首页 > 最新文献

2021 11th International Conference on Information Science and Technology (ICIST)最新文献

英文 中文
Impulsive Local Leader-following Consensus and Estimation of Domain of Attraction of Multi-agent Systems with Actuator Saturation 执行器饱和时多智能体系统的脉冲局部领导-跟随一致性及吸引域估计
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440653
Xiaoxiao Lv, Jinde Cao
Under the distributed impulsive control with actuator saturation, the local leader-following consensus problem of linear multi-agent systems with fixed topology is considered in this paper. Based on Lyapunov stability theory, average impulsive interval method and contradiction approach, a developed sufficient condition is obtained. In addition, optimization problem constrained by local leader-following consensus criterion is established in the form of linear matrix inequalities, and solved them by YALMIP to obtain the largest domain of attraction. Finally, a numerical example is proposed to demonstrate the feasibility of the obtained results.
在执行器饱和的分布式脉冲控制下,研究了具有固定拓扑的线性多智能体系统的局部领导-跟随一致性问题。基于李雅普诺夫稳定性理论、平均脉冲区间法和矛盾法,得到了一个完善的充分条件。此外,以线性矩阵不等式的形式建立了局域leader- follower共识准则约束下的优化问题,并利用YALMIP进行求解,以获得最大吸引域。最后,通过数值算例验证了所得结果的可行性。
{"title":"Impulsive Local Leader-following Consensus and Estimation of Domain of Attraction of Multi-agent Systems with Actuator Saturation","authors":"Xiaoxiao Lv, Jinde Cao","doi":"10.1109/ICIST52614.2021.9440653","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440653","url":null,"abstract":"Under the distributed impulsive control with actuator saturation, the local leader-following consensus problem of linear multi-agent systems with fixed topology is considered in this paper. Based on Lyapunov stability theory, average impulsive interval method and contradiction approach, a developed sufficient condition is obtained. In addition, optimization problem constrained by local leader-following consensus criterion is established in the form of linear matrix inequalities, and solved them by YALMIP to obtain the largest domain of attraction. Finally, a numerical example is proposed to demonstrate the feasibility of the obtained results.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"9 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115590730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Observer-Based Adaptive Fuzzy Control for Intelligent Ship Autopilot with State Constraint* 基于观测器的状态约束智能船舶自动驾驶仪自适应模糊控制
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440631
Liyan Zhu, Tie-shan Li
This paper studies the problem of autopilot heading control of intelligent ship with unknown yaw rate and state constraint. For the cases of adaptive fuzzy control, fuzzy logic system (FLS) is adopted to establish the unknown nonlinear function, a fuzzy state observer is constructed to obtain the unknown yaw rate, barrier Lyapunov function ensures that the tracking error is restricted. In the process of designing rudder controller, fuzzy state observer, state constraint are taken into account. Compared with traditional output feedback scheme, the observer-based state constraint control strategy can save more resource effectively. Based on Lyapunov stability theory, adaptive fuzzy approach is proposed to guarantee the desired control objective. Meanwhile, autopilot constrained requirement are also ensured. Finally, the simulation results are provided to illustrate the effectiveness of the proposed methods.
