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2022 8th International Conference on Optimization and Applications (ICOA)最新文献

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On PI-Net deep learning model for classification of images 关于PI-Net深度学习模型的图像分类
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934351
Abdellah Haddad, B. A. El Majd, D. Bennis
In this note we discuss the experiment part of the paper “PINet: A Deep Learning Approach to Extract Topological Persistence Images”, where Som et al. trained a base classification model called AlexNet on Cifar10 dataset to get an accuracy of 80%. Then, they concatenated the PIs features with AlexNet base features and trained the model once again to get an accuracy of around 81%. Here we give a slight modification of the PI-Net architecture. Namely, we add two dense layers at the end of the model, the first one has 1024 neurons with ReLu activation and the last one has 10 neurons with Softmax activation, and then we use it as a base classification model on Cifar10 dataset. This enables us to reach an accuracy of 82%.
在本文中,我们讨论了论文“PINet:一种提取拓扑持久性图像的深度学习方法”的实验部分,其中Som等人在Cifar10数据集上训练了一个名为AlexNet的基本分类模型,获得了80%的准确率。然后,他们将pi特征与AlexNet基础特征连接起来,并再次训练模型,以获得约81%的准确率。在这里,我们对PI-Net体系结构进行了轻微的修改。即,我们在模型的最后增加两个密集层,第一个层有1024个ReLu激活的神经元,最后一个层有10个Softmax激活的神经元,然后我们将其作为Cifar10数据集上的基本分类模型。这使我们能够达到82%的准确率。
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引用次数: 0
The importance of enterprise resource planning (ERP) in the optimisation of the small and medium enterprise's ressources in Morocco 企业资源规划(ERP)在摩洛哥中小企业资源优化中的重要性
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934158
A. Farah, Ech-Chatebi Jihane
Enterprise Resource Planning (ERP) is the most popular and successful IT solution, newly used in organizations to exchange the information among different business entities, to improve and maximize productivity. The system is expensive, time consumer and complicated to implement and manage. The challenges of ERP implementation have caused a high rate of failure based on the stories of numerous organizations that have deployed the solution. ERP brings together data from all business functions, giving the entire organization a broader perspective. They can control the whole company by monitoring purchasing, requests, ordering, finished products in stock and other business-critical information needed for management. Successfully deployed enterprise resource planning systems can deliver significant strategic, operational, and informational benefits to the organizations involved, saving resources and time.
企业资源规划(ERP)是最流行和最成功的IT解决方案,新近用于组织中不同业务实体之间的信息交换,以提高和最大限度地提高生产力。该系统成本高、耗时长、实施和管理复杂。基于部署该解决方案的众多组织的案例,ERP实施的挑战导致了高失败率。ERP汇集了所有业务功能的数据,为整个组织提供了更广阔的视角。他们可以通过监控采购、请求、订购、成品库存和其他管理所需的关键业务信息来控制整个公司。成功部署的企业资源计划系统可以为相关组织提供重要的战略、操作和信息利益,节省资源和时间。
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引用次数: 0
Applying Face Recognition in Video Surveillance for Security Systems 人脸识别在安防系统视频监控中的应用
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934625
K. Bouzaâchane, E. E. El Guarmah
In order to meet the security needs that are becoming more and more important with the economic advances, the development of physical or biometric access control systems is constantly growing. Several biometric modalities can be used and each one presents a particular interest, according to the targeted application. Within the framework of our study paper, we have realized a facial recognition system based on the EfficientDet model following the architecture of a deep neural network. The facial recognition process is divided into several steps, namely: face detection in each image, face normalization, facial feature extraction, classification and decision. The training and evaluation of the system were done on the database: Casia-web face. As Casia-web Face is unlabelled, we have developed an algorithm using the open source deep learning framework Mxnet to convert the images into binary format, reduce their size and give each image an identifier. Finally, the optimization of the system has been done using Root Mean Squared Propagation (RMSProp) and the Shard shuffling optimizers.
