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International Conference on Pattern Recognition

作者： Tao, Xunqiang Yang, Xin Cao, Kai Wang, Ruifang Li, Peng Tian, Jie Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769541099

Accurate estimation of fingerprint orientation field is an essential module in fingerprint recognition. This paper proposes a novel technique for improving fingerprint orientation field estimation by fingerprint orientation model based on weighted 2D fourier expansion(W-FOMFE). The motivation for the proposed method can be found by: 1)the original FOMFE is sensitive to abrupt changes in orientation field;2) blocks of different quality should have different impacts on FOMFE. Thus, we take into account the information of the Harris-corner strength (HCS) for orientation field estimation. In our method, we first calculate the fingerprint' HCS;then use the HCS to remove abrupt changes in orientation field;finally, incorporate the normalized HCS as weighted value into original FOMFE. We test our method on FVC2004DB1. Experimental results show that our method (W-FOMFE) has better orientation field estimation than FOMFE. © 2010 IEEE.

关键词： Fourier transforms

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Differentiation of syndromes with SVM

Differentiation of syndromes with SVM

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3rd International Symposium on Neural Networks, ISNN 2006 - Advances in Neural Networks

作者： Sun, Zhanquan Xi, Guangcheng Yi, Jianqiang Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Academy of Sciences 100080 Beijing China

ISBN: (纸本)3540344829

Differentiation of syndromes is the kernel theory of Traditional Chinese Medicine (TCM). How to diagnose syndromes correctly with scientific means according to symptoms is the first problem in TCM. Several modern approaches have been applied, but no satisfied results have been obtained because of the complexity of diagnosis procedure. Support Vector Machine (SVM) is a new classification technique and has drawn much attention on this topic in recent years. In this paper, we combine non-linear Principle Component Analysis (PCA) neural network with multi-class SVM to realize differentiation of syndromes. Non-linear PCA is used to preprocess clinical data to save computational cost and reduce noise. The multi-class SVM takes the non-linear principle components as its inputs and determines a corresponding syndrome. Analyzing of a TCM example shows its effectiveness. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Drug products

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Improving personalized services in mobile commerce by a novel multicriteria rating approach 08

Improving personalized services in mobile commerce by a nove...

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17th International Conference on World Wide Web 2008, WWW'08

作者： Li, Qiudan Wang, Chunheng Geng, Guanggang Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781605580852

With the rapid growth of wireless technologies and mobile devices, there is a great demand for personalized services in m-commerce. Collaborative filtering (CF) is one of successful techniques to produce personalized recommendations for users. This paper proposes a novel approach to improve CF algorithms, where the contextual information of a user and the multicriteria ratings of an item are considered besides the typical information on users and items. The multilinear singular value decomposition (MSVD) technique is utilized to explore both explicit relations and implicit relations among user, item and criterion. We implement the approach in an existing m-commerce platform, and encouraging experimental results demonstrate its effectiveness.

关键词： Collaborative filtering

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Video detection and analysis system of public transport for the 2010 Asian games

Video detection and analysis system of public transport for ...

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IEEE International Conference on Vehicular Electronics and Safety

作者： Ye, Peijun Gao, Jun Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781457705762

Traffic Video Detection and Analysis provide a new objective and reliable reference for traffic real-time monitoring, dynamic dispatching, route guidance and traffic controlling strategy development. This filed has become a hot spot of Intelligent Transportation Research in recent years for its low cost and high accuracy. This paper introduces Video Detection and Analysis System of the public transport for Guangzhou Asian Games, 2010. Consisted of vehicular and pedestrian subsystem, this system is highly accurate and does well in real-time detection in some traffic parameters such as vehicular and pedestrian flow, speed, density. We believe that its prospect is bright. © 2011 IEEE.

关键词： Transportation routes

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Globally-preserving based locally linear embedding

Globally-preserving based locally linear embedding

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International Conference on Pattern Recognition

作者： Hui, Kanghua Wang, Chunheng Xiao, Baihua Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9780769541099

The locally linear embedding (LLE) algorithm is considered as a powerful method for the problem of nonlinear dimensionality reduction. In this paper, a new method called globally-preserving based LLE (GPLLE) is proposed. It not only preserves the local neighborhood, but also keeps those distant samples still far away, which solves the problem that LLE may encounter, i.e. LLE only makes local neighborhood preserving, but can't prevent the distant samples from nearing. Moreover, GPLLE can estimate the intrinsic dimensionality d of the manifold structure. The experiment results show that GPLLE always achieves better classification performances than LLE based on the estimated d. © 2010 IEEE.

关键词： dimensionality estimation dimensionality reduction embedded systems globally preserving globally-preserving based LLE algorithm image sampling local neighborhood locally linear locally linear embedding manifold learning nonlinear dimensionality reduction pattern classification

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An on-line robot trajectory planning algorithm in joint space with continuous accelerations

An on-line robot trajectory planning algorithm in joint spac...

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International Conference on Advanced Technology of Design and Manufacture, ATDM 2010

作者： Jing, Fengshui Qi, Yuhan Qiang, Yanhui Yang, Chao Key Laboratory of Complex Systems Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781849192385

This paper presents a novel trajectory planning method in robot joint space, which poses several good properties for the robot motion control. Firstly, it provides the continuity of accelerations on all segments of the planned trajectory by combining quintic and quartic polynomials. Secondly, it can deal with path points with or without velocities and accelerations, which may be very useful, especially when robot is at singular configurations. Finally, it can be applied to both on-line tasks and off-line tasks by looking ahead one or two path points. Simulation results of this method and other trajectory planning methods are also presented for the purpose of comparison.