研究了未知横摆角速度和状态约束下的智能船舶自动航向控制问题。针对自适应模糊控制的情况,采用模糊逻辑系统(FLS)建立未知非线性函数,构造模糊状态观测器获取未知横摆角速度,barrier Lyapunov函数保证跟踪误差受到限制。在舵机控制器的设计过程中,考虑了模糊状态观测器和状态约束。与传统的输出反馈方案相比,基于观测器的状态约束控制策略可以有效地节省资源。基于李雅普诺夫稳定性理论,提出了自适应模糊控制方法以保证理想的控制目标。同时,也保证了自动驾驶仪的约束要求。最后给出了仿真结果,验证了所提方法的有效性。
{"title":"Observer-Based Adaptive Fuzzy Control for Intelligent Ship Autopilot with State Constraint*","authors":"Liyan Zhu, Tie-shan Li","doi":"10.1109/ICIST52614.2021.9440631","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440631","url":null,"abstract":"This paper studies the problem of autopilot heading control of intelligent ship with unknown yaw rate and state constraint. For the cases of adaptive fuzzy control, fuzzy logic system (FLS) is adopted to establish the unknown nonlinear function, a fuzzy state observer is constructed to obtain the unknown yaw rate, barrier Lyapunov function ensures that the tracking error is restricted. In the process of designing rudder controller, fuzzy state observer, state constraint are taken into account. Compared with traditional output feedback scheme, the observer-based state constraint control strategy can save more resource effectively. Based on Lyapunov stability theory, adaptive fuzzy approach is proposed to guarantee the desired control objective. Meanwhile, autopilot constrained requirement are also ensured. Finally, the simulation results are provided to illustrate the effectiveness of the proposed methods.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115732733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Collision-free Cooperative Kinematic Guidance Laws for Multiple Unmanned Surface Vehicles Subject to Static and Dynamic Obstacles 静态和动态障碍下多水面无人驾驶车辆的无碰撞协同运动制导律
Pub Date : 2021-05-21 DOI: 10.1109/icist52614.2021.9440643
Zipeng Huang, Lu Liu, Dan Wang, Haoliang Wang, Zhouhua Peng
This paper addresses the collision-free guidance law design for cooperative path following of multiple unmanned surface vehicles in the presence of static and dynamic obstacles. Specially, collision-free cooperative guidance laws are designed at the kinematic level, and a collision avoidance term is introduced into the desired yaw rate. A synchronized formation can be achieved by multiple unmanned surface vehicles, and at the same time the obstacles can be avoided. Theoretical analysis proves that by using presented cooperative guidance laws, the closed-loop system is globally uniformly asymptotically stable and collision can be avoided. Simulation results substantiate the effectiveness of the proposed method.
研究了多水面无人车辆在静态和动态障碍物情况下协同路径跟踪的无碰撞制导律设计。特别地,在运动学层面设计了无碰撞协同制导律,并在期望横摆角速度中引入避碰项。多艘无人水面舰艇可以实现同步编队,同时可以避开障碍物。理论分析证明,采用所提出的协同制导律,闭环系统全局一致渐近稳定,可以避免碰撞。仿真结果验证了该方法的有效性。
{"title":"Collision-free Cooperative Kinematic Guidance Laws for Multiple Unmanned Surface Vehicles Subject to Static and Dynamic Obstacles","authors":"Zipeng Huang, Lu Liu, Dan Wang, Haoliang Wang, Zhouhua Peng","doi":"10.1109/icist52614.2021.9440643","DOIUrl":"https://doi.org/10.1109/icist52614.2021.9440643","url":null,"abstract":"This paper addresses the collision-free guidance law design for cooperative path following of multiple unmanned surface vehicles in the presence of static and dynamic obstacles. Specially, collision-free cooperative guidance laws are designed at the kinematic level, and a collision avoidance term is introduced into the desired yaw rate. A synchronized formation can be achieved by multiple unmanned surface vehicles, and at the same time the obstacles can be avoided. Theoretical analysis proves that by using presented cooperative guidance laws, the closed-loop system is globally uniformly asymptotically stable and collision can be avoided. Simulation results substantiate the effectiveness of the proposed method.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125825157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
A Visual SLAM Image Mismatching Filter Algorithm Based on Progressive Aample Consensus 基于渐进式样本一致性的视觉SLAM图像不匹配滤波算法
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440562
Yuchao Guo, Y. Fan, Gaofeng Pan, C. Song
Visual SLAM based on ORB features will increase the computational pressure of SLAM system due to the large amount of feature extraction and matching computation and the need to screen a large number of mismatched point pairs. It cannot completely eliminate the mismatched point pairs, which will affect the camera positioning accuracy of visual SLAM system to a certain extent. To solve the two questions, the PROSAC algorithm is used, screening point of mismatch on, all matching points by calculation of evaluation function, selection to match point to build the model with the highest quality, through continuous to join interior point, build the final model, screening point pairs of mismatch. Provide high quality data for camera pose estimation and back end optimization of SLAM system. Through the comparison of RANSAC algorithm and PROSAC algorithm false match screening time, as well as tracking error. PROSAC algorithm effectively reduced the time of mismatching screening, with a maximum improvement of 100 times. The tracking error has also improved significantly.
