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2018 Eighth International Conference on Information Science and Technology (ICIST)最新文献

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Evaluation of Gradient Descriptors and Dissimilarity Learning for Writer Retrieval 作者检索中梯度描述符的评价与不相似学习
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426179
Mohamed Lamine Bouibed, H. Nemmour, Y. Chibani
In order to take advantage from collections of digitized handwritten documents, effective indexing and retrieval techniques are required. This work focuses on automatic writer retrieval, which is the task of finding in a dataset, all documents written by the same person. Contrary to conventional writer retrieval techniques that are based on dissimilarity measures, we propose to use the SVM classifier to perform the retrieval task. First, local gradient features are used to generate handwritten features. Then, dissimilarities calculated between intra-writer and inter-writer documents are used to train a SVM to allow an automatic retrieval of all the writers documents. Experiments are conducted on CVL and ICDAR 2011 datasets. The performance evaluation of the proposed system is carried out comparatively to the cosine similarity. Results obtained evince a significant improvement offered by SVM, which gives comparable and sometimes better scores than the state of the art.
为了充分利用数字化手写文档,需要有效的索引和检索技术。这项工作的重点是自动作者检索,这是在数据集中查找由同一个人编写的所有文档的任务。与传统的基于不相似性度量的作者检索技术相反,我们建议使用SVM分类器来执行检索任务。首先,利用局部梯度特征生成手写特征。然后,利用计算的写入器内部和写入器之间文档的不相似性来训练支持向量机,以允许自动检索所有写入器文档。在CVL和ICDAR 2011数据集上进行了实验。并与余弦相似度进行了性能评价。获得的结果表明支持向量机提供了显着的改进,它给出了可比较的分数,有时甚至比目前的状态更好。
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引用次数: 4
The Study of Smart Elderly Care System 智慧养老系统研究
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426110
Yu-Hung Lu, Chung-Chih Lin
The rapid aging of the global population has become a topic valued by all countries. At the same time, it also makes the issue of elderly care increasingly important. This paper focuses on elderly care institutions and proposes four care indicators. The four indicators are physiological function tracking, activity domain monitoring, fall prevention, and emergency help. This paper mainly uses smart clothes, BLE components and indoor positioning algorithm for smart elderly care system to collect the data from the residents in their daily life. After collecting the data, we will analyze the data to figure out the indicators we mention above. BLE components also have wearable detection, low power and signal loss warnings from preventing the device problem. Currently, this smart elderly care system is already imported to Taiwan's long-term care institutions.
全球人口快速老龄化已成为各国关注的话题。与此同时,这也使得老年人护理问题变得越来越重要。本文以养老机构为研究对象,提出了四项养老指标。这四项指标分别是生理功能追踪、活动域监测、预防跌倒和紧急救助。本文主要利用智能服装、BLE组件和智能养老系统的室内定位算法,对居民日常生活中的数据进行采集。收集数据后,我们将对数据进行分析,得出我们上面提到的指标。BLE组件还具有可穿戴检测、低功耗和信号丢失预警等功能,可防止设备出现问题。目前,这种智慧养老系统已经引进台湾的长期养老机构。
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引用次数: 8
Comparing Social Influence with Collaborative Influence in Human Flesh Search 人肉搜索中社会影响与协同影响的比较
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426157
Saran Chen, Tao Wang, Yanzhe Feng, Zhong Liu, Jincai Huang
Previous studies believe that the individuals who have great social influence play an important role in the collaborative activity. However, in Human Flesh Search (HFS), which is a typical collaborative activity originated from Chinese online social networks, we do not obtain the same conclusion but find that the correlation between social influence and collaborative influence is weak. Specifically, we first construct two networks from the crawling data, i.e., the social network and collaborative network of HFS participants, and quantify social influence and collaborative influence separately. Then we calculate the correlation between social influence and collaborative influence. Furthermore, we obtain three different types of participants by using BIC measure and k-means++ clustering algorithm and calculate the correlation between social influence and collaborative influence among different types. Although there exist differences in different types, all the results show that the correlation between social influence and collaborative influence is weak.
