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Workshop on Intelligent systems and Applications

作者： Wen-jie Li Qiu-xiang Xia Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Key Laboratory of Computer Vision and System (Tianjin University of Technology)

ISBN: (纸本)9781424458721;9781424458745

To implement the interoperation of different ontologies in medical informatics domain and achieve the goal of the sharing and multiplexing of domain knowledge, the heterogeneous problem between ontologies must be solved. Now the best method of resolving ontology heterogeneous is establishing ontology mapping, that is founding the semantic relations between ontologies and making corresponding mapping rules firstly, and then integrating all independent ontologies into a whole to be operated. In order to produce mapping-pairs and implement ontology mapping and realizing knowledge sharing, a concept similarity algorithm combining semantic similarity with semantic relativity is adopted to estimate the similarity between concepts. It has been proved that the evaluation of concept similarity between ontologies is more accurate by considering both semantic similarity and semantic relativity, and it has laid a good foundation for establishing mapping-pairs and knowledge sharing model based on ontology mapping.

关键词： Ontology mapping Semantic Concept similarity

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A kind of service-aware computing method for Web-based mobile application with uncertainty

A kind of service-aware computing method for Web-based mobil...

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2010 IEEE 5th International Conference on Bio-Inspired computing: Theories and Applications, BIC-TA 2010

作者： Zhang, De-Gan Kang, Xue-Jing Dai, Wen-Bo Chen, Ying Fayek, Moaty Tianjin Key Lab. of Lntelligent Computing and Novel Software Technology Tianjin University of Technology 300191 China Key Laboratory of Computer Vision and System Tianjin University of Technology Ministry of Education 300191 Tiajin China Department of Computer Science California State University Chico CA 95929 United States

ISBN: (纸本)9781424464388

As we know, service-aware computing is an important part of pervasive computing for Web-based mobile application with uncertainty. We modified the fusion method of evidence information after considering context's reliability, time-efficiency, and relativity, which has improved the classical fusion rule of D-S (Dempster-Shafer) Evidence Theory when being used in the pervasive computing paradigm. We call it EDS. After extending the process, we overcome the drawbacks of classical D-S Evidence Theory. All these suggested technologies have been successfully used in our service-aware computing projects. The efficiency of our researches has been shown by our many application practices. © 2010 IEEE.

关键词： Ubiquitous computing

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Identification of image-spam based on SIFT image matching algorithm

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Journal of Information and Computational Science 2010年第14期7卷 3153-3160页

作者： Wang, Chundong Yang, Hua Chen, Yinghui Sun, Li Zhou, Yan Wang, Huaibin 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

In the paper, a method is proposed for efficient identification of Image-spam using the simplified Scale Invariant Feature Transform (SIFT) algorithm. It firstly strengthens the feature of image-spam email picture by Symmetric Neighborhood Filters(SNF). In addition, we improved the SIFT algorithm by reducing the dimensions of feature vectors from 128 to 40, which can obviously save the time cost of identifying a regular E-mail or a spam image-based E-mail. And the method is demonstrated successfully by simulation experiment based MATLAB7.0 for its high accuracy and rapid speed in detection. Copyright © 2010 Binary Information Press.

关键词： Electronic mail

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Biped robot walking using central pattern generator and genetic algorithm

Biped robot walking using central pattern generator and gene...

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IASTED International Conference on Robotics, Robo 2010

作者： Liu, Chengju Chen, Qijun Wang, Danwei School of Electronics and Information Engineering Tongji University Shanghai 201804 China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 201804 China School of Electrical and Electronic Engineering Nanyang Technological University Singapore Singapore

ISBN: (纸本)9780889868595

Central pattern generator (CPG) plays an important role in rhythmic activities of animals and this mechanism is an important inspiration source for the motion control of legged robots. In this paper, by using CPGs and function mapping mechanism, a high-efficiency distributed CPG control network is constructed to realize the locomotion control of biped NAO robot. To realize stable and coordinated locomotion, the parameters of the CPG network are evolved by multi-object genetic algorithm (MOGA). Simulations with Webots validate the feasibility and efficiency of the presented CPG-based control method.

关键词： Genetic algorithms

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A new approach for 3D motion estimation of a planar object

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Journal of Computational Information systems 2010年第5期6卷 1517-1524页

作者： Wang, Chundong Ning, Shukun Wen, Xianbin Zhang, Hua 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

This paper proposes a new nonlinear approach for 3D motion estimation of a planar object. Based on the premise that the object is a plane or a kind of similar plane, we use LSM (Least Squares Method) to estimate the 3D motion parameters. Because the derived equations could not be solved deterministically, the steepest descent method and the annealing algorithm are used to find the solutions. Comparing to the 8-point-algorithm, one of the popular existing methods, our method needs much less corresponding feature points (at least 4 pairs are enough);comparing to the linear estimation methods, such as the homography matrix decomposition, our method needs much less information (only the coordinates of the corresponding feature points on 2 pieces of images) and the estimation result has no ambiguity problem. In the experiment, the result shows a high and stable accuracy. Copyright © 2010 Binary Information Press May, 2010.

关键词： Steepest descent method

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DMA cache: Using on-chip storage to architecturally separate I/O data from CPU data for improving I/O performance

DMA cache: Using on-chip storage to architecturally separate...

