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Text Information Retrieval Based on Concept Semantic Similarity

Text Information Retrieval Based on Concept Semantic Similar...

引用

Fifth International Conference on Semantics,Knowledge and Grid(第五届语义、知识与网格国际会议 SKG 2009)

作者： Gang Lv Cheng Zheng Li Zhang Key Laboratory of Network and Intelligent Information Processing Hefei University Hefei China Educational Department Key Laboratory of Intelligent Computing & Signal Processing Anhui University Hefei China

In this paper, an improved method of calculating ontology semantic similarity is proposed to enhance the information retrieval recall and precision. To filter out the document which have smaller related degree with original query, the scores of search results document is re-calculated by use of ontology semantic similarity. A new definition of the iterative query expansion parameters is put forward which can reduce the number of expansion and further improve the efficiency of the query. The use of open source tools for text semantic retrieval test, i.e., Jena and Lucene, has verified the feasibility and effectiveness of the proposed method.

关键词： Information Retrieval Ontology Semantic Similarity Query Expansion Document Scores

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Identifying protein-protein interaction sites using adapted Bayesian classifier

Identifying protein-protein interaction sites using adapted ...

引用

2009 Second ISECS International Colloquium on computing, Communication, Control, and Management, CCCM 2009

作者： Chishe, Wang Jie, Song Fangping, Li Junsong, Lv School of Information Technology Jinling Institute of Technology Nanjing 211169 China Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei 230039 China Center of Network University of Science and Technology of China Hefei 230029 China Anhui Statistics Bureau Hefei 230001 China

ISBN: (纸本)9781424442461

Identifying protein-protein interaction sites have important connotations ranging from rational drug design to analysis metabolic and signal transduction networks. In this paper, we presented an adapted Bayesian classifier based on tree augmented naïve Bayesian classifier to predict interface residues of protein-protein interaction sites. This classifier used fixed structure which could denote the correlation of sequence neighborhood and the character of protein's features. The conditional probability tables of the classifier were learned from the training dataset. By testing our approach on 81 hetero-complex chains, experimental results demonstrate the performance of our approach is indeed superior to current existing methods. The success of the predictions is validated by examining the predictions in the context of the three-dimensional structures of protein complexes. ©2009 IEEE.

关键词： Forecasting

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WIRELESS INTRUSION DETECTION FOR DEFENDING AGAINST TCP SYN FLOODING ATTACK AND MAN-IN-THE-MIDDLE ATTACK

WIRELESS INTRUSION DETECTION FOR DEFENDING AGAINST TCP SYN F...

引用

2009 International Conference on Machine Learning and Cybernetics(2009机器学习与控制论国际会议)

作者： HUAN-RONG TANG ROU-LING SUN WEI-QIANG KONG Key Laboratory of Intelligent Computing & Information Processing (Xiangtan University) Ministry of Education China 411105

With the popularity of wireless communication application in a wide range of industry and daily life, it is more and more important to solve security problems of wireless local area network (WLAN). In this paper, we propose a new architecture of Wireless Intrusion Detection System (WIDS) for IEEE 802.11 wireless infrastructure networks. The WIDS detect man-in-the-middle-attacks by analyzing the channel gap. Moreover, it can defense the SYN flood attack. The results indicate that the WIDS proposed in this paper is superior at precisely detecting a man-in-thc-middle attack and successfully protecting AP from SYN Flood attack than other existing approaches.

关键词： WLAN WIDS Infrastructure Man-in-the-middle-attack SYN Flood Attack

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Rate-Embedded Doubly Directional Differential Space-Time-Frequency Coding Schemes

Rate-Embedded Doubly Directional Differential Space-Time-Fre...

引用

International Conference on Wireless Communications, Networking and Mobile computing (WiCom)

作者： Hongwei Zhang Xiaohui Li Lu Lu The Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education Anhui University Hefei China Hefei Information Resource Management Center Hefei China

Due to a great many redundancy symbols, most of the existing differential space-time-frequency (DSTF) coding schemes suffer very low transmission rates. To overcome the disadvantage and obviously enhance the total transmission rate in a differential multiple-input-multiple-output (MIMO) orthogonal-frequency-division-multiplexing (OFDM) system, a rate embedded doubly directional DSTF coding scheme is proposed for doubly selective fading channels in this paper. High rate differentially coded matrices are embedded into proper time blocks and sub-carriers. In the frequency domain, both high rate non-unitary message matrices and low rate unitary message matrices are differentially transmitted alternately. In the time domain, all message matrices have full rates. Simulation results verify that, compared with those conventional DSTF coding schemes, the proposed scheme can achieve better error performances with higher transmission rates.

关键词： Receiving antennas MIMO Frequency domain analysis Transmitting antennas Fading Redundancy OFDM Slot antennas Laboratories signal processing

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Traceback-Based Bloomfilter IPS in Defending SYN Flooding Attack

Traceback-Based Bloomfilter IPS in Defending SYN Flooding At...

引用

International Conference on Wireless Communications, Networking and Mobile computing (WiCom)

作者： Huan-rong Tang Chao Xu Xin-gao Luo Jian-quan OuYang Key Laboratory of Intelligent Computing & Information Processing Ministry of Education Xiangtan University Xiangtan Hunan China

Recently, the key of network security is turning from passive detection to active defense. However, most works focused on how fast it can detect the DDoS attack and start defence, and existing methods for differentiating DDoS attack packets, especially SYN flooding attacks, are too time-expensive. When SYN flooding started, victim servers have to call for a lot of memory, usually more than 500 MB, to store the attack packets. To make the differentiating scheme more robust, we record the TCP session statistics (IP-TTL) of SYN packets in a traceback-based bloom filter (TBF), and as the attacks start, we match the SYN packets and IP-TTL statistics to differentiate the attacks packets. In addition, we introduce the trace-back strategy to filter the frequently attacked TBF's IP. In comparison with current methods, the proposed approach can both hold back large-scale fake IP and defend IP spoofing. Experiments verify that once applied the proposed method in Snort_inline, the hold back precision is 98.65% and the semi-join queue is almost empty, otherwise, the precision is near to zero and the semi-join queue is full.

