDIW can schedule task effectively on cloud resource with a promising makespan time.
云数据中心资源上的任务调度效率低下可能导致利用率不足,从而导致收入减少。为了在云数据中心上显示高效的任务调度,需要最小化makespan时间。本文介绍了一种传统的Cat Swarm Optimization (CSO)任务调度技术作为理想的解决方案。尽管CSO在收敛速度方面很有希望,但由于它在本地搜索时受到干扰,因此需要进行某些改进以使其在云任务调度方面更有效。为了克服这个问题,我们在CSO技术的局部搜索中引入了线性下降惯性权重(LDIW)方程。这导致了更好的收敛速度,并可能确保在虚拟资源上有效地映射任务,从而最大限度地减少最大时间。提出的CSO-LDIW技术在CloudSim模拟器工具上实现,考虑了5个异构虚拟机(vm)来展示其性能。仿真结果表明,与粒子群优化-线性下降惯性权算法(PSO-LDIW)和粒子群优化算法(CSO)的比较表明,我们提出的粒子群优化-线性下降惯性权算法(PSO-LDIW)可以有效地在云资源上调度任务,并具有良好的最大完成时间。
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引用次数: 11
期刊
Proceedings of the 2019 3rd High Performance Computing and Cluster Technologies Conference
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