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2020 International Conference on Intelligent Systems and Computer Vision (ISCV)最新文献

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Knowledge components detection in User-Generated Content 用户生成内容中的知识成分检测
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204188
Houda Sekkal, Naila Amrous, S. Bennani
There is knowledge in user generated content that can be extracted and mined to be reused. Our work is focusing on knowledge extraction from user-generated content present in online communities. In this article, we propose an approach to extract elements of knowledge from user-generated content using ATM (Automatic terms recognition). The obtained results show the effectiveness of the process in extracting useful solutions to problems discussed by the online community members.
用户生成内容中的知识可以被提取和挖掘以重用。我们的工作重点是从在线社区中用户生成的内容中提取知识。在本文中,我们提出了一种使用ATM(自动术语识别)从用户生成的内容中提取知识元素的方法。得到的结果表明,该过程在为在线社区成员讨论的问题提取有用的解决方案方面是有效的。
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引用次数: 1
Controller design for delta operator time-delay systems subject to actuator saturation 受致动器饱和影响的delta算子时滞系统的控制器设计
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204303
Ouarda Lamrabet, E. Tissir, F. E. Haoussi
In this paper, the problem of controller design is studied for a class of delta operator systems subject actuator saturation and time-varying state delay. Our main attention is to approximate the time-varying delay by using the three term approximation method. On the basis of the scaled small gain (SSG) theorem, input-output (IO) approach, Lyapunov-Krasovskii functional and Wirtinger-based inequality, a new set of sufficient conditions in terms of linear matrix inequalities is obtained to not only ensure the existence of the desired state feedback control law, but also cover the issues of actuator saturation and performance constraints. Finally, the advantages and the feasibility of the proposed method are demonstrated by the numerical examples.
研究了一类具有执行器饱和和时变状态延迟的增量算子系统的控制器设计问题。我们主要关注的是用三项逼近法来逼近时变延迟。基于比例小增益(SSG)定理、输入输出(IO)方法、Lyapunov-Krasovskii泛函和基于wirtinger的不等式,得到了一组新的线性矩阵不等式的充分条件,不仅保证了期望状态反馈控制律的存在,而且涵盖了执行器饱和和性能约束问题。最后,通过数值算例验证了所提方法的优越性和可行性。
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引用次数: 1
Leveraging topic feature for followee recommendation on Twitter network 利用Twitter网络的主题功能推荐关注者
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204041
Brahim Dib, Fahd Kalloubi, E. Nfaoui, Abdelhak Boulaalam
With the fast growth of the Twitter network, users are overwhelmed by the huge amount of information, which is shared via the follower/followee social network, to overcome this problem, finding like-minded users becomes a very important task. Thus, a system to assist users in such a task is recommended. In this paper, we propose a followee recommendation system by leveraging the topic feature, for topic modeling, and the follower/followee topology, searching for similar users to recommend, based on topic similarities. To show the effectiveness of our approach, we evaluate it using a dataset ingathered from the Twitter platform. The experiment results indicate that our model outperforms the lexical-based [reference?] approach and semantic-based approach [reference?], achieving a recall value of more than 23% on recommending 10 followees, proving that dealing with users’ topics of interest in microblogging websites content is more efficient than semantic and lexical features.
