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14th International Conference on Natural Computation, Fuzzy systems and Knowledge Discovery, ICNC-FSKD 2018

作者： Dai, Min Meng, Danyang Jia, Feng Ma, Miaoling Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin China

ISBN: (纸本)9781538680971

An electrocardiogram (ECG)identification method is proposed based on PRT triangle gravity tunnel of continuous electrocardiogram. The PRT center of gravity is defined by the P, R, T fiducial points in ECG signal, and the gravity tunnel of continuous PRT points is described as a matrix. The European distance is used to determine the similarity between two matrices. The performance of the proposed method is tested on MIT-BIH Database and the ECG data collected in practical environment from 25 healthy college students. Several group experiments were carried out and the average recognition accuracy is 99.87%. Comparing with the traditional correlation coefficient method, experimental results show that the average recognition accuracy is increased 1.66% when using the proposed method. © 2018 IEEE.

关键词： Electrocardiograms

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Structural controllability of optimized networks with onion-like topologies

Structural controllability of optimized networks with onion-...

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Chinese Intelligent systems Conference, CISC 2018

作者： Li, Manli Sun, Shiwen Wu, Yafang Xia, Chengyi Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin300384 China Key Laboratory of Computer Vision and System Tianjin University of Technology Tianjin300384 China

ISBN: (纸本)9789811322877

Recently, an optimization method has been proposed to increase the ability of complex networks to resist intentional attacks on hub nodes. The finally optimized networks exhibit a novel type of "onion-like" structure. At the same time, structural controllability of complex networks also has been a hot research topic in recent years. Thus, structural controllability of "onion-like" networks deserves sufficient discussion. In this study, we explored the relationship between the attack robustness and structural controllability of scale-free networks before and after optimization. After implementing large quantity of numerical simulations, it has been found that the optimized scale-free networks have both increased robustness and enhanced structural controllability. Current research results can shed some light on the deep understanding of structural complexity and dynamical properties of real-world networked systems. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Topology

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Security analysis and improvement for kerberos based on dynamic password and diffie-hellman algorithm

Security analysis and improvement for kerberos based on dyna...

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4th International Conference on Emerging Intelligent Data and Web Technologies, EIDWT 2013

作者： Wang, Chundong Feng, Chaoran Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin China

ISBN: (纸本)9780769550442

This paper analyses the process of Kerberos authentication protocol, and finds the existing security problems of the protocol referring to some Kerberos improvement projects proposed in some papers at home and abroad, and puts forward the thoughts and methods using dynamic password to improve the encryption security during the process of interaction between the client and Kerberos key distribution center, and makes passwords securely exchanged by using Diffile-Hellman key algorithm. © 2013 IEEE.

关键词： Cryptography

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Real-time detection and recognition of landmarks for mobile robot in indoor scenes

International Journal of Multimedia and Ubiquitous Engineeri...

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International Journal of Multimedia and Ubiquitous Engineering 2013年第4期8卷 329-341页

作者： Xue, Yanbing Zhang, Hua Ju, Yucui Wang, Jin Key Laboratory of Computer Vision and System Tianjin University of Technology Tianjin 300191 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing 210044 China

This paper proposes a robust real-time artificial landmarks detection and recognition system for indoor mobile robot. Landmarks detection and recognition for indoor robots faces two major difficulties, one is the illumination changes and the other is processing speed. In this paper, first, histograms of oriented gradient (HOG) features are extracted to resolve the problem of illumination changes. Second, AdaBoost based algorithm is used in detection phase to increase the processing speed. Finally, RBF-SVM classifier is used for recognition. Experimental results show a high detection and recognition accuracy and the processing speed is about 10 frames per second.

关键词： Adaptive boosting

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Rule-chain incremental mining algorithm based on directed graph

Rule-chain incremental mining algorithm based on directed gr...

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6th International Conference on Fuzzy systems and Knowledge Discovery, FSKD 2009

作者： Ning, Hongyun Zhang, Zhiying Zhang, Degan Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin China Key Laboratory of Computer Vision and System Tianjin University of Technology Ministry of Education Tianjin China

ISBN: (纸本)9780769537351

Aiming to discover the rule-chains directly, a novel graph-based online incremental mining algorithm (RIOMining) is proposed. Firstly, an interrelated bitmap based on a directed graph (PAGraph) is designed to compress the rule-chain information for storage. The compressed storage of the directed-graph effectively avoids repetitious database scanning and makes meaningful rules found more conveniently. Secondly, four theorems about discovery and pruning of frequent path in the graph are proved, so as to the rule-chains could be iteratively generated by searching incremental paths, while the theorems narrow the search scope and promote the performance by properly pruning and extending paths. It effectively reduces the redundancy calculation. Comparing it with other two fast mining algorithms, DLG and FP-growth, experimental result shows that it can mine rule-chains of high quality, especially, it is of real-time accuracy, and thereby it can be widely applied to dynamic network environment. © 2009 IEEE.

关键词： Directed graphs

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Design and implementation of authentication and authorization flow in ESCP system

Design and implementation of authentication and authorizatio...