基于ORB特征的可视化SLAM会增加SLAM系统的计算压力,因为需要进行大量的特征提取和匹配计算,并且需要筛选大量不匹配的点对。它不能完全消除不匹配的点对,这将在一定程度上影响视觉SLAM系统的相机定位精度。为了解决这两个问题,采用PROSAC算法,对不匹配点进行筛选,通过计算所有匹配点的评价函数,选择对不匹配点构建质量最高的模型,通过对内部点的连续连接,构建最终模型,筛选对不匹配点。为SLAM系统的相机姿态估计和后端优化提供高质量的数据。通过比较RANSAC算法和PROSAC算法的假匹配筛选时间,以及跟踪误差。PROSAC算法有效地减少了错配筛选的时间,最多可提高100倍。跟踪误差也得到了显著改善。
{"title":"A Visual SLAM Image Mismatching Filter Algorithm Based on Progressive Aample Consensus","authors":"Yuchao Guo, Y. Fan, Gaofeng Pan, C. Song","doi":"10.1109/ICIST52614.2021.9440562","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440562","url":null,"abstract":"Visual SLAM based on ORB features will increase the computational pressure of SLAM system due to the large amount of feature extraction and matching computation and the need to screen a large number of mismatched point pairs. It cannot completely eliminate the mismatched point pairs, which will affect the camera positioning accuracy of visual SLAM system to a certain extent. To solve the two questions, the PROSAC algorithm is used, screening point of mismatch on, all matching points by calculation of evaluation function, selection to match point to build the model with the highest quality, through continuous to join interior point, build the final model, screening point pairs of mismatch. Provide high quality data for camera pose estimation and back end optimization of SLAM system. Through the comparison of RANSAC algorithm and PROSAC algorithm false match screening time, as well as tracking error. PROSAC algorithm effectively reduced the time of mismatching screening, with a maximum improvement of 100 times. The tracking error has also improved significantly.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122336930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Demand Forecasting for Shared Umbrella using BP Neural Network 基于BP神经网络的共享伞需求预测
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440556
Jiayi Zeng, Liping Zhang, Shangwen Peng, Junjie Wang, Qiuhua Tang
Shared umbrella can bring us convenience in rain and snow. But uncertainty umbrella demand and the weather may cause the unbalance for a shared umbrella station. According to the information of the rainfall, temperature and so on, this paper proposed an efficient BP neural network to construct a prediction model for predicting the demand of the shared umbrella. Taking Wuhan city as an example, the experimental results show that the proposed method can improve the prediction accuracy of the demand.
共用雨伞可以在雨雪中给我们带来方便。但不确定的雨伞需求和天气可能会导致共享雨伞站的不平衡。根据降雨、气温等信息,提出了一种高效的BP神经网络,构建了预测共享伞需求的预测模型。以武汉市为例,实验结果表明,该方法可以提高需求预测的精度。
{"title":"Demand Forecasting for Shared Umbrella using BP Neural Network","authors":"Jiayi Zeng, Liping Zhang, Shangwen Peng, Junjie Wang, Qiuhua Tang","doi":"10.1109/ICIST52614.2021.9440556","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440556","url":null,"abstract":"Shared umbrella can bring us convenience in rain and snow. But uncertainty umbrella demand and the weather may cause the unbalance for a shared umbrella station. According to the information of the rainfall, temperature and so on, this paper proposed an efficient BP neural network to construct a prediction model for predicting the demand of the shared umbrella. Taking Wuhan city as an example, the experimental results show that the proposed method can improve the prediction accuracy of the demand.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124667939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ontology-based Defect Causation Analysis for Urban Tunnel Maintenance 基于本体的城市隧道养护缺陷原因分析
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440633
Jiajun Zhang, Juan Du
Urban tunnels is crucial to the function of modern society. The proper defect diagnosis and maintenance of tunnels are critical to the performance of tunnel infrastructure. Recent years, the data-driven causation analysis method is becoming popular, especially the ontology and rule reasoning method. However most exsisting research creat the ontology and reasoning rules mannully and lack of automatic implementation method. The paper use owlready2 package of python to realize the automatic generation of ontology and the automatic retrieval of ontology rules. Based on the methodology, the paper takes the defect causation analysis as the example, automatically generate the defect causation ontology, and automatically called reasoning rules to analyze the causes of tunnel defects. The proposed methodology provides practical value to defect causation analysis of urban infrastructure.
