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Enhancing Imbalanced Dataset by Utilizing (K-NN Based SMOTE_3D Algorithm) 利用(基于K-NN的SMOTE_3D算法)增强不平衡数据集
Khaldoon Alshouiliy, Sujan Ray, A. Al-Ghamdi, D. Agrawal
Big data is currently a huge industry that has grown significantly every year. Big data is being used by machine learning and deep learning algorithm to study, analyze and parse big data and then drive useful and beneficial results. However, most of the real datasets are collected through different organizations and social media and mainly fall under the category of Big Data applications. One of the biggest and most drawbacks of such datasets is an imbalance representation of samples from different categories. In such case, the classifiers and deep learning techniques are not capable of handling issues like these. A majority of existing works tend to overlook these issues. Typical data balancing methods in the literature resort to data resampling whether it is under sampling a majority class samples or oversampling the minority class of samples. In this work, we focus on the minority sample and ignore the majority ones. Many researchers have done many works as most of the work suffers from over sampling or form the generated noise in the dataset. Additionally, works are either suitable for either big data or small data. Moreover, some other work suffers from a long processing time as complicated algorithms are used with many steps to fix the imbalance problem. Therefore, we introduce a new algorithm that deals with all these issues. We have created a short example to explain briefly how the SMOTE works and why we need to enhance the SMOTE and we have done this by using a very well-known imbalance dataset that we downloaded from the Kaggle website. We collect the results by using Azure machine learning platform. Then, we compare the results to see that the model is functional just good with SMOTE and way better than without it.
大数据目前是一个巨大的行业,每年都在显著增长。机器学习和深度学习算法正在使用大数据来研究、分析和解析大数据,然后得出有用和有益的结果。然而,大多数真实数据集是通过不同的组织和社交媒体收集的,主要属于大数据应用程序的范畴。这种数据集最大也是最缺点之一是来自不同类别的样本的不平衡表示。在这种情况下,分类器和深度学习技术无法处理此类问题。现有的大多数作品往往忽略了这些问题。文献中的典型数据平衡方法采用数据重采样,无论是对多数类样本的欠采样还是对少数类样本的过采样。在这项工作中,我们专注于少数样本,而忽略了多数样本。许多研究人员已经做了许多工作,因为大多数工作都存在过度采样或在数据集中形成生成的噪声的问题。此外,作品要么适合大数据,要么适合小数据。此外,由于使用复杂的算法和许多步骤来解决不平衡问题,一些其他工作的处理时间很长。因此,我们引入了一种新的算法来处理所有这些问题。我们创建了一个简短的例子来简要解释SMOTE是如何工作的,以及为什么我们需要增强SMOTE,我们通过使用从Kaggle网站下载的一个非常著名的不平衡数据集来做到这一点。我们使用Azure机器学习平台收集结果。然后,我们比较了结果,发现有了SMOTE,模型的功能就很好,而且比没有SMOTE要好得多。
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引用次数: 1
Estimation of nonlinear systems parameters 非线性系统参数的估计
Mohamed Benyassi, A. Brouri
Received Apr 23, 2019 Revised Jul 5, 2019 Accepted Oct 6, 2019 In this paper, an identification method is proposed to determine the nonlinear systems parameters. The proposed nonlinear systems can be described by Wiener systems. This structure of models consists of series of linear dynamic element and a nonlinearity block. Both the linear and nonlinear parts are nonparametric. In particular, the linear subsystem of structure entirely unknown. The considered nonlinearity function is of hard type. This latter can have a dead zone or with preload. These nonlinear systems have been confirmed by several practical applications. The suggested approach involves easily generated excitation signals.