为了满足随着经济的发展而日益重要的安全需求,物理或生物识别门禁系统的发展也在不断增长。根据目标应用,可以使用几种生物识别模式,每种模式都有特定的兴趣。在我们的研究论文框架内,我们实现了一个基于深度神经网络架构的基于EfficientDet模型的面部识别系统。人脸识别过程分为几个步骤,即:每张图像中的人脸检测、人脸归一化、人脸特征提取、分类和决策。在数据库Casia-web face上对系统进行了培训和评估。由于Casia-web Face是无标签的,我们使用开源深度学习框架Mxnet开发了一种算法,将图像转换为二进制格式,减小其大小并为每个图像提供标识符。最后,使用均方根传播(RMSProp)和碎片变换优化器对系统进行了优化。
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引用次数: 0
Beamforming Optimization by Binary Genetic Algorithm 基于二进制遗传算法的波束形成优化
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934485
M. Atzemourt, Z. Hachkar, Y. Chihab, A. Farchi
This paper presents a beamforming method based on a binary genetic algorithm. Widely known for their ability to increase the performance of antenna arrays, beamforming techniques are expected to play a major role in 5G systems. For reaching low peaks side lobe level (PSLL) in antenna design, it is necessary to optimize the amplitude weights of a linear antenna array. By optimizing the amplitude weight of the array's elements, a method for achieving a low side lobe level is explored. Utilized is a binary genetic algorithm with single point crossover and roulette wheel selection. The minimum SLL (minimize side lobe levels) for the radiation pattern is the cost function that is employed. The convergence of the optimization algorithm is demonstrated by simulations under Matlab environment and, its utility is shown in getting a desired antenna beam pattern, BGA converges before 50 generations in all the considered cases, We have seen that the level of the secondary lobes reaches nearly −30 dB for all the networks. We also note that the more the size of the antenna array increases, the more the number of iterations necessary for convergence is high.
提出了一种基于二进制遗传算法的波束形成方法。波束成形技术因其提高天线阵列性能的能力而广为人知,预计将在5G系统中发挥重要作用。为了在天线设计中达到低波峰旁瓣电平,必须对线性天线阵列的幅值权重进行优化。通过优化阵列各单元的幅值权重,探索了一种实现低旁瓣电平的方法。采用单点交叉和轮盘选择的二元遗传算法。辐射方向图的最小SLL(最小旁瓣电平)是所采用的代价函数。在Matlab环境下的仿真证明了优化算法的收敛性,并且在获得所需的天线波束方向图方面显示了它的实用性,在所有考虑的情况下,BGA在50代之前收敛,我们已经看到所有网络的次瓣电平达到近- 30 dB。我们还注意到,天线阵列的尺寸越大,收敛所需的迭代次数就越多。
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引用次数: 1
Optimizing Feature Representation via A Nested Network for Object Segmentation 基于嵌套网络的目标分割特征表示优化
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934631
Abdalrahman Alblwi, K. Barner
Automatic object segmentation based on artificial neural networks is a critical task in an array of real-world applications. Localizing and region segmentation is of particular interest, although typical approaches rely on complex networks and/or human interactions. Therefore, various complex networks suffer from suboptimal segmentation due to inaccurate feature extraction. This paper introduces a Multi-Gated Nested Network (MGN-net) that provides precise segmentation performance by capturing relevant contextual information via a channel gating mechanism. Results utilize challenging biomedical image databases, featuring MRI Brain and Chest X-ray images, are presented. The results show that the MGN-net approach subjectively and objectively performs favorably compared to multiple state-of-the-art methods, such as the U2-net and U-net networks.