城市隧道对现代社会的功能至关重要。正确的隧道缺陷诊断和维修对隧道基础设施的使用性能至关重要。近年来,数据驱动的因果分析方法逐渐流行起来,尤其是本体和规则推理方法。然而,现有的研究大多是手工创建本体和推理规则,缺乏自动实现的方法。本文利用python的owlready2包实现了本体的自动生成和本体规则的自动检索。基于该方法,本文以缺陷原因分析为例,自动生成缺陷原因本体,并自动调用推理规则对隧道缺陷原因进行分析。该方法对城市基础设施缺陷原因分析具有实用价值。
{"title":"Ontology-based Defect Causation Analysis for Urban Tunnel Maintenance","authors":"Jiajun Zhang, Juan Du","doi":"10.1109/ICIST52614.2021.9440633","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440633","url":null,"abstract":"Urban tunnels is crucial to the function of modern society. The proper defect diagnosis and maintenance of tunnels are critical to the performance of tunnel infrastructure. Recent years, the data-driven causation analysis method is becoming popular, especially the ontology and rule reasoning method. However most exsisting research creat the ontology and reasoning rules mannully and lack of automatic implementation method. The paper use owlready2 package of python to realize the automatic generation of ontology and the automatic retrieval of ontology rules. Based on the methodology, the paper takes the defect causation analysis as the example, automatically generate the defect causation ontology, and automatically called reasoning rules to analyze the causes of tunnel defects. The proposed methodology provides practical value to defect causation analysis of urban infrastructure.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130315379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Complex-valued Joint Eigenvalue Decomposition Based on LU Decomposition and Successive Rotations 基于LU分解和连续旋转的复值联合特征值分解
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440597
Lu-Ming Wang, Yawen Deng, Fei Xiang, Xiaofeng Gong
In this paper, we propose a complex-valued joint eigenvalue decomposition(C-JEVD) algorithm based on LU de-composition and successive rotations. The proposed algorithm factorizes the matrix of eigenvectors into a lower-triangular matrix and an upper-triangular matrix, and update these two matrices using successive rotations. In each rotation, the elementary rotation matrix contains only one complex-valued parameter, which could be easily obtained via solving a cubic equation. Therefore, the proposed algorithm has low complexity. The proposed algorithm is compared with other C-JEVD methods through simulations.
本文提出了一种基于LU分解和连续旋转的复值联合特征值分解(C-JEVD)算法。该算法将特征向量矩阵分解为下三角矩阵和上三角矩阵,并通过连续旋转对这两个矩阵进行更新。在每次旋转中,初等旋转矩阵只包含一个复值参数,该参数很容易通过求解三次方程得到。因此,该算法具有较低的复杂度。通过仿真与其他C-JEVD方法进行了比较。
{"title":"Complex-valued Joint Eigenvalue Decomposition Based on LU Decomposition and Successive Rotations","authors":"Lu-Ming Wang, Yawen Deng, Fei Xiang, Xiaofeng Gong","doi":"10.1109/ICIST52614.2021.9440597","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440597","url":null,"abstract":"In this paper, we propose a complex-valued joint eigenvalue decomposition(C-JEVD) algorithm based on LU de-composition and successive rotations. The proposed algorithm factorizes the matrix of eigenvectors into a lower-triangular matrix and an upper-triangular matrix, and update these two matrices using successive rotations. In each rotation, the elementary rotation matrix contains only one complex-valued parameter, which could be easily obtained via solving a cubic equation. Therefore, the proposed algorithm has low complexity. The proposed algorithm is compared with other C-JEVD methods through simulations.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128097748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Mangrove Information Extraction Based on Multi-source Remote Sensing Images 基于多源遥感影像的红树林信息提取
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440642
Linlin Tan, Cheng Xing, Xinzhe Wang, Jianchao Fan
Mangrove is an important wetland ecosystem in coastal areas. It plays an important role in maintaining the coastal ecological environment, and also provides a guarantee for the survival of various organisms. In the past half century, mangrove has been seriously damaged, so it is very important to find an efficient and accurate method to monitor mangrove changes. The remote sensing technology is an important approach to monitor the dynamic changes of mangrove resources and health status. This paper takes the mangrove in Dandou Ocean of Guangxi province as the research area, uses a variety of optical satellite data sources, analyzes the key features of mangrove remote sensing information recognition, and studies the effective methods of mangrove extraction from different data sources. The experimental results show that the accuracy of mangrove extraction is mainly related to the amount of information in the spectrum feature space and the spatial resolution of the data source, and the difficulty of classification is mainly the distinction between terrestrial plants and mangroves. The accuracy of Sentinel-2A satellite using maximum likelihood classification(MLC) and support vector machine classification(SVM) is very close. Landsat8 satellite with medium and low resolution and large number of spectrum feature space and Gaofen-1 satellite with small number of high spatial resolution spectra are more suitable to be extracted by support vector machine classification. The accuracy of landsat8 satellite image extraction by support vector machine classification is the highest, the overall accuracy is 91.42%, and the kappa coefficient is 0.8819.