本文提出了一种非线性系统参数的辨识方法。所提出的非线性系统可以用维纳系统来描述。该模型结构由一系列线性动力单元和非线性块组成。线性部分和非线性部分都是非参数的。特别是线性子系统的结构完全未知。所考虑的非线性函数是硬型的。后者可以有一个死区或预加载。这些非线性系统已被几个实际应用所证实。建议的方法包括容易产生的激励信号。
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引用次数: 0
Discrete time reaching law based variable structure control for fast reaching with reduced chattering 基于离散时间趋近律的变结构快速趋近控制
P. Padmalatha, Susy Thomas
In this paper, a variable structure control law is proposed for discrete time sliding mode control so as to reduce both reaching time and quasi sliding mode band reduction. This new law is composed of two different sliding variable dynamics; one to achieve fast reaching and the other to counter its effect on widening the quasi sliding mode band. This is accomplished by introducing a boundary layer around the sliding surface about which the transformation of the sliding variable dynamics takes place. This provides the flexibility to choose the initial dynamics in such a way as to speed up the reaching phase and then at the boundary transform this dynamics to one that reduces the quasi sliding mode band. Thus, the law effectively coalesces the advantageous traits of hitherto proposed reaching laws that succeed in either the reduction of reaching phase or the elimination of quasi sliding mode band. The effectiveness of the proposed reaching law is validated through simulations.
本文提出了一种离散时间滑模控制的变结构控制律,以减少到达时间和准滑模带的减少。这个新定律由两种不同的滑动变量动力学组成;一个用于实现快速到达,另一个用于抵消其对加宽准滑动模带的影响。这是通过在滑动表面周围引入边界层来实现的,围绕该边界层进行滑动变量动力学的变换。这提供了选择初始动力学的灵活性,以加快到达阶段,然后在边界处将该动力学转换为减少准滑动模式带的动力学。因此,该定律有效地结合了迄今为止提出的到达定律的有利特性,这些到达定律成功地减少了到达相位或消除了准滑动模带。通过仿真验证了所提出的趋近律的有效性。
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引用次数: 3
Design and development of soft robotic hand for vertical farming in spacecraft 航天器垂直农业用柔性机械手的设计与研制
A. Suresh, G. Udupa, Dhruv Gaba
For colonization in deep space we need to explore the feasibility of a bioregenerative system in microgravity or artificial gravity environments. The process has various complexities form ranging to biological obstacles to engineering limitations of the spacecraft. Concentration of microbes in the confinements of a spacecraft can be fatal for the crew. In this paper, a solution to the elevated microbial levels by farming using robots is discussed. The soft robotic arm is made up of Asymmetric Flexible Pneumatic Actuator (AFPA). The AFPA under internal pressure will curve in the direction of the side having greater thickness as the expansion of the thinner side (outside radius) will be more than thicker side (inside radius) due to differential expansion and moment induced due to eccentricity. Simulation results demonstrate that bending based on AFPA can meet the designed requirement of application. The AFPA is used for five fingers of the robotic hand. The safe, soft touch and gentle motion of the bellow (AFPA) gives the feel of real human hand. The internal pressure of the AFPA is controlled using a solenoid valve which is interfaced using an Arduino microcontroller for hand like moves. The bending of the fingers and degree of freedom (DOF) of the joints of the hand is controlled using an IMU and flex sensor. Wireless connection of the hand and the control system is implemented using XBee pro 60mW with a range of 1 miles.The pneumatic soft robotic hand is made up of solenoid valve, Mini Compressor, AFPA bellow, and Servos. This soft robotic hand has many advantages such as good adaptability, simple structure, small size, high flexibility and less energy loss. As an extension Manual control of the robot using a virtual reality environment and well as some possible aspects of an automated farming systems can be considered as future additions.
