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Real-time depth camera tracking with geometrically stable weight algorithm

OPTICAL ENGINEERING 2017年第3期56卷 033104-033104页

作者： Fu, Xingyin Zhu, Feng Qi, Feng Wang, Mingming Chinese Acad Sci Shenyang Inst Automat Shenyang Peoples R China Chinese Acad Sci Shenyang Inst Automat THz Imaging Grp Shenyang Peoples R China Univ Chinese Acad Sci Beijing Peoples R China Chinese Acad Sci Key Lab Optoelect Informat Proc Shenyang Peoples R China Key Lab Image Understanding & Comp Vis Shenyang Liaoning Provin Peoples R China

We present an approach for real-time camera tracking with depth stream. Existing methods are prone to drift in sceneries without sufficient geometric information. First, we propose a new weight method for an iterative closest point algorithm commonly used in real-time dense mapping and tracking systems. By detecting uncertainty in pose and increasing weight of points that constrain unstable transformations, our system achieves accurate and robust trajectory estimation results. Our pipeline can be fully parallelized with GPU and incorporated into the current real-time depth camera tracking system seamlessly. Second, we compare the state-of-theart weight algorithms and propose a weight degradation algorithm according to the measurement characteristics of a consumer depth camera. Third, we use Nvidia Kepler Shuffle instructions during warp and block reduction to improve the efficiency of our system. Results on the public TUM RGB-D database benchmark demonstrate that our camera tracking system achieves state-of-the-art results both in accuracy and efficiency. (C) 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)

关键词： camera tracking weight algorithm shuffle depth camera reduction

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Non-singular complexiton, singular complexiton and complex multiple soliton solutions to the (3+1)-dimensional nonlinear evolution equation

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MATHEMATICAL METHODS IN THE APPLIED SCIENCES 2024年第8期47卷 6946-6961页

作者： Wang, Kang-Jia Shi, Feng Xu, Peng Li, Shuai Henan Polytech Univ Sch Phys & Elect Informat Engn Jiaozuo Peoples R China Henan Polytech Univ Sch Phys & Elect Informat Engn Jiaozuo 454003 Peoples R China

This research mainly concerned with some new solutions of the (3 + 1)-dimensional nonlinear evolution equation (NEE). First, we extract the resonant multiple soliton solutions (RMSSs) by taking advantage of the linear superposition principle (LSP) and weight algorithm (WA). Then the non-singular complexiton and singular complexiton solutions are developed by introducing pairs of the conjugate parameters. Besides, the complex multiple-soliton solutions are also explored with the aid of the bilinear approach. The graph descriptions of the attained solutions are paraded to show the dynamical properties. The outcomes of this work are all new and are desirous to bring some new perspective to the investigation of the complexiton solutions to the other partial differential equations (PDEs).

关键词： complex multiple soliton solutions linear superposition principle non-singular complexiton solutions singular complexiton solutions weight algorithm

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Timekeeping algorithm based on the cooperative covariance matrix of clock differences

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GPS SOLUTIONS 2023年第1期27卷 1页

作者： Wang, Xiaobin Han, Chunhao Yang, Yuanxi Space Engn Univ Beijing 101416 Peoples R China Beijing Satellite Nav Ctr Beijing 100094 Peoples R China Chinese Acad Sci Natl Astron Observ Beijing 100012 Peoples R China Xian Res Inst Surveying & Mapping Xian 710054 Peoples R China State Key Lab Geoinformat Engn Xian 710054 Peoples R China

Most composite atomic time scales (TA) are generated by the weighted average algorithm in which the weight of each clock is usually determined by its performance with reference to TA itself. Then, there will be significant correlations between the clocks and the calculated TA in the case of the ensemble composed of a few clocks, which may lead to a large deviation between the estimated and the deserved weight. A new weight algorithm is proposed based on the cooperative covariance matrix of clock differences in the ensemble. The cooperative variance matrix consisting of the instability between any two clocks in the ensemble is given to estimate the performance of each clock using the harmonic average method. The new algorithm was applied to simulated and real data to generate timescales with no human intervention, such as maximum weight setting.

关键词： Timekeeping Composite timescales weight algorithm Atomic clock ensemble

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SLA-aware resource scheduling algorithm for cloud storage

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EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING 2020年第1期2020卷 1-10页

作者： Wang, Yong Tao, Xiaoling Zhao, Feng Tian, Bo Sai, Akshita Maradapu Vera Venkata Guilin Univ Elect Technol Guangxi Coll & Univ Key Lab Cloud Comp & Complex Guilin Peoples R China Xidian Univ State Key Lab Integrated Serv Networks ISN Xian Peoples R China Guilin Univ Elect Technol Guangxi Cooperat Innovat Ctr Cloud Comp & Big Dat Guilin Peoples R China Georgia State Univ Dept Comp Sci Atlanta GA 30303 USA

