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2021 IEEE 19th International Conference on Industrial Informatics (INDIN)最新文献

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Quantification of Defects with Point-Focusing Shear Horizontal Guided Wave EMAT Using Deep Residual Network 基于深度残差网络的点聚焦剪切水平导波EMAT缺陷量化
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557567
Hongyu Sun, Songling Huang, Shen Wang, Wei Zhao, Lisha Peng
In this work, a deep residual network named GFresNet-2D is proposed for a point-focusing shear horizontal guided wave electromagnetic acoustic transducer, which can be used to quantify different types of defects, such as pinholes, cracks, and corrosion, in materials. As the traditional feature extraction and statistical machine learning methods are too complex and rely on artificial recognition, an automatic feature extraction model based on deep learning is applied for defect detection and quantification. Owing to their similarity with the ultrasonic guided wave signals, the measured 1D signals from the experiments cannot be directly applied to train neural networks. Therefore, we used the normalization, minimum suppression, and continuous wavelet transform methods to convert the initial measured 1D signals into processed 2D images, and constructed a data set containing 1,440,000,000 signal/image data. The performance of the proposed GFresNet-2D model for this new data set was also compared with those of traditional models, and sensitivity analyses were performed for some of the representative parameters. The results confirm that the proposed method can contribute to the development of deep-learning-based defect quantification using the ultrasonic guided wave focusing method.
在这项工作中,提出了一个名为GFresNet-2D的深度残余网络,用于点聚焦剪切水平导波电磁声换能器,可用于量化材料中不同类型的缺陷,如针孔,裂纹和腐蚀。针对传统的特征提取和统计机器学习方法过于复杂且依赖人工识别的缺点,采用基于深度学习的自动特征提取模型进行缺陷检测和量化。由于与超声导波信号的相似性,实验测得的一维信号不能直接用于神经网络的训练。因此,我们采用归一化、最小抑制和连续小波变换方法,将初始测量的一维信号转换为处理后的二维图像,构建了包含1440,000,000个信号/图像数据的数据集。并将所提出的GFresNet-2D模型与传统模型的性能进行了比较,并对一些代表性参数进行了敏感性分析。结果表明,该方法有助于基于深度学习的超声导波聚焦缺陷量化的发展。
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引用次数: 1
Development and Deployment of Complex Robotic Applications using Containerized Infrastructures 使用容器化基础设施的复杂机器人应用的开发和部署
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557386
Pedro Melo, Rafael Arrais, G. Veiga
There are significant difficulties in deploying and reusing application code within the robotics community. Container technology proves to be a viable solution for such problems, as containers isolate application code and all its dependencies from the surrounding computational environment. They are also light, fast and performant. Manual generation of configuration files required by orchestration tools such as Docker Compose is very time-consuming, especially for more complex scenarios. In this paper a solution is presented to ease the development and deployment of Robot Operating System (ROS) packages using containers, by automatically generating all files used by Docker Compose to both containerize and orchestrate multiple ROS workspaces, supporting multiple ROS distributions and multi-robot scenarios. The proposed solution also generates Dockerfiles and is capable of building new Docker images at run-time, given a list of desired ROS packages to be containerized. Integration with existing Docker images is supported, even if non-ROS-related. After an analysis of existing solutions and techniques for containerizing ROS nodes, the multi-stage pipeline adopted by the proposed solution for file generation is detailed. Then, a real usage example of the proposed tool is presented, showcasing how it an aid both the development and deployment of new ROS packages and features.