以往的研究认为,具有较大社会影响力的个体在协作活动中起着重要的作用。然而,在源自中国网络社交网络的典型协同活动——人肉搜索(Human Flesh Search, HFS)中,我们并没有得到相同的结论,而是发现社会影响力与协同影响力之间的相关性较弱。具体而言,我们首先从爬虫数据中构建HFS参与者的社会网络和协作网络两个网络,并分别量化社会影响和协作影响。然后,我们计算了社会影响和协作影响之间的相关关系。在此基础上,利用BIC测度和k- meme++聚类算法得到了三种不同类型的参与者,并计算了不同类型参与者之间社会影响力和协作影响力的相关性。虽然不同类型之间存在差异,但所有结果都表明社会影响与协作影响之间的相关性较弱。
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引用次数: 0
Adaptive Tracking Control of Switched Linear Systems Using Mode-Dependent Average Dwell Time 基于模式相关平均停留时间的切换线性系统自适应跟踪控制
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426176
Shuai Yuan, B. de Schutter, S. Baldi
This paper studies model reference adaptive control for switched linear systems with large parametric uncertainties. An aggregate leakage approach is proposed to develop a novel adaptive law, which overcomes the state-of-the-art assumption of knowing the upper and lower bounds of the parameter uncertainty. In addition, a switching law is developed based on mode-dependent average dwell time scheme, which exploits the information of the known reference model for every subsystem, i.e., average dwell time is realized in a subsystem sense. Based on the proposed time-constraint scheme, switching signals that are less conservative than those based on dwell time and average dwell time can be designed. Global uniform ultimate boundedness of the closed-loop adaptive switched system is guaranteed. Furthermore, the tracking error is shown to be upper bounded and also an ultimate bound is presented. Simulations using NASA GTM aircraft illustrate the proposed method.
研究了具有大参数不确定性的切换线性系统的模型参考自适应控制。提出了一种集料泄漏方法,建立了一种新的自适应律,克服了目前已知参数不确定性上界和下界的假设。此外,基于模式相关的平均停留时间方案建立了切换律,该方案利用了各子系统已知参考模型的信息,即在子系统意义上实现了平均停留时间。基于所提出的时间约束方案,可以设计出比基于停留时间和平均停留时间的开关信号保守性更小的开关信号。保证了闭环自适应切换系统的全局一致最终有界性。进一步证明了跟踪误差有上界,并给出了一个极限界。利用NASA GTM飞机进行的仿真验证了所提出的方法。
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引用次数: 1
Parameter Identification of a Winding Function Based Model for Fault Detection of Induction Machines 基于绕组函数的感应电机故障检测模型参数识别
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426188
H. V. Khang, S. Kandukuri, W. Pawlus, K. Robbersmyr
Prediction of machines' faulty parts is important in industrial applications in order to reduce productivity losses. As far as electrical machines are considered, a model-based fault diagnosis approach is usually used for this purpose. The model is derived from the modified winding function theory and hence, it requires a considerable amount of parameters at various operating conditions in order to be successfully used. However, the complete set of parameters is difficult to be obtained, as manufacturers of electric machines normally provide only the parameters that describe simple motor models (e.g. T-equivalent circuit at rated conditions). Therefore, the current work presents a method that can be used to estimate more detailed motor parameters. In addition, these parameters are then used in an expanded induction motor model which, in turn, is applied to study severity of a broken bar fault in an induction machine.