关键词： Trajectories

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Tracking ground targets using an autonomous helicopter with a vision system

Tracking ground targets using an autonomous helicopter with ...

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2010 3rd International Congress on Image and Signal Processing, CISP 2010

作者： Deng, Haibo Zhao, Xiaoguang Hou, Zengguang Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781424465149

An autonomous helicopter with a vision system onboard to track ground targets can accomplish very important tasks like inspection and surveillance. The autonomous helicopter target tracking system is a interdisciplinary complex system. A typical autonomous helicopter target tracking system using vision sensors usually includes five major component: a navigation system, a flight controller, a active vision system, a target state estimator and a helicopter guidance law. In this paper, we focus on target state estimator and helicopter guidance law. It is assumed that the target moves on a flat ground, so the relative position between the target and the helicopter can be measured by a monocular vision system. Kalman filter is used to estimate the state of the target based on the vision measurements. A new guidance law inspired by velocity pursuit guidance and car-following control is proposed to guide the helicopter to follow the moving target. The tracking system is tested in a virtual reality environment and the results shows that the performance of the system is satisfied. ©2010 IEEE.

关键词： Helicopters

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An epidemiological analysis of the Beijing 2008 Hand-Foot-Mouth epidemic

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Chinese science Bulletin 2010年第12期55卷 1142-1149页

作者： CAO ZhiDong ZENG DaJun WANG QuanYi ZHENG XiaoLong WANG FeiYue Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing 100190 China Beijing Center for Disease Control and Prevention Beijing 100013 China

This paper presents an empirical analysis of the epidemiological data concerning the 18445 HFMD-infected cases in Beijing in *** main findings are as follows.(i) Seasonal variations in incidence were observed,with a peak observed during the summer season,especially in *** patients outnumber female patients by 1.57:1.(ii) Most cases occurred in children 4 years old or *** Weibull distribution and Gamma distribution as to model fitness when analyzing patient ages,log-normal distribution indicates that the estimated mean age is 3.4 years.(iii) The age distribution seems to indicate cyclic peaks with roughly one-year intervals.(iv) Correlation analyses (ρ=0.9864) show that time of birth in different months has an impact on the chance of being infected by *** month seems to present a high risk factor on infants and young children.(v) The morbidity rate is 132.7/100000 during the HFMD epidemic in Beijing in *** morbidity map shows that the risks of HFMD infection in areas close to the city center and suburbans are much lower than those in the urban-rural transition *** risks inferred from the morbidity map demonstrate a clear circular pattern.(vi) The prevention and control measures taken by the public health departments seem to be effective during the summer season,resulting in the early ending of the epidemic (one month earlier than the natural season) and reduced outbreak size.

关键词：流行病学分析疫情北京 Weibull分布模型作者对数正态分布季节变化平均年龄

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Second Attribute Algorithm Based on Tree Expression

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Journal of Computer science & Technology 2006年第3期21卷 383-392页

作者：韩素青王珏 Department of Mathematics Taiyuan Normal University Taiyuan 030031 P.R. China Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing 100080 P.R. China

One view of finding a personalized solution of reduct in an information system is grounded on the viewpoint that attribute order can serve as a kind of semantic representation of user requirements. Thus the problem of finding personalized solutions can be transformed into computing the reduct on an attribute order. The second attribute theorem describes the relationship between the set of attribute orders and the set of reducts, and can be used to transform the problem of searching solutions to meet user requirements into the problem of modifying reduct based on a given attribute order. An algorithm is implied based on the second attribute theorem, with computation on the discernibility matrix. Its time complexity is O（n^2 × m）（n is the number of the objects and m the number of the attributes of an information system）. This paper presents another effective second attribute algorithm for facilitating the use of the second attribute theorem, with computation on the tree expression of an information system. The time complexity of the new algorithm is linear in n. This algorithm is proved to be equivalent to the algorithm on the discernibility matrix.

关键词： attribute order second attribute discernibility matrix tree expression

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Recent progress in fingerprint recognition

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Progress in Natural science:Materials International 2006年第3期16卷 231-240页

作者： TIAN Jie, CHEN Xinjian, ZHANG Yangyang, YANG Xin, HE Yuliang, LI Liang, XIE Weihua and ZHENG Zhipeng (Center for Biometrics and Security Research, key laboratory of complex systems and intelligence science, institute of automation, Chinese Academy of sciences, Beijing 100080, China Graduate School of the Chinese Academy of sciences, Beijing 100080, China) [a]Center for Biometrics and Security Research Key Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China [b]Graduate School of the Chinese Academy of Sciences Beijing China

Fingerprint recognition has been increasingly used to realize personal identification in civilian' s daily life, such as ID card, fingerprints hard disk and so on. Great improvement has been achieved in the on-line fingerprint sensing technology and automatic fingerprint recognition algorithms. Various fingerprint recognition techniques, including fingerprint acquisition, classification, enhancement and matching, are highly improved. This paper overviews recent advances in fingerprint recognition and summarizes the algorithm proposed for every step with special focuses on the enhancement of low-quality fingerprints and the matching of the distorted fingerprint images. Both issues are believed to be significant and challenging tasks. In addition, we also discuss the common evaluation for the fingerprint recognition algorithm of the Fingerprint Verification Competition 2004 (FVC2004) and the Fingerprint Vendor Technology Evaluation 2003 (FpVTE2003), based on which we could measure the performance of the recognition algorithm objectively and uniformly.

关键词： biometrics fingerprint enhancement matching minutia image registration similarity measures.

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