在机器人社区中,部署和重用应用程序代码存在重大困难。容器技术被证明是解决此类问题的可行方案,因为容器将应用程序代码及其所有依赖项与周围的计算环境隔离开来。它们也很轻,速度快,性能好。手工生成编排工具(如Docker Compose)所需的配置文件非常耗时,特别是对于更复杂的场景。本文提出了一种使用容器简化机器人操作系统(ROS)包的开发和部署的解决方案,通过自动生成Docker Compose使用的所有文件来容器化和编排多个ROS工作区,支持多个ROS发行版和多机器人场景。提出的解决方案还生成Dockerfiles,并能够在运行时构建新的Docker映像,给定要容器化的所需ROS包列表。支持与现有Docker镜像的集成,即使是非ros相关的。在分析了现有的容器化ROS节点的解决方案和技术之后,详细介绍了该方案采用的多级管道生成文件。然后,给出了所建议工具的一个实际使用示例,展示了它如何帮助开发和部署新的ROS包和特性。
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引用次数: 3
A Predicting Model For Accounting Fraud Based On Ensemble Learning 基于集成学习的会计舞弊预测模型
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557545
Yunchuan Sun, Zixiu Ma, Xiaoping Zeng, Yao Guo
Accounting fraud, usually difficult to detect, can cause significant harm to stakeholders and serious damage to the market. Effective methods of accounting fraud detection are needed for the prevention and governance of accounting fraud.In this study, we develop a novel accounting fraud prediction model using XGBoost, a powerful ensemble learning approach. We respectively select 12 financial ratios, 28 raw accounting numbers and 99 raw accounting numbers available from Chinese listed firms’ financial statements, as the model input. To assess the performance of fraud prediction models, we select two evaluation metrics - AUC and NDCG@k, and two benchmark models - the Dechow et al. (2011) logistic regression model based on financial ratios, and the Bao et al. (2020) AdaBoost model based on raw accounting numbers.Results show that: 1) our XGBoost-based prediction model outperforms two benchmark models by a large margin whatever model inputs and evaluation metrics; 2) the XGBoost-based prediction model with raw accounting numbers input outperforms the one with financial ratios input; 3) the XGoost-based prediction model with 99 raw accounting numbers input outperforms the one with 28 raw accounting numbers input.
会计舞弊通常难以发现,会对利益相关者造成重大损害,对市场造成严重损害。预防和治理会计舞弊需要有效的会计舞弊检测方法。在本研究中,我们使用强大的集成学习方法XGBoost开发了一种新的会计欺诈预测模型。我们分别从中国上市公司的财务报表中选取12个财务比率、28个原始会计编号和99个原始会计编号作为模型输入。为了评估欺诈预测模型的性能,我们选择了两个评估指标——AUC和NDCG@k,以及两个基准模型——Dechow等人(2011年)基于财务比率的逻辑回归模型,以及Bao等人(2020年)基于原始会计数字的AdaBoost模型。结果表明:1)无论模型输入和评估指标如何,基于xgboost的预测模型都比两种基准模型表现更好;2)以原始会计数字输入的基于xgboost的预测模型优于财务比率输入的预测模型;3)输入99个原始会计号的基于xgood的预测模型优于输入28个原始会计号的预测模型。
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引用次数: 0
Learning-based Co-Design of Distributed Edge Sensing and Transmission for Industrial Cyber-Physical Systems 基于学习的工业信息物理系统分布式边缘传感与传输协同设计
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557472
Tiankai Jin, Zhiduo Ji, Shanying Zhu, Cailian Chen
Industrial cyber-physical systems (ICPS) refer to an emerging generation of intelligent systems, where distributed data acquisition is of great importance and is influenced by data transmission. In the improvement of the overall performance of sensing accuracy and energy efficiency, sensing and transmission are tightly coupled. Due to the unknown transmission channel states in the harsh industrial field environment, intelligently performing sensor scheduling for distributed sensing is challenging. In this paper, edge computing technology is utilized to enhance the level of intelligence at the edge side and deploy advanced scheduling algorithms. We propose a learning-based distributed edge sensing-transmission co-design (LEST) algorithm under the coordination of the sensors and the edge computing unit (ECU). Deep reinforcement learning is applied to perform real-time sensor scheduling under unknown channel states. The conditions for the existence of feasible scheduling policies are analyzed. The proposed algorithm is applied to estimate the slab temperature in the hot rolling process, which is a typical ICPS. The simulation results demonstrate that the overall performance of LEST is better than other suboptimal algorithms.