在工业应用中,对机器故障部件进行预测是降低生产率损失的重要手段。就电机而言,基于模型的故障诊断方法通常用于此目的。该模型是由修正的绕组函数理论推导而来的,因此,它需要在各种操作条件下获得相当多的参数才能成功使用。然而,完整的参数集很难获得,因为电机制造商通常只提供描述简单电机模型的参数(例如额定条件下的t等效电路)。因此,目前的工作提出了一种方法,可用于估计更详细的电机参数。此外,这些参数随后用于扩展的感应电机模型,该模型又用于研究感应电机断条故障的严重程度。
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引用次数: 1
Adaptive Neural Network Control for Consensus of Nonlinear Multi-Agent Systems with Actuator Faults 带有执行器故障的非线性多智能体系统一致性的自适应神经网络控制
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426082
Gaosheng Zhang, Qichao Ma, Jiahu Qin, Yu Kang, W. Zheng
This paper investigates the fault tolerant consensus problem for a class of nonlinear multi-agent systems with actuator faults. The dynamics of the multi-agent systems are unknown nonlinear and nonidentical. The types of actuator fault include partial loss of effectiveness fault and biased fault. The main idea of the fault tolerant control adopted in this paper is the adaptive control. The control method used is a neural network based adaptive control which has a better adaptability than the traditional adaptive control. The developed adaptive neural network consensus protocol is proved to perform well with respect to the system nonlinear dynamics and actuator faults of the agent. Finally, numerical simulation on multi-agent system of four Chen's chaotic systems is performed to illustrate the effectiveness of the investigated adaptive neural network consensus protocol.
研究一类具有执行器故障的非线性多智能体系统的容错一致性问题。多智能体系统的动力学是未知的、非线性的和不相同的。执行器故障的类型包括部分失效故障和偏置故障。本文采用的容错控制的主要思想是自适应控制。所采用的控制方法是基于神经网络的自适应控制,比传统的自适应控制具有更好的适应性。结果表明,所提出的自适应神经网络共识协议对于系统的非线性动力学和智能体的执行器故障具有良好的处理效果。最后,对四种陈混沌系统的多智能体系统进行了数值仿真,验证了所研究的自适应神经网络共识协议的有效性。
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引用次数: 2
Two-Dimensional-Reduction Random Forest 二维约简随机森林
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426168
Shuquan Ye, Zhiwen Yu, Jiaying Lin, Kaixiang Yang, Dan Dai, Zhi-hui Zhan, Wei-neng Chen, Jun Zhang
Random forest (RF) is a competitive machine learning theorem, while one of the big challenges for it is imbalanced real-world data. A Two-dimensional-reduction RF (2DRRF) is presented in this paper, which is optimized based on traditional RF and three innovation points as follows. To improve RF in terms of performance on imbalanced data, a two-dimensional-reduction approach is created. Then, a modified T-link is proposed focusing on detecting and reducing safe samples. Moreover, a biased sampling manner is employed to build up optimal training datasets. Across 13 imbalanced datasets from KEEL-dataset with imbalance-ratio ranging from 6.38 to 129.44, experiments are carried out indicating that 2DRRF steadily holds advantages over the other two relevant implementations of RF in terms of accuracy, recall, precision and F-value.
随机森林(Random forest, RF)是一个有竞争力的机器学习定理,而它面临的一大挑战是现实世界数据的不平衡。本文提出了一种二维简化射频(2DRRF),它在传统射频的基础上进行了优化,并进行了以下三个创新点。为了提高射频在不平衡数据上的性能,创建了一种二维降维方法。然后,提出了一种改进的T-link,重点是检测和减少安全样本。此外,采用有偏抽样的方法构建最优训练数据集。在龙骨数据集(KEEL-dataset)的13个不平衡数据集(失衡比为6.38 ~ 129.44)上进行的实验表明,2DRRF在正确率、召回率、精密度和f值方面稳定地优于其他两种相关的RF实现。
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引用次数: 0
Three-Dimensional Memristor-Based Crossbar Architecture for Capsule Network Implementation 基于三维忆阻器的跨栅结构胶囊网络实现
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426119
Yi Huang, Rui Hu, Z. Zeng
Although the Capsule Network (CapsNet) has a better proven performance for the recognition of overlapping digits than Convolutional Neural Networks (CNNs), a large number of matrix-vector multiplications between lower-level and higher-level capsules impede efficient implementation of the CapsNet on conventional hardware platforms. Since three-dimensional (3-D) memristor crossbars provide a compact and parallel hardware implementation of neural networks, this paper provides an architecture design to accelerate convolutional and matrix operations of the CapsNet. By using 3-D memristor crossbars, the PrimaryCaps, DigitCaps, and convolutional layers of a CapsNet perform the matrix-vector multiplications in a highly parallel way. Simulations are conducted to recognize digits from the USPS database and to analyse the work efficiency of the proposed circuits. The proposed design provides a new approach to implement the CapsNet on memristor-based circuits.