对于深空殖民,我们需要探索在微重力或人工重力环境中建立生物再生系统的可行性。这个过程有各种各样的复杂性,从生物障碍到航天器的工程限制。航天器密闭空间中的微生物浓度对机组人员来说可能是致命的。在本文中,讨论了使用机器人耕种来解决微生物水平升高的问题。软机械臂由非对称柔性气动执行器(AFPA)组成。内压下的AFPA将向厚度较大的一侧弯曲,因为较薄一侧(外半径)的膨胀将大于较厚一侧(内半径),这是由于偏心引起的差异膨胀和力矩。仿真结果表明,基于AFPA的弯曲可以满足设计的应用要求。AFPA用于机械手的五个手指。波纹管(AFPA)的安全、柔软的触感和轻柔的动作给人一种真正人手的感觉。AFPA的内部压力由一个电磁阀控制,该电磁阀通过Arduino微控制器接口进行手动移动。手指的弯曲和手的关节的自由度(DOF)使用IMU和柔性传感器来控制。手和控制系统的无线连接使用XBee pro 60mW实现,续航里程为1英里。气动软机械手由电磁阀、迷你压缩机、AFPA波纹管和伺服系统组成。这种柔性机械手具有适应性强、结构简单、体积小、灵活性高、能量损失小等优点。作为扩展,使用虚拟现实环境以及自动化农业系统的一些可能方面对机器人进行手动控制可以被视为未来的补充。
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引用次数: 4
Multi-objective optimization and linear buckling of serial chain of a medical robot tool for soft tissue surgery 一种用于软组织手术的医疗机器人工具系列链的多目标优化和线性屈曲
G. Ilewicz, A. Harlecki
Received Oct 13, 2019 Revised Dec 27, 2019 Accepted Jan 12, 2020 The slender structures of a medical robot may have a tendency to buckling when a force equal to the critical Euler force and an additional disturbance will work on their structures. In this work, eigenvalue problem that describes the linear buckling is under consideration. The main goal of the article is to check when linear buckling phenomenon appears in construction of a medical robot with serial chain due to the fact that for safety reasons of a robot’s work, it is necessary to answer the question, whether the buckling may occur in the robot’s structure. For this purpose, a numerical calculation model was defined by using the finite element method. The values of load factor coefficients that are eigenvalue are determinated and also the eigenvectors that have shapes of deformation for the next eigenvalues are presented. The multi-criteria optimization model was determined to aim for the minimum mass of the effector and the buckling coefficient, from which the Euler force results, for the maximum. The solution was obtained on the basis of Pareto fronts and the MOGA genetic algorithm.
接收日期2019年10月13日修订日期2019年12月27日接受日期2020年1月12日当等于临界欧拉力的力和额外的扰动作用于医疗机器人的细长结构时,其结构可能有屈曲的趋势。在这项工作中,描述线性屈曲的特征值问题正在考虑之中。本文的主要目的是检查具有串联链的医疗机器人在结构中何时出现线性屈曲现象,因为出于机器人工作的安全原因,有必要回答机器人结构中是否会出现屈曲的问题。为此,使用有限元方法定义了一个数值计算模型。确定了作为特征值的载荷系数的值,并给出了下一个特征值的具有变形形状的特征向量。确定了多准则优化模型,以使效应器的质量最小,并使产生欧拉力的屈曲系数最大。在Pareto前沿和MOGA遗传算法的基础上得到了解。
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引用次数: 2
Optimized Convolutional Neural Network-Based Object Recognition for Humanoid Robot 基于优化卷积神经网络的人形机器人目标识别
Xiao Ming, Xiao Nanfeng, Zeng Mengjun, Yuan Qunyong
In recent years, many researchers have proposed a series of algorithms based on convolutional neural networks and achieved good performances in the field of object detection and recognition. For humanoid robots, they are designed to assist or replace people in completing a series of anthropomorphic tasks, and their ability to recognize and grasp surrounding objects is the most basic requirement.
