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Mining and Integrating Reliable Decision Rules for Imbalanced Cancer Gene Expression Data Sets

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Tsinghua science and technology 2012年第6期17卷 666-673页

作者： Hualong Yu 1 , Jun Ni 2., Yuanyuan Dan 3., Sen Xu 4 1. School of Computer science and Engineering, Jiangsu university of science and technology, Zhenjiang 2.2.03. china 2. Department of Radiology, Carver College of Medicine, The university of Iowa, Iowa City, IA 52.42. USA 3. School of Biology and Chemical Engineering, Jiangsu university of science and technology, Zhenjiang 2.2.03. china 4. School of information Engineering, Yancheng Institute of technology, Yancheng 2.4051, china School of Computer science and Engineering Jiangsu University of Science and Technology Zhenjiang 212003 China|c|

There have been many skewed cancer gene expression datasets in the post-genomic era. Extraction of differential expression genes or construction of decision rules using these skewed datasets by traditional algorithms will seriously underestimate the performance of the minority class, leading to inaccurate diagnosis in clinical trails. This paper presents a skewed gene selection algorithm that introduces a weighted metric into the gene selection procedure. The extracted genes are paired as decision rules to distinguish both classes, with these decision rules then integrated into an ensemble learning framework by majority voting to recognize test examples; thus avoiding tedious data normalization and classifier construction. The mining and integrating of a few reliable decision rules gave higher or at least comparable classification performance than many traditional class imbalance learning algorithms on four benchmark imbalanced cancer gene expression datasets.

关键词： cancer gene expression data class imbalance paired differential expression genes decision ruleensemble learning majority voting

Some Invariant Properties of Semi-symmetric Metric Recurrent Connections and Curvature Tensor Expressions

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Chinese Quarterly Journal of Mathematics 2004年第4期19卷 355-361页

作者： ZHAO Pei-biao, SONG Hong-zao, YANG Xiao-ping(1. Department of Applied Mathematics, nanjing university of {2. and {3., nanjing 2.0094, china 2. College of Mathematic and information {2., Henan university , Kaifeng 475001, china) Department of Applied Mathematics Nanjing University of Science and Technology Nanjing 210094China College of Mathematic and information science Henan University Kaifeng 475001 China

The projective transformation of the special semi-symmetric metric recurrent connection is studied in this paper. First of all, an invariant under this transformation is granted; Secondly, by inducing of the invariant and making use of the properties that the corresponding covariant derivative keeps being fixed under the distinctness connection, the curvature tensor expression of the Riemannian manifold is posed at the same time.

关键词： projective transformation semi-symmetric metric connection metric recurrent connection invariant curvature tensor expression covariant derivative

A generalized mean shift tracking algorithm

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science china({2. sciences) 2011年第11期54卷 2373-2385页

作者： CHEN JianJun 1,4,ZHANG SuoFei 1,AN GuoCheng 2.& WU ZhenYang 1,3. School of information science and Engineering,Southeast {2.,nanjing 2.0096,china 2.Intelligence Engineering Lab,Institute of Software Chinese Academy of sciences,Beijing 100190,china 3.Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education,Southeast {2.,nanjing 2.0096,china 4 nanjing Research Institute of Electronic technology,nanjing 2.0013.china 1. School of information science and Engineering Southeast University Nanjing 210096 China4. Nanjing Research Institute of Electronic Technology Nanjing 210013 China2. Intelligence Engineering Lab Institute of Software Chinese Academy of Sciences Beijing 100190 China3. Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education Southeast University Nanjing 210096 China

CAMSHIFT algorithm and Comaniciu/Meer algorithm are two fundamental frameworks of mean shift procedure for video target *** paper generalizes the two well-known mean shift tracking algorithms,originally due to Bradski and Comaniciu/Meer.A new general similarity function which defines the distance between the target model and target candidate is employed to calculate the pixel weights and the target *** target size is iteratively estimated and updated based on the zeroth order moment of the pixel *** we prove that both the CAMSHIFT algorithm and the Comaniciu/Meer algorithm can be included in the generalized mean shift tracking *** tracking performances of three mean shift algorithms in the unified framework are shown and compared in the experimental results.

关键词： mean shift CAMSHIFT video target tracking similarity measure

Bell violation for the thermal states of an XXZ spin chain with Dzialoshiski-Moriya interaction

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science china(Physics,Mechanics & Astronomy) 2010年第11期53卷 2074-2079页

作者： MA XiaoSan 1 & WANG AnMin 2.1 School of Electric Engineering and information,Anhui university of {2.,Maanshan 2.3.02.china 2.Department of Modern Physics,university of science and {2. of china,Hefei 2.002.,china 1. School of Electric Engineering and information Anhui University of Technology Maanshan 243002 China2. Department of Modern Physics University of Science and Technology of China Hefei 230026 China

The effect of Dzialoshiski-Moriya (DM) interaction on the violation of Bell inequality for thermal states of interacting qubits via a two-qubit XXZ spin chain is *** results imply that the DM interaction and anisotropy taking a large positive value can enhance the Bell violation and improve the threshold temperatures of *** the comparison between the Bell violation and thermal entanglement,we find that the threshold temperatures of thermal entanglement are higher than those of the Bell *** implies that some states are entangled but the Bell inequality is not violated.