基于人工神经网络的自动目标分割是一系列实际应用中的关键任务。虽然典型的方法依赖于复杂的网络和/或人类互动,但本地化和区域分割是特别有趣的。因此,由于特征提取不准确,各种复杂网络都会出现次优分割。本文介绍了一种多门控嵌套网络(MGN-net),该网络通过通道门控机制捕获相关上下文信息,从而提供精确的分割性能。结果利用具有挑战性的生物医学图像数据库,具有MRI脑和胸部x线图像,提出。结果表明,与多种最先进的方法(如U2-net和U-net)相比,MGN-net方法在主观上和客观上都表现良好。
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引用次数: 0
A Smooth Approach to the solution of Nonlinear Complementarity Problems involving $mathcal{P}_{0}$-function 涉及$mathcal{P}_{0}$-函数的非线性互补问题的光滑解
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934180
E. Osmani, M. Haddou, N. Bensalem
We present a family of smoothing methods to solve nonlinear complementarity problems (NCPs) involving $mathcal{P}_{0}$-function. Several regularization or approximation techniques like Fisher-Burmeister's method, interior-point methods (IPMs) approaches, or smoothing methods already exist. All the corresponding methods solve a sequence of nonlinear systems of equations and depend on parameters that are difficult to drive to zero. The main novelty of our approach is to consider the smoothing parameters as variables that converge by themselves to zero. We do not need any complicated updating strategy, and then obtain nonparametric algorithms. We prove some global and local convergence results and present several numerical experiments, comparisons, that show the efficiency of our approach.
本文提出了一类求解$mathcal{P}_{0}$-函数非线性互补问题(ncp)的光滑方法。一些正则化或近似技术,如Fisher-Burmeister方法、内点法(IPMs)方法或平滑方法已经存在。所有相应的方法都求解一系列非线性方程组,这些方程组依赖于难以被驱动到零的参数。我们的方法的主要新颖之处在于将平滑参数视为自己收敛于零的变量。我们不需要任何复杂的更新策略,然后得到非参数算法。我们证明了一些全局和局部收敛的结果,并给出了几个数值实验和比较,证明了我们的方法的有效性。
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引用次数: 0
Agent-based Modeling and Simulation of Digital Learning Environment 基于agent的数字化学习环境建模与仿真
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934731
Elhoucine Ouassam, N. Hmina, B. Bouikhalene, H. Hachimi
In this paper, we propose a novel multiscale approach to modeling the Digital Learning Environment (DLE) by the introduction of a design pattern, which links students, educational organizations, resources, teachers, targeted skills, audience characteristics, constraints, and existing environment. For this purpose, we have to define an organizational structure and adopt management strategies to improve the performance of DLE. This organizational structure is an important element that has to be taken into account to simulate a digital learning environment. To facilitate the design of these simulations, we propose an agent-based methodological framework for this complex system.
在本文中,我们提出了一种新的多尺度方法,通过引入一种设计模式来建模数字学习环境(DLE),该模式将学生、教育组织、资源、教师、目标技能、受众特征、约束和现有环境联系起来。为此,我们必须定义组织结构并采用管理策略来提高DLE的性能。这种组织结构是模拟数字学习环境必须考虑的重要因素。为了方便这些模拟的设计,我们提出了一个基于代理的方法框架,为这个复杂的系统。
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引用次数: 0
An Econometric Analysis of the Determinants of Small's Cities' Attractiveness: Evidence from Moroccan Case 小城市吸引力决定因素的计量经济学分析:来自摩洛哥案例的证据
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934146
Khalid Sohaib, Effina Driss, Jouilil Youness
The ultimate goal of this paper is to conduct an exploratory analysis that aims to identify the factors that may influence the residential attractiveness of small cities in Morocco. The contribution was the fruit of the construction of four statistical models (OLS model, Backward regression model, forward stepwise regression, and both ways stepwise regression) aiming to identify the most decisive variables affecting the attractiveness of the population. For this purpose, while aiming to be more exhaustive in the analysis, a diversified battery of socio-economic, spatial, and geographical indicators has been mobilized to conduct structural modeling. The econometrics findings show that the phenomenon of residential attractiveness is quite complex and is subject to the influence of several variables where each has its own effect. However, we have demonstrated that the supply of employment and the development of industrial activity remain the most important factors influencing the territorial attractiveness of small cities in Morocco ($mathrm{p} < 0.001$).