工业信息物理系统(ICPS)是新兴的一代智能系统,分布式数据采集具有重要意义,且受数据传输的影响。在提高传感精度和能效的综合性能方面,传感和传输是紧密耦合的。在恶劣的工业现场环境中,由于传输信道状态未知,智能地执行分布式传感传感器调度具有挑战性。本文利用边缘计算技术提高边缘端的智能水平,部署先进的调度算法。在传感器和边缘计算单元(ECU)的协同下,提出了一种基于学习的分布式边缘感知传输协同设计(least)算法。在未知信道状态下,应用深度强化学习进行实时传感器调度。分析了可行调度策略存在的条件。将该算法应用于热轧过程中板坯温度的估计,这是一个典型的ICPS算法。仿真结果表明,该算法的总体性能优于其他次优算法。
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引用次数: 1
Tensor Multi-Task Learning for Predicting Alzheimer’s Disease Progression using MRI data with Spatio-temporal Similarity Measurement 张量多任务学习预测阿尔茨海默病进展使用MRI数据与时空相似性测量
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557584
Yu Zhang, Po-Sung Yang, V. Lanfranchi
Alzheimer's disease (AD) is a typical progressive neurodegenerative disease with insidious onset. Utilising various biomarkers to track and predict AD progression for supporting clinic decisions has recently received wide attentions. Accurate prediction of disease progression will help clinicians and patients make the best decisions on disease prevention and treatment. Typical prediction models focus on extracting biomarker morphological information of different regions of interest (ROIs) from magnetic resonance imaging (MRI) or positron emission tomography (PET), such as the average regional cortical thickness and regional volume. They are effective in modeling AD progression and understanding AD biomarkers, but cannot make full utilise of the internal temporal and spatial relationships between these biomarkers to improve the accuracy and stability of AD prediction. In this paper, we propose a new multi-task learning (MTL) method based on the tensor composed of the spatio-temporal similarity measure between brain biomarkers, using MRI data and cognitive scores of AD patients in different stages can effectively predict the progression of AD. Specifically, we define a temporal and spatial feature similarity measure to calculate the rate of change and velocity of each biomarker in MRI to form a vector, which represents the morphological changing trend of the biomarker, then we calculate the similarity of the changing trend between two biomarkers and encode the data to the third-order tensor, and extract interpretable biomarker latent factors from the original data. The prediction of each patient sample in the tensor is a task and all prediction tasks share a set of latent factors obtained from tensor decomposition to train the AD progression prediction model, which learns task correlation from the spatiotemporal tensor itself. We conducted extensive experiments utilising the data from the Alzheimer's Disease Neuroimaging Initiative (ADNI). Experimental results show that compared with ROI-based traditional single feature regression methods, our proposed method has better accuracy and stability in disease progression prediction in terms of root mean square error exhibiting an average of 4.10 decrease compared to Ridge regression, 0.19 decrease compared to Lasso regression and 0.18 decrease compared to Temporal Group Lasso (TGL) in the Mini Mental State Examination (MMSE) questionnaire.
阿尔茨海默病(AD)是一种典型的进行性神经退行性疾病,发病隐匿。利用各种生物标志物来跟踪和预测阿尔茨海默病的进展以支持临床决策最近受到了广泛的关注。准确预测疾病进展将有助于临床医生和患者做出疾病预防和治疗的最佳决策。典型的预测模型侧重于从磁共振成像(MRI)或正电子发射断层扫描(PET)中提取不同感兴趣区域(roi)的生物标志物形态学信息,如平均区域皮质厚度和区域体积。它们在模拟AD进展和理解AD生物标志物方面是有效的,但不能充分利用这些生物标志物之间的内部时空关系来提高AD预测的准确性和稳定性。在本文中,我们提出了一种新的基于脑生物标志物间时空相似性度量组成的张量的多任务学习(MTL)方法,利用MRI数据和不同阶段AD患者的认知评分可以有效预测AD的进展。具体而言,我们定义一个时空特征相似性测度,计算每个生物标志物在MRI中的变化速率和速度,形成一个向量,表示生物标志物的形态变化趋势,然后计算两个生物标志物之间变化趋势的相似性,并将数据编码为三阶张量,从原始数据中提取可解释的生物标志物潜在因素。对张量中每个患者样本的预测是一个任务,所有的预测任务共享一组由张量分解得到的潜在因素来训练AD进展预测模型,该模型从时空张量本身学习任务相关性。我们利用阿尔茨海默病神经影像学倡议(ADNI)的数据进行了广泛的实验。实验结果表明,与基于roi的传统单特征回归方法相比,我们提出的方法在疾病进展预测方面具有更好的准确性和稳定性,其均方根误差在迷你精神状态检查(MMSE)问卷中比Ridge回归平均降低4.10,比Lasso回归平均降低0.19,比颞叶组Lasso (TGL)平均降低0.18。
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引用次数: 8
Fault Detection in Solar PV Systems Using Hypothesis Testing 基于假设检验的太阳能光伏系统故障检测
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557582
F. Harrou, B. Taghezouit, Benamar Bouyeddou, Ying Sun, A. Arab
The demand for solar energy has rapidly increased throughout the world in recent years. However, anomalies in photovoltaic (PV) plants can reduce performances and result in serious consequences. Developing reliable statistical approaches able to detect anomalies in PV plants is vital to improving the management of these plants. Here, we present a statistical approach for detecting anomalies in the DC part of PV plants and partial shading. Firstly, we model the monitored PV plant. Then, we employ a generalized likelihood ratio test, which is a powerful anomaly detection tool, to check the residuals from the model and reveal anomalies in the supervised PV array. The proposed strategy is illustrated via actual measurements from a 9.54 PV plant.