尽管胶囊网络(CapsNet)在重叠数字识别方面比卷积神经网络(cnn)具有更好的性能,但低级和高级胶囊之间的大量矩阵向量乘法阻碍了CapsNet在传统硬件平台上的有效实现。由于三维(3-D)忆阻交叉栅提供了神经网络的紧凑并行硬件实现,因此本文提供了一种加速CapsNet卷积和矩阵运算的架构设计。通过使用3-D忆阻交叉棒,CapsNet的PrimaryCaps、DigitCaps和卷积层以高度并行的方式执行矩阵向量乘法。通过仿真对USPS数据库中的数字进行了识别,并分析了所提电路的工作效率。提出的设计为在基于忆阻器的电路上实现CapsNet提供了一种新的方法。
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引用次数: 5
Memristor-Based Neuron Circuit with Adaptive Firing Rate 基于记忆电阻的自适应放电速率神经元电路
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426182
Xinming Shi, Z. Zeng
Adaptive firing rate of neuron plays an indispensable role in stabilizing the neural system, which means that the firing rate of neuron could be adjusted adaptively within an inherent range. In this paper, two aspects of implementing the adaptive firing rate are proposed at the circuit level. First, a memristor model is used in the neuron circuit to represent membrane sensitivity. Second, the threshold voltage of neuron circuit can be adjusted adaptively to change the firing rate. Combined these two methods, the adaptive firing rate of neuron circuit is realized effectively, which is in accordance with its biological counterpart. Furthermore, the proposed neuron circuit is applied in the spiking neural network to verify its functionality, where pattern recognition could be realized. All the simulations are carried out on PSPICE.
神经元的自适应放电速率对神经系统的稳定起着不可缺少的作用,即神经元的放电速率可以在一个固有的范围内自适应调节。本文从电路层面提出了实现自适应发射速率的两个方面。首先,在神经元回路中使用忆阻器模型来表示膜灵敏度。其次,神经元回路的阈值电压可以自适应调节,从而改变放电速率。将这两种方法结合起来,有效地实现了神经元回路的自适应放电速率,与生物对应物相一致。此外,将所提出的神经元电路应用于脉冲神经网络,验证其功能,从而实现模式识别。所有的仿真都在PSPICE上进行。
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引用次数: 2
Weighted H∞ Performance Analysis of Nonlinear Stochastic Switched Systems with State Dependent Noise: A Mode-Dependent Average Dwell Time Method 具有状态相关噪声的非线性随机开关系统的加权H∞性能分析:一种模式相关的平均停留时间方法
Pub Date : 2018-06-01 DOI: 10.1109/ICIST.2018.8426073
Xiushan Jiang, Senping Tian, Tianliang Zhang, Weihai Zhang
This paper is concerned with the issues of weighted H∞ performance of a class of stochastic switched affine nonlinear systems. The stochastic system considered in the literature is with state dependent noise. The switching strategy is about mode-dependent average dwell time (MDADT) approach, which is more general than the average dwell time (ADT) approach by considering each subsystem with its own ADT. A sufficient condition is obtained to guarantee the considered system with all stable subsystems achieve the exponential stability in mean square sense and a weighted H∞ performance. Finally, some remarks concludes this paper.
研究了一类随机切换仿射非线性系统的加权H∞性能问题。文献中考虑的随机系统具有状态相关噪声。该切换策略是基于模式相关的平均停留时间(MDADT)方法,该方法通过考虑每个子系统各自的平均停留时间(ADT),比平均停留时间(ADT)方法更通用。得到了所有子系统稳定的被考虑系统均方指数稳定和加权H∞性能的充分条件。最后,对本文作了总结。
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引用次数: 3
期刊
2018 Eighth International Conference on Information Science and Technology (ICIST)
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