本文的最终目标是进行探索性分析,旨在确定可能影响摩洛哥小城市住宅吸引力的因素。该贡献是建立四个统计模型(OLS模型,向后回归模型,正向逐步回归和双向逐步回归)的结果,旨在确定影响人口吸引力的最决定性变量。为此目的,在力求分析更详尽的同时,动员了多种社会经济、空间和地理指标进行结构建模。计量经济学的研究结果表明,住宅吸引力的现象是相当复杂的,受到几个变量的影响,每个变量都有自己的影响。然而,我们已经证明,就业供应和工业活动的发展仍然是影响摩洛哥小城市地域吸引力的最重要因素($ mathm {p} < 0.001$)。
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引用次数: 1
Using AI and IoT at the Edge of the network 在网络边缘使用人工智能和物联网
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934603
Sanaa Lakrouni, Marouane Sebgui, Slimane Bah
In recent years, IoT devices have been widely used in a variety of sectors such as industry, smart farming, and smart homes. Its application requires performing high computational analysis in real-time. The research era of Artificial Intelligence has witnessed an intense development conducted by millions of research and applications that extend from systems recommendation to video/audio surveillance. AI algorithms have been deployed to IoT data to bring intelligent decisions for IoT applications. These numerous data increase the time of the data transition to the cloud, which becomes the bottleneck of the cloud-based architecture. The edge computing technology brings the AI algorithms to the Edge of the network to improve latency, bandwidth, and data privacy, and guarantee the high accuracy of the AI algorithms. Recently Federated learning (FL) is a machine learning technique that distributes the training among edge devices near to the data source in light of increasing privacy and leveraging from the massive data distributed among numerous edge devices. Therefore, in this paper, we introduce recent research that demonstrates the effectiveness of this approach and present the architectures, models, and methods that implement FL with IoT devices.
近年来,物联网设备已广泛应用于工业、智能农业、智能家居等各个领域。它的应用需要进行实时的高计算分析。人工智能的研究时代见证了数以百万计的研究和应用的激烈发展,从系统推荐到视频/音频监控。人工智能算法已经部署到物联网数据中,为物联网应用带来智能决策。这些大量的数据增加了数据向云传输的时间,成为基于云的架构的瓶颈。边缘计算技术将人工智能算法带到网络边缘,提高时延、带宽和数据隐私性,保证人工智能算法的高精度。最近,联邦学习(FL)是一种机器学习技术,它将训练分布在靠近数据源的边缘设备上,以提高隐私性并利用分布在众多边缘设备上的大量数据。因此,在本文中,我们介绍了最近的研究,证明了这种方法的有效性,并介绍了用物联网设备实现FL的架构、模型和方法。
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引用次数: 0
Power Management Strategy for a Direct Current Hybrid Microgrid based on Doubly Fed Induction Generator and Fuel Cell 基于双馈感应发电机和燃料电池的直流混合微电网电源管理策略
Pub Date : 2022-10-06 DOI: 10.1109/ICOA55659.2022.9934248
Ouassima El qouarti, A. Essadki, Hammadi Laghridat, T. Nasser
In recent years, renewable energies tended to integrate the electricity production grid at different levels, and have become a crucial solution to help mitigate the harmful effect of greenhouse gases and reduce the energy dependence of countries in terms of electricity. Microgrids give a good option to implement these resources in a decentralized manner and expand the electrical grid consistency. In this paper we will model a DC hybrid microgrid combining both Fuel Cell (FC) and Doubly Fed Induction Generator (DFIG) based Wind Turbine (WT) technologies. This microgrid is intended to be capable of guaranteeing the electricity procurement continuity despite of variable load demand and the intermittency aspect of the wind resource. The adopted Power management strategy and controls were emphasized, and the obtained results from MATLAB/Simulink simulation tool support and endorse the presented strategy.
近年来,可再生能源倾向于在不同层次上整合电力生产网络,并已成为帮助减轻温室气体有害影响和减少国家在电力方面的能源依赖的关键解决方案。微电网提供了一个很好的选择,以分散的方式实施这些资源,扩大电网的一致性。在本文中,我们将模拟一个结合燃料电池(FC)和基于双馈感应发电机(DFIG)的风力涡轮机(WT)技术的直流混合微电网。该微电网旨在保证电力采购的连续性,尽管有可变负荷需求和风力资源的间歇性方面。重点介绍了所采用的电源管理策略和控制方法,MATLAB/Simulink仿真工具的仿真结果支持并认可了所提出的策略。
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引用次数: 0
期刊
2022 8th International Conference on Optimization and Applications (ICOA)
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