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IEEE Symposium on High-Performance Computer Architecture

作者： Dan Tang Yungang Bao Weiwu Hu Mingyu Chen Key Laboratory of Computer System and Architecture Institute of Computing Technology Chinese Academy and Sciences China

ISBN: (纸本)9781424456581

As technology advances both in increasing bandwidth and in reducing latency for I/O buses and devices, moving I/O data in/out memory has become critical. In this paper, we have observed the different characteristics of I/O and CPU memory reference behavior, and found the potential benefits of separating I/O data from CPU data. We propose a DMA cache technique to store I/O data in dedicated on-chip storage and present two DMA cache designs. The first design, Decoupled DMA Cache (DDC), adopts additional on-chip storage as the DMA cache to buffer I/O data. The second design, Partition-Based DMA Cache (PBDC), does not require additional on-chip storage, but can dynamically use some ways of the processor's last level cache (LLC) as the DMA cache. We have implemented and evaluated the two DMA cache designs by using an FPGA-based emulation platform and the memory reference traces of real-world applications. Experimental results show that, compared with the existing snooping-cache scheme, DDC can reduce memory access latency (in bus cycles) by 34.8% on average (up to 58.4%), while PBDC can achieve about 80% of DDC's performance improvements despite no additional on-chip storage.

关键词： Cache storage Delay Bandwidth Buffer storage system-on-a-chip Laboratories Computer architecture Emulation Throughput Hard disks

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Application of a novel 6-DOF parallel robot with redundant actuation for earthquake simulation

Application of a novel 6-DOF parallel robot with redundant a...

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2010 IEEE International Conference on Robotics and Biomimetics, ROBIO 2010

作者： Zhang, Jianzheng Yu, Hongnian Gao, Feng Zhao, Xianchao Ma, Chunxiang Huang, Xu State Key Laboratory of Mechanical System and Vibration Shanghai Jiao Tong University Shanghai 200240 China Faculty of Computing Engineering and Technology Staffordshire University Stafford ST18 0DG United Kingdom

ISBN: (纸本)9781424493173

In this paper a novel orthogonal 6-DOF (Degree Of Freedom) parallel robot with redundant actuation is studied as an earthquake motion simulator. Taking the practical simulation of earthquake waves into consideration, we firstly analyze the general characteristics of natural earthquakes. Complexity and variety of seismic waves, 3-dimention and multi-DOF movement and strong devastating force are regarded as their three obvious features in this article. Based on the characteristics of this novel orthogonal 6-DOF parallel mechanism with redundant actuation and the features of earthquakes, the feasibility of using this parallel robot as an earthquake motion simulator is analyzed. In order to simulate earthquake motion by using the parallel robot, its unambiguous kinematics and dynamics models are derived in details. The control system of the proposed earthquake simulator is developed based on the PXIbus development platform. A typical three-direction earthquake motion, the El Centro earthquake, is simulated on the end-effector of the parallel robot using its mathematical models and control system. Three main motion parameters of simulated seismic waves, displacements, velocities and accelerations are measured respectively. The experimental results show that this equipment is appropriate for using as an earthquake simulator. © 2010 IEEE.

关键词： Seismic waves

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Network-worm-control technology based on the front buffer two-stage leaky bucket algorithm

Network-worm-control technology based on the front buffer tw...

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International Conference on Intelligent Control and Information Processing (ICICIP)

作者： Chundong Wang Qing Chang Quancai Deng Huaibin Wang Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology and Key Laboratory of Computer Vision and System Ministry of Education TianJin University of Technology Tianjin China

A new network-worm-control technology is proposed after having fully analyzed the differences between worm and normal connection requests. Considering the worm characteristic of attacking unique port and dispersing IP addresses, the method uses multiple data sets according to the different ports to avoid the influence among the ports. Aiming at the normal connection characteristic of ephemeral bursting out, the method takes advantage of two-stage leaky bucket to control the output of delay queues. The method can not only shorten the period of staying in the delay queue of normal requests, but also prevent the worms. The analysis shows that this method plays a significant role before the outburst of the worms.

关键词： Grippers Delay IP networks Laboratories Internet Software Artificial intelligence

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A new watermarking approach based on BP network in wavelet domain

A new watermarking approach based on BP network in wavelet d...

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Congress on Image and Signal Processing, CISP

作者： Fenglian Liu Lili Liu Key Laboratory of Computer Vision and System Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Ministry of Education Tianjin University of Technology Tianjin China

This paper proposes a novel digital watermarking technique based on BP neural networks in wavelet domain. Firstly, the original image is decomposed by DTCWT, and then the watermark bits are added to the selected coefficients blocks. Because of the learning and adaptive capabilities of neural networks, the trained neural networks can recover the watermark from the watermarked images. Experimental results show that the proposed scheme has good performance against several attacks.

关键词： Watermarking Artificial neural networks Robustness Transforms Data mining Neurons AWGN

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Improved asymptotic multicast throughput for random extended networks

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Computer Communications 2010年第18期33卷 2195-2202页

作者： Cheng Wang Changjun Jiang Xiang-Yang Li Jiujun Cheng Department of Computer Science and Technology Tongji University Shanghai China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications China Key Laboratory of Embedded System and Service Computing Ministry of Education Shanghai China Department of Computer Science Illinois Institute of Technology Chicago IL 60616 USA

We study the asymptotic throughput for random extended networks , where n ad hoc nodes are randomly deployed in a square region R ( n ) = 0 , n 2 . We directly consider the multicast throughput to unify the unicast and broadcast throughput, and design a new multicast scheme under the generalized physical model based on the so-called secondary highways system . Taking account of all possible cases of n s = ω (1) and 1 ⩽ n d ⩽ n − 1, we derive the achievable multicast throughput, where n s and n d denote the number of sessions and the number of destinations of each session. We prove that for some cases in terms of n s and n d , our scheme achieves better throughput than the existing schemes.

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