随着Twitter网络的快速发展,用户被通过追随者/追随者社交网络分享的海量信息所淹没,为了克服这一问题,寻找志同道合的用户成为一项非常重要的任务。因此,建议使用一个系统来协助用户完成这样的任务。在本文中,我们提出了一个追随者推荐系统,利用主题特征进行主题建模,并利用追随者/追随者拓扑,根据主题相似度搜索相似的用户进行推荐。为了展示我们方法的有效性,我们使用从Twitter平台收集的数据集来评估它。实验结果表明,我们的模型优于基于词汇的[reference?]方法和基于语义的方法[参考文献?],推荐10个关注者的召回值超过23%,证明处理微博网站内容中用户感兴趣的话题比处理语义和词汇特征更有效。
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引用次数: 2
Blind Image Zero-Watermarking Algorithm Based on Radial Krawtchouk Moments and Chaotic System 基于径向克rawtchouk矩和混沌系统的盲图像零水印算法
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204071
M. Yamni, H. Karmouni, A. Daoui, O. El Ogri, M. Sayyouri, H. Qjidaa
Image watermarking systems are frequently used tools for copyright protection against unauthorized use of images in unsecured spaces. The conventional method is to embed a copyright mark (watermark) in the original image. However, this strategy is not suitable for sensitive images such as medical, satellite, texture and remote sensing images, etc., because the integrated watermark strongly affects the results of its application tasks. For copyright protection of this type of images, this paper proposes a robust blind zero-watermarking algorithm based on Krawtchouk Radial Moments and a chaotic system. This algorithm does not integrate any information into the original image and satisfactorily ensures robustness against various common image processing attacks and geometric distortions. The experimental study uses different categories of images to evaluate and compare the proposed algorithm with other watermarking and zero-watermarking algorithms in terms of robustness against various image attacks.
图像水印系统是版权保护的常用工具,用于防止在不安全的空间中未经授权使用图像。传统的方法是在原始图像中嵌入版权标记(水印)。但该策略不适用于医学、卫星、纹理和遥感等敏感图像,因为集成水印会强烈影响其应用任务的结果。为了对这类图像进行版权保护,本文提出了一种基于克劳tchouk径向矩和混沌系统的鲁棒盲零水印算法。该算法不将任何信息整合到原始图像中,能够很好地保证对各种常见图像处理攻击和几何畸变的鲁棒性。实验研究使用不同类别的图像来评估和比较所提出的算法与其他水印和零水印算法对各种图像攻击的鲁棒性。
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引用次数: 6
Study, Design and Simulation of an Array Antenna for Base Station 5G 5G基站阵列天线的研究、设计与仿真
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204261
Yassine El Hasnaoui, T. Mazri
Patch array antennas are widely used in various applications, namely, wireless communications networks, satellite telecommunications, radar systems, global positioning systems, and telemedicine applications. The purpose of this article is to design and simulate, using the simulation software ADS (Advanced Design System), so we designed a rectangular 1 patch antenna powered by a microstrip line with notch, the results obtained were transformed to a 2 patches array and then to 4 patches powered first in parallel using a power divider. The objective is to achieve: a high directivity of the antenna with better gain and reduced losses by reflection, we analyzed the results for the three coil arrays (1 patch, 2 patch, and 4 patch coil), found that the 4 patch array provides better results than the 1 and 2 patch array, because they show an increase in directivity and gain with a very large bandwidth.
贴片阵列天线广泛应用于无线通信网络、卫星通信、雷达系统、全球定位系统和远程医疗等领域。本文的目的是设计和仿真,利用仿真软件ADS (Advanced design System),设计了一个矩形1贴片天线,由带陷波的微带线供电,得到的结果转换成2贴片阵列,然后再转换成4贴片,先用功率分路器并联供电。我们的目标是实现:高指向性的天线具有更好的增益和减少反射损耗,我们分析了三种线圈阵列(1个贴片,2个贴片和4个贴片线圈)的结果,发现4个贴片阵列提供了比1和2个贴片阵列更好的结果,因为它们显示出指向性和增益的增加与非常大的带宽。
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引用次数: 7
Observer Design for a Class of Discrete-Time Takagi-Sugeno Models with Unmeasurable Premise Variables: Application to an Asynchronous Motor 一类具有不可测前提变量的离散时间Takagi-Sugeno模型的观测器设计:在异步电动机中的应用
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204333
Ilham Hmaiddouch, M. Essabre, A. Assoudi, J. Soulami, E. Yaagoubi
A new fuzzy observer design for a class of discrete-time Takagi-Sugeno models (DTSMs) when the premise variables are not accessible is proposed in this paper. Using the Lyapunov theory, convergence conditions of this observer design are obtained and expressed in term of linear matrix inequalities (LMIs). Finally, an application to a DTSM of an asynchronous motor is given to illustrate the effectiveness of the proposed fuzzy observer design.