近年来,全世界对太阳能的需求迅速增加。然而,光伏电站的异常会降低性能并导致严重后果。开发能够检测光伏电站异常的可靠统计方法对于改善这些电站的管理至关重要。在这里,我们提出了一种统计方法来检测光伏电站直流部分和部分遮阳的异常。首先,对监测的光伏电站进行建模。然后,我们使用了一种强大的异常检测工具——广义似然比检验来检查模型的残差,并揭示监督光伏阵列的异常。所提出的策略通过9.54光伏电站的实际测量来说明。
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引用次数: 0
Recommendation System using Reinforcement Learning for What-If Simulation in Digital Twin 基于强化学习的数字孪生假设仿真推荐系统
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557372
Flávia Pires, B. Ahmad, A. Moreira, P. Leitão
The research about the digital twin concept is growing worldwide, especially in the industrial sector, due to the increasing digitisation level associated to Industry 4.0. The application of the digital twin concept improves performance of a system by implementing monitoring, diagnosis, optimisation, and decision support actions. In particular, the decision-making process is very time consuming since the decision-maker is presented with hundreds of different scenarios that can be simulated and assessed in a what-if perspective. Bearing this in mind, this paper proposes to integrate a digital twin-based what-if simulation with a recommendation system to improve the decision-making cycle. The recommendation system is based on a reinforcement learning technique and takes user knowledge of the system into consideration and trust in the system recommendation. The applicability of the proposed approach is presented in an assembly line case study for recommending the best configurations for the system operation, in terms of the optimal number of AGVs (Autonomous Guided Vehicles) in various scenarios. The achieved results show its successful application and highlight the benefits of using AI-based recommendation systems for what-if simulation in digital twin systems.
由于与工业4.0相关的数字化水平不断提高,关于数字孪生概念的研究在全球范围内正在增长,特别是在工业领域。数字孪生概念的应用通过实施监测、诊断、优化和决策支持行动来提高系统的性能。特别是,决策过程非常耗时,因为决策者要面对数百种不同的场景,这些场景可以从假设的角度进行模拟和评估。考虑到这一点,本文提出将基于数字双胞胎的假设模拟与推荐系统集成,以改善决策周期。推荐系统基于强化学习技术,考虑了用户对系统的了解和对系统推荐的信任。在一个装配线案例研究中,根据各种场景下agv(自动导引车)的最佳数量,提出了该方法的适用性,以推荐系统运行的最佳配置。所取得的结果表明了该方法的成功应用,并突出了在数字孪生系统中使用基于人工智能的推荐系统进行假设模拟的好处。
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引用次数: 4
Standards and Interoperability in Industrial Electronics – A Trending View 工业电子中的标准和互操作性-趋势视图
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557461
V. Huang, H. Nishi, A. Espírito-Santo, Allen C. Chen, D. Bruckner
With the active development of IES in standards since the mid-2010s, the society has made considerable progress with multiple standards’ developments. This paper presents the results of engaging in standards’ development within and across borders of an IEEE society. In particular, the hands-on INTEROP Plugfests, coupled with the CoEs, provide platforms to create ideas for standards, develop standards, initiate interoperability among multiple vendors, providing competitive time-to-market advantage for involved industry partners.