红树林是沿海地区重要的湿地生态系统。它对维持沿海生态环境起着重要作用,也为各种生物的生存提供了保障。在过去的半个世纪里,红树林遭到了严重的破坏,因此寻找一种有效、准确的监测红树林变化的方法非常重要。遥感技术是监测红树林资源动态变化和健康状况的重要手段。本文以广西丹豆海红树林为研究区,利用多种光学卫星数据源,分析了红树林遥感信息识别的关键特征,研究了从不同数据源提取红树林的有效方法。实验结果表明,红树林提取的精度主要与光谱特征空间的信息量和数据源的空间分辨率有关,分类难度主要与陆生植物和红树林的区别有关。利用最大似然分类(MLC)和支持向量机分类(SVM)对Sentinel-2A卫星进行分类,精度非常接近。支持向量机分类更适合提取中低分辨率、大量光谱特征空间的Landsat8卫星和少量高空间分辨率光谱的高分一号卫星。支持向量机分类提取landsat8卫星图像的精度最高,总体精度为91.42%,kappa系数为0.8819。
{"title":"Mangrove Information Extraction Based on Multi-source Remote Sensing Images","authors":"Linlin Tan, Cheng Xing, Xinzhe Wang, Jianchao Fan","doi":"10.1109/ICIST52614.2021.9440642","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440642","url":null,"abstract":"Mangrove is an important wetland ecosystem in coastal areas. It plays an important role in maintaining the coastal ecological environment, and also provides a guarantee for the survival of various organisms. In the past half century, mangrove has been seriously damaged, so it is very important to find an efficient and accurate method to monitor mangrove changes. The remote sensing technology is an important approach to monitor the dynamic changes of mangrove resources and health status. This paper takes the mangrove in Dandou Ocean of Guangxi province as the research area, uses a variety of optical satellite data sources, analyzes the key features of mangrove remote sensing information recognition, and studies the effective methods of mangrove extraction from different data sources. The experimental results show that the accuracy of mangrove extraction is mainly related to the amount of information in the spectrum feature space and the spatial resolution of the data source, and the difficulty of classification is mainly the distinction between terrestrial plants and mangroves. The accuracy of Sentinel-2A satellite using maximum likelihood classification(MLC) and support vector machine classification(SVM) is very close. Landsat8 satellite with medium and low resolution and large number of spectrum feature space and Gaofen-1 satellite with small number of high spatial resolution spectra are more suitable to be extracted by support vector machine classification. The accuracy of landsat8 satellite image extraction by support vector machine classification is the highest, the overall accuracy is 91.42%, and the kappa coefficient is 0.8819.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125745714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alternate control time delay systems with input delays 具有输入延迟的交替控制时滞系统
Pub Date : 2021-05-21 DOI: 10.1109/icist52614.2021.9440611
Xinjian Ming, Liyuan Qi, Dan Tu, Wei Zhang, Yuming Feng, B. Onasanya
The alternate control systems have been elaborated in detail and have been applied in many areas, such as smart home, smart transportation, etc. However, although alternate control systems with input delays widely exist in real life, not so much attention has been given to them. This paper mainly studies the stability of alternate control systems with input delays. A new mathematical model of the alternate control system with time delay input is proposed. By using a Lyapunov function and linear matrix inequalities, the exponential stability conditions is given. At last, the effectiveness and feasibility of the method are verified through experimental simulations.