针对一类前提变量不可达的离散时间Takagi-Sugeno模型,提出了一种新的模糊观测器设计方法。利用李雅普诺夫理论,得到了该观测器设计的收敛条件,并用线性矩阵不等式(lmi)表示。最后,通过对异步电机DTSM的应用,说明了模糊观测器设计的有效性。
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引用次数: 2
A sensor fault detection scheme of DFIG-based wind turbine using deep auto-encoder approach 一种基于深度自编码器的dfig风电机组传感器故障检测方案
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204154
A. E. Bakri, S. Sefriti, I. Boumhidi
The reliability of the wind turbine doubly-fed induction generator (DFIG) is of paramount concern for adequate power production. This paper investigates an effective fault detection scheme for DFIG using the deep auto-encoder (DAE) structure. The methods contain three main steps: first, the measurement of the stator currents and voltages directly presented to the DAE to capture the characteristics of the signals effectively. Second, using those features, a neural network model is used to detect faults affecting the stator immediately. Then, a binary decision logic proposed for isolation. The results confirm the method efficiency, rapidity, robustness against the occurrence of multiple faults in the presence of measurement noise and unknown inputs.
风力发电机双馈感应发电机(DFIG)的可靠性是保证足够发电量的首要问题。本文研究了一种基于深度自编码器(deep auto-encoder, DAE)结构的DFIG故障检测方案。该方法主要包括三个步骤:首先,测量直接呈现给DAE的定子电流和电压,有效地捕获信号的特征。其次,利用这些特征,利用神经网络模型对影响定子的故障进行即时检测。然后,提出了一种用于隔离的二元决策逻辑。结果表明,该方法在存在测量噪声和未知输入的情况下,具有高效、快速和抗多故障的鲁棒性。
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引用次数: 0
Segmentation of medical images for the extraction of brain tumors: A comparative study between the Hidden Markov and Deep Learning approaches 医学图像分割用于脑肿瘤提取:隐马尔可夫和深度学习方法的比较研究
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204319
Soukaina El Idrissi El kaitouni, H. Tairi
Malignant brain tumors are one of the leading causes of death in adults and children. To identify a brain tumor, an MRI image is acquired and analyzed manually by an expert to find lesions. This procedure takes time and the intra and inter expert variations for the same case vary a lot. To overcome these problems, many automatic and semi-automatic methods have been proposed in recent years to help practitioners make decisions. The advent of Deep Learning methods and their success in many applications such as image classification has helped to promote Deep Learning in the analysis of medical images. In this paper, we will present two methods for the detection of brain tumors in medical images. The first is based on Deep Learning through the U-net architecture that has proven its robustness vis-vis the segmentation of images, especially medical images. The results obtained will be compared by a second method that we have published in another article [1], which uses LBP and k-means techniques. The classes found are improved using the Markov method, by calculating the class correlation. The comparison was made on the same BraTS2019 dataset [2], which will give us an idea of the performance of each.