Cloud computing is a novel computing paradigm, which connects plenty of computing resources and storage resources via Internet. Cloud computing provides a number of high-quality services, such as cloud storage, outsourcing computing, and on-demand self-service, which have been widely accepted by the public. In cloud computing, by submitting their tasks to cloud, plenty of applications share huge computation and storage resources. However, how to schedule resource efficiently is a big challenge in cloud *** this paper, we propose a SLA-aware resource algorithm to enable cloud storage more efficiently. In our scheme, we take advantage of the back-end node space utilization and I/O throughput comprehensively simultaneously. We compare and contrast the existing scheduling storage policies by implementing those algorithms. The extensive tests show that our algorithm achieves a considerable improvement in terms of violation rate and the number of used hosts.

关键词： Cloud storage SLA Scheduling algorithm weight algorithm OpenStack

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Non-singular complexiton, singular complexiton and complex N-soliton solutions of the new extended (3+1)-dimensional Boiti-Leon-Manna-Pempinelli equation

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PHYSICA SCRIPTA 2024年第3期99卷 035251-035251页

作者： Wang, Kang-Jia Shi, Feng Henan Polytech Univ Sch Phys & Elect Informat Engn Jiaozuo 454003 Peoples R China

The central target of this work is to extract some novel exact solutions of the new extended (3+1)-dimensional Boiti-Leon-Manna-Pempinelli equation (BLMPE) for the incompressible fluid. By applying the weight algorithm (WA) and linear superposition principle (LSP), we construct two sets of the complexiton solutions, which are the non-singular complexiton and singular complexiton solution via introducing the pairs of the conjugate parameters. In addition, we also explore the complex N-soliton solutions (CNSSs) via the Hirota bilinear equation (HBE) that is developed by the Cole-Hopf transform (CHT). The outlines of the corresponding exact solutions are presented graphically. As far as the information currently available, the derived solutions in this exploration are all new and are expected to enable us to investigate the dynamic characteristics of the considered equation better.

关键词： singular complexiton solutions non-singular complexiton solutions weight algorithm complex N-soliton solutions linear superposition principle

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A Multidimensional Trust Evaluation Mechanism for Improving Network Security in Fog Computing

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IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS 2024年第12期20卷 14287-14296页

作者： Liu, Xiao Tan, Zhencai Liang, Li Li, Gaoxiang Guangxi Univ Guangxi Key Lab Multimedia Commun & Network Techn Guangxi Coll & Univ Key Lab Multimedia Commun & I Sch Comp Elect & Informat Nanning 530004 Peoples R China Guangxi Univ Guangxi Key Lab Power Syst Optimizat & Energy Tec Sch Elect Engn Nanning 530004 Peoples R China

Nodes in fog computing are easily captured since they are generally resource-constraint and usually work in open and unprotected environments. In this article, a multidimensional trust fusion preference (MTFP) strategy is proposed to detect the malicious node, which mines and utilizes multiple factors that affect trust evaluation. First, the service rating gaps between the self-evaluation and other evaluation in a historical sliding window are calculated and differentially used to alleviate the behavior sparse problem of direct trust evaluation. In addition, a multiperspective weight algorithm is designed to improve the rationality of recommendation trust. Moreover, a reward and punishment factor are designed and incorporated into global trust calculation to enhance the reliability of trust evaluation. Compared with the existing mechanism model method of trust evaluation, the proposed MTFP strategy uses more node information, which can improve the detection precision and recall of malicious nodes at the same time. Finally, the experimental results validate the effectiveness of the proposed trust evaluation method.

关键词： Fog computing multidimensional trust trust evaluation weight algorithm

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Resonant multiple wave, periodic wave and interaction solutions of the new extended (3+1)-dimensional Boiti-Leon-Manna-Pempinelli equation

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NONLINEAR DYNAMICS 2023年第17期111卷 16427-16439页

作者： Wang, Kang-Jia Henan Polytech Univ Sch Phys & Elect Informat Engn Jiaozuo 454003 Peoples R China

This paper is concerned with the new extended (3 + 1)-dimensional Boiti-Leon-Manna-Pempinelli equation (BLMPE), which is regarded as an extension of the well-known (3 + 1)-dimensional Boiti-Leon-Manna-Pempinelli equation and acts a key role in the incompressible fluid. By means of the Cole-Hopf transform, the Hirota bilinear equation of the studied equation is developed. Then based on the Hirota bilinear equation, we give a detailed investigation into the new exact solutions of the BLMPE. Firstly, the linear superposition principle combined with the weight algorithm is utilized to construct the resonant multiple wave solutions by introducing the parameterization for the wave numbers and frequencies. Secondly, the new homoclinic approach is applied to seek for the periodic wave solutions. Finally, the symbolic computation with the ansatz function scheme is adopted to construct the interaction solutions. The 3-D plots and 2-D contours are figured out to reveal the nonlinear dynamic behaviors of the different solutions. To the best of our knowledge, the results obtained in this work are all new and have not been reported elsewhere yet. The attained solutions can help us understand the nonlinear dynamic behaviors of the new extended (3 + 1)-dimensional BLMPE better. What's more, the proposed methods in this work can be also adopted to study the resonant multiple wave, periodic wave and interaction solutions of the other PDEs arising in physics.