对交替控制系统进行了详细的阐述,并在智能家居、智能交通等诸多领域得到了应用。然而,尽管具有输入延迟的交替控制系统在现实生活中广泛存在,但却没有得到足够的重视。本文主要研究了具有输入时滞的交替控制系统的稳定性问题。提出了一种具有时滞输入的交替控制系统的数学模型。利用李雅普诺夫函数和线性矩阵不等式,给出了系统的指数稳定性条件。最后,通过实验仿真验证了该方法的有效性和可行性。
{"title":"Alternate control time delay systems with input delays","authors":"Xinjian Ming, Liyuan Qi, Dan Tu, Wei Zhang, Yuming Feng, B. Onasanya","doi":"10.1109/icist52614.2021.9440611","DOIUrl":"https://doi.org/10.1109/icist52614.2021.9440611","url":null,"abstract":"The alternate control systems have been elaborated in detail and have been applied in many areas, such as smart home, smart transportation, etc. However, although alternate control systems with input delays widely exist in real life, not so much attention has been given to them. This paper mainly studies the stability of alternate control systems with input delays. A new mathematical model of the alternate control system with time delay input is proposed. By using a Lyapunov function and linear matrix inequalities, the exponential stability conditions is given. At last, the effectiveness and feasibility of the method are verified through experimental simulations.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"183 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132220506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
CLACTA: Comment-Level-Attention and Comment-Type-Awareness for Fake News Detection 虚假新闻检测的评论级别-注意和评论类型意识
Pub Date : 2021-05-21 DOI: 10.1109/ICIST52614.2021.9440601
Yaru Zhang, Xijin J. Tang
There are many popular communication tools for news sharing in recent years. However, propagation of fake news becomes a serious issue concerning the public and government due to openness and rapidity of online communication. It is widely concerned how to automatically detect fake news as soon as possible. Nevertheless, most existing methods do not well utilize comments which contain rich semantic information or ignore their effect. Inspired by the revealing role of some comments to the original post, we propose the neural network model which consists of comment-level-attention (CLA) and comment-type-awareness (CTA) for fake news detection. In CLA, we devise the attention mechanism which considers semantic relation between the post and the comments. Based on attention weights we take the weighted sum of different comment representations for the sample as corresponding comment feature, which can capture key comment information. As similar to stance, we assume comments can gather into several different types naturally. Therefore, in CTA, we store comment type representations by the memory matrix which is learned in the training process of sample stream. Comment feature for the sample is aware of the memory matrix, and then corresponding comment type feature is obtained. We concatenate the above two auxiliary features and learned post feature to help detect fake news. Our validation experiments using the Weibo dataset and Pheme dataset demonstrate the effectiveness of the proposed model.
近年来,有许多流行的新闻分享通讯工具。然而,由于网络传播的开放性和快速性,假新闻的传播成为公众和政府面临的一个严重问题。如何尽快自动检测出假新闻,受到了广泛关注。然而,现有的方法大多没有很好地利用包含丰富语义信息的注释,或者忽略了注释的作用。受一些评论对原帖子的揭示作用的启发,我们提出了由评论级关注(CLA)和评论类型感知(CTA)组成的神经网络模型用于假新闻检测。在CLA中,我们设计了关注机制,该机制考虑了帖子和评论之间的语义关系。基于关注权重,我们将样本不同评论表示的加权和作为相应的评论特征,可以捕获关键评论信息。与立场类似,我们假设注释可以自然地聚集成几种不同的类型。因此,在CTA中,我们通过在样本流的训练过程中学习到的记忆矩阵来存储评论类型表示。对样本的注释特征进行内存矩阵感知,然后得到相应的注释类型特征。我们将以上两个辅助功能和学习过的帖子功能连接起来,帮助检测假新闻。我们使用微博数据集和Pheme数据集进行的验证实验证明了该模型的有效性。
{"title":"CLACTA: Comment-Level-Attention and Comment-Type-Awareness for Fake News Detection","authors":"Yaru Zhang, Xijin J. Tang","doi":"10.1109/ICIST52614.2021.9440601","DOIUrl":"https://doi.org/10.1109/ICIST52614.2021.9440601","url":null,"abstract":"There are many popular communication tools for news sharing in recent years. However, propagation of fake news becomes a serious issue concerning the public and government due to openness and rapidity of online communication. It is widely concerned how to automatically detect fake news as soon as possible. Nevertheless, most existing methods do not well utilize comments which contain rich semantic information or ignore their effect. Inspired by the revealing role of some comments to the original post, we propose the neural network model which consists of comment-level-attention (CLA) and comment-type-awareness (CTA) for fake news detection. In CLA, we devise the attention mechanism which considers semantic relation between the post and the comments. Based on attention weights we take the weighted sum of different comment representations for the sample as corresponding comment feature, which can capture key comment information. As similar to stance, we assume comments can gather into several different types naturally. Therefore, in CTA, we store comment type representations by the memory matrix which is learned in the training process of sample stream. Comment feature for the sample is aware of the memory matrix, and then corresponding comment type feature is obtained. We concatenate the above two auxiliary features and learned post feature to help detect fake news. Our validation experiments using the Weibo dataset and Pheme dataset demonstrate the effectiveness of the proposed model.","PeriodicalId":371599,"journal":{"name":"2021 11th International Conference on Information Science and Technology (ICIST)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134208304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
期刊
2021 11th International Conference on Information Science and Technology (ICIST)
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1