恶性脑肿瘤是导致成人和儿童死亡的主要原因之一。为了识别脑肿瘤,需要获得MRI图像并由专家手动分析以发现病变。这一过程需要时间,而且同一案例的专家内部和专家之间的差异也很大。为了克服这些问题,近年来提出了许多自动和半自动的方法来帮助从业者做出决策。深度学习方法的出现及其在图像分类等许多应用中的成功有助于促进深度学习在医学图像分析中的应用。在本文中,我们将介绍两种检测医学图像中脑肿瘤的方法。第一种是基于深度学习的U-net架构,该架构已经证明了其在图像分割方面的鲁棒性,尤其是医学图像。得到的结果将通过我们在另一篇文章[1]中发表的第二种方法进行比较,该方法使用LBP和k-means技术。通过计算类的相关性,利用马尔可夫方法对发现的类进行改进。比较是在相同的BraTS2019数据集[2]上进行的,这将使我们对每个数据集的性能有一个了解。
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引用次数: 4
Toward Classification of Arabic Manuscripts Words Based on the Deep Convolutional Neural Networks 基于深度卷积神经网络的阿拉伯语手抄本词分类研究
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204305
Marouan Elmansouri, Noureddine El Makhfi, Badraddine Aghoutane
Deep learning is an area that has seen many developments in recent years. One of these algorithms that have provided good results is Deep Convolutional Neural Networks (DCNN). It is proven to be effective in various fields such as natural language processing, pattern recognition, computer vision, object detection in images, etc. Despite the development of these technologies, Arabic manuscripts in digital libraries still use traditional indexing methods based on metadata, annotation or transcription. In this article, we propose two methods of word classification based on deep learning, the first one uses a simple Neural Network (DNN) and the last one uses a Convolutional Neural Network (DCNN). The idea is to segment words of Arabic manuscripts images and predict the class of each word. The experimental results show the efficient of this classification system based on the DCNN. By comparing the results obtained, we can observe that the DCNN method provides excellent results than those obtained with the DNN method.
深度学习是近年来取得许多发展的一个领域。其中一种提供了良好结果的算法是深度卷积神经网络(DCNN)。它被证明在自然语言处理、模式识别、计算机视觉、图像中的目标检测等各个领域都是有效的。尽管这些技术得到了发展,数字图书馆中的阿拉伯语手稿仍然使用传统的基于元数据、注释或转录的索引方法。在本文中,我们提出了两种基于深度学习的词分类方法,第一种方法使用简单神经网络(DNN),最后一种方法使用卷积神经网络(DCNN)。这个想法是分割阿拉伯语手稿图像中的单词,并预测每个单词的类别。实验结果表明,基于DCNN的分类系统是有效的。通过比较得到的结果,我们可以观察到DCNN方法比DNN方法提供了更好的结果。
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引用次数: 4
Sharing Emotions in the Distance Education Experience: Attitudes and Motivation of University Students 远程教育体验中的情感分享:大学生的态度与动机
Pub Date : 2020-06-01 DOI: 10.1109/ISCV49265.2020.9204094
K. Slimani, S. Bourekkadi, R. Messoussi, Y. Ruichek, R. Touahni
Learning nowadays is fast, modern, and very connected but this might yield a short attention span and lack of focus. On the other hand, emotions are a fundamental partner of the human’s cognition, creativity, and decision-making. For instance, neuroscience and brain imaging confirm that the absence of normal emotional responses could affect one’s critical decisions in life though this person has complete cognitive abilities. Meanwhile, due to the importance of emotions, the aim of this study was to examine the attitudes of students toward the reception of their teammates’ emotions during a distance collaborative work. A total of 244 university students participated in this study representing various Moroccan universities. A mixed methods design was used to collect data, which were analyzed using the SPSS software. The results confirmed that participants have a positive attitude toward sharing their emotions. Moreover, the findings displayed the significance of sharing emotions because this might help enriching communication, ensuring quality work, and generating participants’ satisfaction.
如今的学习是快速、现代和紧密联系的,但这可能会导致注意力持续时间短,注意力不集中。另一方面,情感是人类认知、创造和决策的基本伙伴。例如,神经科学和脑成像证实,缺乏正常的情绪反应可能会影响一个人在生活中的关键决定,尽管这个人有完整的认知能力。同时,由于情绪的重要性,本研究的目的是考察学生在远程协作工作中对队友情绪的接受态度。共有244名大学生代表摩洛哥各所大学参加了这项研究。采用混合方法设计收集数据,使用SPSS软件进行分析。结果证实,参与者对分享自己的情绪持积极态度。此外,研究结果显示了分享情绪的重要性,因为这可能有助于丰富沟通,确保工作质量,并产生参与者的满意度。
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引用次数: 6
期刊
2020 International Conference on Intelligent Systems and Computer Vision (ISCV)
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