自2010年代中期以来,随着IES在标准中的积极发展,多种标准的发展使社会取得了长足的进步。本文介绍了在IEEE协会内部和跨界参与标准开发的结果。特别是,实际操作的INTEROP plugtest与coe相结合,提供了为标准创建想法、开发标准、启动多个供应商之间的互操作性的平台,为相关的行业合作伙伴提供了具有竞争力的上市时间优势。
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引用次数: 0
Multi-Robot Multiple Camera People Detection and Tracking in Automated Warehouses 自动化仓库中多机器人多摄像机人员检测与跟踪
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557363
Michela Zaccaria, M. Giorgini, Riccardo Monica, J. Aleotti
In this work a multi-robot system is presented for people detection and tracking in automated warehouses. Each Automated Guided Vehicle (AGV) is equipped with multiple RGB cameras that can track the workers’ current locations on the floor thanks to a neural network that provides human pose estimation. Based on the local perception of the environment each AGV can exploit information about the tracked people for self-motion planning or collision avoidance.Additionally, data collected from each robot contributes to a global people detection and tracking system. A warehouse central management software fuses information received from all AGVs into a map of the current locations of workers. The estimated locations of workers are sent back to the AGVs to prevent potential collision. The proposed method is based on two-level hierarchy of Kalman filters. Experiments performed in a real warehouse show the viability of the proposed approach.
本文提出了一种用于自动化仓库中人的检测与跟踪的多机器人系统。每辆自动导引车(AGV)都配备了多个RGB摄像头,通过提供人体姿势估计的神经网络,可以跟踪工人在地板上的当前位置。基于对环境的局部感知,每个AGV可以利用被跟踪人员的信息进行自我运动规划或避免碰撞。此外,从每个机器人收集的数据有助于全球人员检测和跟踪系统。仓库中央管理软件将从所有agv接收的信息融合到工人当前位置的地图中。工作人员的估计位置被发送回agv,以防止潜在的碰撞。该方法基于卡尔曼滤波器的两级层次结构。在实际仓库中进行的实验表明了该方法的可行性。
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引用次数: 3
Migrating Engineering Tools Towards an AutomationML-Based Engineering Pipeline 将工程工具迁移到自动化的基于ml的工程管道
Pub Date : 2021-07-21 DOI: 10.1109/INDIN45523.2021.9557517
Anna-Kristin Behnert, Felix Rinker, A. Lüder, S. Biffl
Efficient and effective engineering data exchange is increasingly considered a key success factor in the life cycle of production systems, leading to the intensified development of data logistic solutions. As small and medium-size companies (SMEs) play important roles in modern engineering organization structures, SMEs have to improve their capabilities to take part in these data logistics solutions. Unfortunately, SMEs have strong human and financial resource limitations. In this paper, we introduce a modular and easy-to-use data logistics architecture that aims at enabling SMEs to implement proof-of-concept software structures, applicable to validate benefits and challenges of data logistic solutions. This data logistics architecture provides a migration path towards the full participation of SMEs in data logistic solutions for engineering data exchange. We demonstrate the application of the architecture on use cases in automotive, steel, and machining industries.
高效和有效的工程数据交换越来越被认为是生产系统生命周期中的关键成功因素,导致数据物流解决方案的加强发展。由于中小企业在现代工程组织结构中扮演着重要的角色,中小企业必须提高自己参与这些数据物流解决方案的能力。不幸的是,中小企业有很强的人力和财力限制。在本文中,我们介绍了一个模块化和易于使用的数据物流架构,旨在使中小企业能够实施概念验证软件结构,适用于验证数据物流解决方案的好处和挑战。这种数据物流架构为中小型企业全面参与工程数据交换的数据物流解决方案提供了一条迁移路径。我们演示了该架构在汽车、钢铁和机械加工行业用例中的应用。
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引用次数: 3
期刊
2021 IEEE 19th International Conference on Industrial Informatics (INDIN)
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