关键词： Linear superposition principle Hirota bilinear method Resonant multiple wave solutions weight algorithm Periodic wave solutions Interaction solutions

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The generalized (3+1)-dimensional B-type Kadomtsev-Petviashvili equation: resonant multiple soliton, N-soliton, soliton molecules and the interaction solutions

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NONLINEAR DYNAMICS 2024年第9期112卷 7309-7324页

作者： Wang, Kang-Jia Henan Polytech Univ Sch Phys & Elect Informat Engn Jiaozuo 454003 Peoples R China

The main orientation of the current research is to look into the generalized (3 + 1)-dimensional B-type Kadomtsev-Petviashvili equation (BKPE) for the water waves. By exerting the Cole-Hopf transform, we extract its Hirota bilinear equation. First, the weight algorithm (WA) together with the linear superposition principle(LSP) is carried out to look for the resonant multiple soliton solutions (RMSSs). Two different types of the RMSSs are obtained by introducing the parameterization of the wave numbers and frequencies. Second, the N-soliton solutions (NSSs) are also explored by using Hirota bilinear equation. On this basis, the resonance conditions of the soliton molecules on the (x, y)-, (x, z)- and (y, z)-planes are extracted and the soliton molecules are found. Finally, the ansatz function scheme, together with the symbolic computation is manipulated to look into the interaction solutions (ISs). Two different interaction solutions of the sin-cosh type and cos-cosh type are developed. A comparison between the RMSSs and the N-soliton solutions are elaborated in detail. Additionally, the dynamics of the solutions are displayed graphically to expound the physical interpretation. The proposed methods in this work can be also employed to inquire into the similar exact solutions of the other PDEs.

关键词： Linear superposition principle Resonant multiple soliton solutions weight algorithm N-soliton solutions Soliton molecules Interaction solutions

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The Study and Implementation of Chinese Words Segmentation and Chinese Language Emotion Analysis System

The Study and Implementation of Chinese Words Segmentation a...

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4th International Conference on Intelligent Human-Machine Systems and Cybernetics (IHMSC)

作者： Zhang, Haomin Shi, Boying Beijing Univ Posts & Telecommun Sch Software Engn Beijing 100088 Peoples R China

ISBN: (纸本)9780769547213

The emotion analysis of Chinese language, basing on the foundation of Chinese words segmentation, aims to study and analyze the emotion that sentences and paragraphs express. Previous algorithm adapted Bayes algorithm and weight algorithm to accomplishing the analysis part, however both of them are not as accurate as the results of some experiments and there is a large discrepancy between the analysis result and the reality on the strength degree of emotion. In this article, a new algorithm is brought forward which is based on the analysis of sentence structure combining with weight algorithm. After the segmentation of words, sentence structure and proposition words will be further analyzed. According to the result, the irrespective emotion of sentences or paragraphs will be largely filtered and finally the strength of words will be calculated and matched according to the weight algorithm. A large number of experiments show that this new algorithm can greatly improve the accuracy of emotion analysis.

关键词： Chinese emotion weight algorithm sentence structure strong degree of word public opinion word match

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An Intrusion Detection System for Cluster Based Wireless Sensor Networks

An Intrusion Detection System for Cluster Based Wireless Sen...

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16th International Symposium on Wireless Personal Multimedia Communications (WPMC)

作者： Deng, Xue Hunan Univ Sch Comp & Commun Engn Changsha 410082 Hunan Peoples R China

Dramatic advances in wireless sensor networks (WSNs) are paving the way for it's widely application. However, security issues have emerged. Compared with the general network, wireless sensor networks has its own characteristics. The most prominent point is the limited resource in WSNs. Such as energy, computation and communication capability. Therefore. wired security mechanism can not applied in WSNs directly. It is necessary to design an security system apply to WSNs. In this paper, we proposed a new intrusion detection system (IDS) which integrates the approach of nodes behavioral strategies and evidence theory. According to the deviation from the normal level of node's behavior, basic input vector of evidence is constructed. Meanwhile, the weight algorithm is applied to represent the importance of each behavior characteristic and revise evidences before synthesis. Finally, linked with evidence theory and judgment rules, we get the detection result of the evaluated node. The simulation results show that our approach is more effective in detecting malicious nodes with higher detection ratio and lower misdetection ratio compared with existing schemes.

关键词： weight algorithm evidence theory behavior characteristic intrusion detection system wireless sensor networks

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