近年来,许多研究者提出了一系列基于卷积神经网络的算法,并在物体检测和识别领域取得了良好的表现。对于人形机器人来说,其设计目的是协助或代替人完成一系列拟人任务,对周围物体的识别和抓取能力是其最基本的要求。
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引用次数: 2
Intelligent robust control system of robotic unicycle based on the end-to-end soft computing technology 基于端到端软计算技术的机器人独轮车智能鲁棒控制系统
Ulyanov Sergey, Ulyanov Viktor
The extraction of knowledge from a new movement types is based on studding of mathematical model benchmarks. The robotic unicycle motion is one of such type of “benchmark movements” (benchmark model of nonlinear mechanics),1–5 described as nonlinear nonholonomic, global unstable dynamic system. Related research of such dynamic systems is interesting for nonlinear mechanics (to develop a new method of nonlinear effects research) and for modern control theory (to deve1op a new intelligent control algorithms).
从一种新的运动类型中提取知识是基于对数学模型基准的研究。机器人独轮车运动是一类“基准运动”(非线性力学基准模型),1-5被描述为非线性非完整的、全局不稳定的动力系统。这类动态系统的相关研究对于非线性力学(开发一种非线性效应研究的新方法)和现代控制理论(开发一种新的智能控制算法)都是有趣的。
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引用次数: 0
A Simulation Model To Optimize The Painting Robots 一种优化涂装机器人的仿真模型
K. Nuntiya, C. Seksan, T. Dechathanat, W. Fasai, S. Pramot, A. Ismail
Robots have been widely used to replace human labors in the manufacturing factories, especially when dealing with hazardous environments such as chemicals, heat, etc. Other objective including ensuring consistent quality taking advantages of continuous operation of the robots. However, one major hindrance is the high initial investment of the robots despite the benefit acquired when the robots is used. Often, the skeptical opinion of the investors winding down the proposal. Therefore, the simulation of process improvement activities especially on the robot-based production process is a subject of great interest, which requires low to no-cost without jeopardizing the investor trust. In the ceramic factory, different value products are produced. Finding the highest benefit from robotics is something to consider. In this study, a simulation software, namely FlexSim is analyzed and simulated to optimize the painting process by robots.
机器人已被广泛应用于制造工厂,以取代人力,特别是当处理危险环境,如化学品,热等。其他目标包括利用机器人的连续操作来确保始终如一的质量。然而,一个主要的障碍是机器人的高初始投资,尽管机器人使用时获得的好处。通常情况下,投资者的怀疑态度会削弱提案。因此,过程改进活动的模拟,特别是基于机器人的生产过程的模拟是一个非常有趣的主题,它需要低到零成本,而不会损害投资者的信任。在陶瓷厂,生产不同价值的产品。找到机器人的最大好处是需要考虑的事情。在本研究中,对FlexSim仿真软件进行了分析和仿真,以优化机器人涂装过程。
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引用次数: 0
A Robotic Transportation System via Hybrid Jump-Gliding Locomotion 基于跳滑混合运动的机器人运输系统
Mazhari Arash Alex, Hunter Daniel, Teodorescu Mircea
In this paper, various methods of bio-inspired locomotion are investigated with the objective of designing a robotic system to transport a payload via the convention of repeatable jump gliding. The authors provide the mission objective of transporting a payload over a stepped incline, and propose a winged bipedal robot parameterized under the bounding requisites that such a system be capable of exploiting the joint locomotive implications of jumping and gliding for a series of controlled flights and subsequent landings.
在本文中,研究了各种仿生运动的方法,目的是设计一个机器人系统,通过重复跳跃滑翔的惯例来运输有效载荷。作者提出了在阶梯式斜坡上运输有效载荷的任务目标,并提出了一种有翼双足机器人,在边界条件下参数化,使该系统能够利用联合机车的跳跃和滑翔影响进行一系列受控飞行和随后的着陆。
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引用次数: 0
World's First Drone-Assisted Safety Inspection and Monitoring System for Confined Spaces in Cement Plants 世界上第一个无人机辅助水泥厂密闭空间安全检查和监测系统
A. Alsayed, M. Nabawy, A. Yunusa‐Kaltungo, Mark K. Quinn, F. Arvin
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引用次数: 0
期刊
IEEE International Conference on Robotics and Automation : ICRA : [proceedings]. IEEE International Conference on Robotics and Automation
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