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4th International Conference on Emerging Intelligent Data and Web Technologies, EIDWT 2013

作者： Wang, Chundong Bo, Guangming Zhang, Yaohui Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin China Key Laboratory of Computer Vision and System Ministry of Education Tianjin University of Technology Tianjin China

ISBN: (纸本)9780769550442

ESCP is short for Enterprise Social collaboration Platform. The ESCP system, which is also known as enterprise social networking, is a platform which translates the basic elements of the social networking and twitter into tools of productivity. For system security, authentication and authorization management should be on its priorities. It verifies user's identity effectively and allows authorized users to access protected resources stored in the service provider, and thus plays a role in access control. The basic authentication and the digest authentication are described, specifically this paper emphasizes design and implementation of the Form-based Authentication and the improved OAuth Authentication. Aiming at the problem of the granularity of authorization for the OAuth authentication method, improvement measures are proposed and implemented. © 2013 IEEE.

关键词： Authentication

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Damping based multi-path traffic allocation algorithm for wireless networks

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Journal of Computational Information systems 2012年第10期8卷 4169-4175页

作者： Lu, Xu Yu, Ruiguo Dong, Wenyong Lei, Ming Hao, Lianxiu School of Computer Science and Technology Tianjin University Tianjin 300072 China Computer School Wuhan University Wuhan 430079 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin 300191 China School of Electronic Information Engineering Tianjin University Tianjin 300072 China

In physics, damping is any effect that tends to reduce the amplitude of oscillations in an oscillatory system. Inspired by this, we present a new traffic allocation algorithm for Wireless Networks in order to limit the packet delay variance. We refer to our algorithm as the damping based traffic allocation algorithm (DBTA). DBTA computes the queuing delay and queuing delay variance, configures system parameters, and finally reduces the amplitude of delay variations. We realize DBTA based on Dynamic Source Routing (DSR) protocol. Performance comparison of DBTA with DSR using Network Simulator (NS-2) simulation shows that DBTA can achieve a remarkable improvement in decreasing the packet delay variance. © 2011 by Binary Information Press.

关键词： Damping

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Vibration model based multi-path traffic allocation algorithm for wireless mesh networks

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Journal of Information and Computational Science 2013年第5期10卷 1253-1260页

作者： Yuan, Zhenxia Yu, Ruiguo Zhao, Mankun Du, Xiuping Lei, Ming Dong, Wenyong School of Computer Science and Technology Tianjin University Tianjin 300072 China School of International Education Tianjin University Tianjin 300072 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin 300191 China Computer School Wuhan University Wuhan 430079 China

Mesh Networks (WMNs) is a promising network access technology. As WMNs' applications become more and more popular, the number of users grows quickly and the quality of service needs to be improved. When we try to analyze the load on different paths using the simplest multi-path routing algorithms we find that the load changes just like Simple Harmonic Motion, which inspires us to use physic model to analyze the traffic allocation problems. And then we design a new traffic allocation algorithm and the experiment shows that the algorithm can reduce the path delay variance. © 2013 Binary Information Press.

关键词： Quality of service

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Research on context-aware computing with uncertainty for proactive service

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International Journal of Modelling, Identification and Control 2009年第3期8卷 248-255页

作者： Zhang, De-Gan Tianjin Key Lab of Intelligent Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Tianjin University of Technology Ministry of Education Tianjin 300191 China Key Lab of Industrial Controlling Technology Zhejiang University Hangzhou 310027 China

It is known to all that context-aware computing with uncertainty is an important part of pervasive computing for proactive service. Because multi-source evidence context-aware information with uncertainty is dynamic and changing randomly, in order to ensure the QoS of different application fields based on pervasive computing, we modified the fusion method of evidence information after considering context's reliability, time efficiency and relativity, which has improved the classic fusion rule of D-S evidence theory when used in the pervasive computing paradigm. After extending the process, we overcome the shortcoming of classic D-S evidence theory. All these suggested technologies have been successfully used in our project. The efficiency of our researches has been tested by application practice and validation of the demo. Copyright © 2009, Inderscience Publishers.

关键词： Ubiquitous computing

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Classifying Personal Photo Collections: An Event-Based Approach

Classifying Personal Photo Collections: An Event-Based Appro...

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Asia Pacific Web (APWeb) and Web-Age Information Management (WAIM) Joint Conference on Web and Big Data, APWeb-WAIM 2018

作者： Geng, Ming Li, Yukun Liu, Fenglian Tianjin University of Technology Tianjin300384 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin China Key Laboratory of Computer Vision and System Ministry of Education Tianjin Tianjin China

ISBN: (纸本)9783030012977

Due to the increasing number of photos taken by mobile phone, how to improve the efficiency of re-finding personal photos becomes an important research issue. Based on the survey of the current methods to re-find expected photos in mobile phones, this paper proposes a photo classification strategy based on specific events. We firstly discover the relationship of shooting time and shooting location to specific events, and propose a method to classify personal photos based on them. Because there is no existing data set for experiment, we collect several representative photo collections of different people as experimental data sets, and the experiments show the efficiency of our method. We implement an album system based on our method and compare it with other existing classification ones, and the results show that our strategy can improve the efficiency of re-finding photos. © 2018, Springer Nature Switzerland AG.

关键词： Cellular telephones

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