关键词： Bell violation threshold temperatures DM interaction

Asymptotic SEP of MIMO beamforming in two-hop AF relaying systems

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science china({2. sciences) 2012年第2期55卷 377-383页

作者： FU YouHua1,HAN YuJie2.YANG LvXi2.ZHU WeiPing3.& LIU Chen1 1School of Electronic science and Engineering,{3. {2. of Posts and Telecommunications,{3. 2.0003.china 2.chool of information science and Engineering,Southeast {2.,{3. 2.0096,china 3.epartment of Electrical and Computer Engineering,Concordia {2.,Montreal H3. 1M8,Canada 1. School of Electronic science and Engineering Nanjing University of Posts and Telecommunications Nanjing 210003 China2. School of Information Science and Engineering Southeast University Nanjing 210096 China3. Department of Electrical and Computer Engineering Concordia University Montreal H3G 1M8 Canada

This paper derives an asymptotic average symbol error probability(SEP)expression for multiple-input multiple-output(MIMO)two-hop amplify-and-forward(AF)relay systems with optimal *** analysis at high signal-to-noise ratio(SNR)quantifies the diversity order and array gain,which are valid for any antenna numbers of the terminals and arbitrary channel fading *** is also proved that the system performance is dominated by the relatively degraded one of the two-hop *** results based on the simple expressions provide valuable insights into the performance and practical design considerations of MIMO AF networks.

关键词： MIMO relay networks optimal beamforming symbol error probability(SEP) diversity order

Regularity criterion to some liquid crystal models and the Landau-Lifshitz equations in R^3

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science china Mathematics 2008年第10期51卷 1787-1797页

作者： FAN JiShan1 & GUO BoLing2.1 College of information science and {2., nanjing Forestry university, nanjing 2.003., china 2.Institute of Applied Physics and Computational Mathematics, P. O. Box 8009, Beijing 100088, china College of information science and {2. Nanjing Forestry University Nanjing 210037 China Institute of Applied Physics and Computational Mathematics P. O. Box 8009 Beijing 100088 China

We consider the regularity problem under the critical condition to some liquid crystal models and the Landau-Lifshitz equations. The Serrin type reularity criteria are obtained in the terms of the Besov spaces.

关键词： liquid crystal Landau-Lifshitz equations critical condition Besov space

An Exact Virtual Network Embedding Algorithm Based on Integer Linear Programming for Virtual Network Request with Location Constraint

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china Communications 2016年第8期13卷 177-183页

作者： Zeheng Yang Yongan Guo School of Computer science and Engineering University of Electronic Science and Technology of China(UESTC) College of Telecommunications and information Engineering Nanjing University of Posts and Telecommunications

Network virtualization is known as a promising technology to tackle the ossification of current Internet and will play an important role in the future network area. Virtual network embedding(VNE) is a key issue in network virtualization. VNE is NP-hard and former VNE algorithms are mostly heuristic in the *** exact algorithms have been developed in recent years. However, the constraints of exact VNE are only node capacity and link *** on these, this paper presents an exact VNE algorithm, ILP-LC, which is based on Integer Linear Programming(ILP), for embedding virtual network request with location constraints. This novel algorithm is aiming at mapping virtual network request(VNR) successfully as many as possible and consuming less substrate *** topology of each VNR is randomly generated by Waxman model. Simulation results show that the proposed ILP-LC algorithm outperforms the typical heuristic algorithms in terms of the VNR acceptance ratio, at least 15%.

关键词： network virtualization virtual network embedding exact VNE algorithm integer linear Programming location constraint VNR acceptance ratio

A LAW OF ITERATED LOGARITHM FOR THE MLE IN A RANDOM CENSORING MODEL WITH INCOMPLETE information

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Acta Mathematica Scientia 2008年第3期28卷 501-512页

作者：宋凤丽刘禄勤 School of Mathematics and Statistics Wuhan University

In this article, a law of iterated logarithm for the maximum likelihood estimator in a random censoring model with incomplete information under certain regular conditions is obtained.

关键词： Random censoring model maximum likelihood estimator law of iterated logarithm

Threshold quantum secure direct communication without entanglement

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science china(Physics,Mechanics & Astronomy) 2008年第2期51卷 176-183页

作者： YANG YuGuang1,3.& WEN QiaoYan2.1 College of Computer science and technology, Beijing {2. of technology, Beijing 10002., china 2.School of science, Beijing {2. of Posts and Telecommunications, Beijing 100876, china 3.State Key Laboratory of information Security (Graduate School of Chinese Academy of sciences), Beijing 100049, china 1. College of Computer science and technology Beijing University of Technology Beijing 100022 China 3. State Key Laboratory of information Security (Graduate School of Chinese Academy of sciences) Beijing 100049 China 2. School of science Beijing University of Posts and Telecommunications Beijing 100876 China

For the first time, a threshold quantum secure direct communication (TQSDC) scheme is presented. Similar to the classical Shamir's secret sharing scheme, the sender makes n shares, S1, …, Sn of secret key K and each receiver keeps a share secretly. If the sender wants to send a secret message M to the receivers, he en-codes the information of K and M on a single photon sequence and sends it to one of the receivers. According to the secret shares, the t receivers sequentially per-form the corresponding unitary operations on the single photon sequence and ob-tain the secret message M. The shared shares may be reusable if it can be judged that there is no eavesdropper in line. We discuss that our protocol is feasible with current technology.

关键词： quantum secure direct communication threshold secure direct communication quantum secret sharing