关键词： Floods Computer crime TCPIP Protection Information security Statistics Filters Robustness Counting circuits National security

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A 5-Parameter Bundle Adjustment Method for Image Mosaic

A 5-Parameter Bundle Adjustment Method for Image Mosaic

引用

International Conference on Computer and Information Science (ACIS)

作者： Xianyong Fang Bin Luo Haifeng Zhao Yiwen Zhang Key Laboratory of Intelligent Computing and Signal Processing of MOE School of Computer Science and Technology Anhui University China

A 5-parameter bundle adjustment method is proposed in this paper for global mosaic of an image sequence. By decomposing the rotation matrix into a 3-parameter rotation axis and a rotation angle, to each image, there are 5 parameters that need estimate for rotation axis, rotation angle and focal length. The proposed method minimizes the distance between feature matches in 3D space so that these 5 parameters are refined gradually for final stitching of all images together. Experimental results suggest that this method is an useful extension to existing research with the advantages of real 3D camera motion, accurate 5-parameter rotation decomposition and reliable 3D feature definition.

关键词： Image sequences Matrix decomposition Parameter estimation Cameras

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Phase Retrieval Using the Transport-of-Intensity Equation

Phase Retrieval Using the Transport-of-Intensity Equation

引用

International Conference on Image and Graphics (ICIG)

作者： Hong Cheng Hong Liu Quanbing Zhang Sui Wei Education Ministry Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China College of Electronic Science and Technology Anhui University Hefei China

ISBN: (纸本)9781424452378

The transport-of-intensity equation describes the internal relationship between the intensity and phase distribution while wave is propagating in the mobile space. So the phase distribution can be solved by the use of the equation. It is an important measurement of non-interferometry. A new phase retrieval based on transport-of-intensity equation is presented. This method has the advantage of measuring only the close-up space on the plane of the intensity of light to the reconstruction of phase space. The problem of phase retrieval is translated into minimum of energy functional with linear convolution and total variation regularization. The one and two dimension experiment results show the correctness and validity of the algorithm.

关键词： Equations Phase measurement Space technology Holography Optical interferometry Extraterrestrial measurements Holographic optical components Image reconstruction signal processing algorithms Diffraction

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A Threshold RSA Signature Scheme with Traceable Signers

A Threshold RSA Signature Scheme with Traceable Signers

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International Conference on E-Business and Information System Security, EBISS

作者： Runhua Shi Hong Zhong Key Laboratory of Intelligent Computing & Signal Processing Anhui University Ministry of Education Hefei China School of Computer Science and Technology Anhui University Hefei China

This paper proposed a threshold RSA signature with traceable signers. In such scheme, there is a trusted center (TC), which generates all system parameters, the secret keys and the corresponding public keys of the group and all members, and exists a designated clerk, which creates a warrant recording the identities of the signers and other import information. Any t members can collaboratively generate the group signature with the help of the clerk, who verifies the validity of the partial signatures and combines them to the group signature. Any one can verify the correctness of the group signature by the public information and trace out to find the identities of the signers by the warrant.

关键词： Public key Forgery Digital signatures Laboratories signal processing Collaboration Cryptography Computer science Computer security Information security

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The Implementation of the Web Mining Based on XML Technology

The Implementation of the Web Mining Based on XML Technology

引用

International Conference on Computational Intelligence and Security

作者： Cheng Zheng Yong Fang Yaping Shen Key Laboratory of Intelligent Computing & Signal Processing Ministry of Education Anhui University Hefei China School of Computer Science and Technology Anhui University Hefei China

ISBN: (纸本)9781424454112

The rapid development of the Web technology makes the Web mining become the focus of the current data mining, and the XML technology also becomes the standard of the data exchange on the Web. The paper introduces the Web mining technology, implements a frame of the Web mining based on the XML technology according to the advantage of XML in the data description, describes the implementation process of specific Web mining, and puts forward a promoting scheme on solving XML documents with VTD which solves the difficult mining problem on the Web caused by the most of the non-structure information.

关键词： Web mining XML HTML Data mining Web pages Educational technology Data acquisition Databases Computational intelligence Paper technology

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3D imaging algorithm and implement for through-wall synthetic aperture radar

3D imaging algorithm and implement for through-wall syntheti...

引用

Midwest Symposium on Circuits and Systems (MWSCAS)

作者： Jiabing Zhu Yi Hong Liang Tao East China Research Institute of Electronic East China Research Institute of Electronic Engineering Hefei China Education Ministry Key Laboratory of Intelligent Computing and Signal Processing Anhui University Hefei China

ISBN: (纸本)9781424444793;9781424444809

Typical synthetic aperture radar (SAR) images are two-dimensional, providing range and azimuth information, but furnish few details with respect to elevation. First of all, one approach to extend SAR to three-dimensional imaging is considered. The simplest implementation of this would replace the single antenna element by a linear array oriented vertically. Secondly, the outlining data and image processing for a three-dimensional application is introduced in detail in the paper. Finally, simulation results show that the proposed algorithm is effective, while maintaining good image quality in terms of the reconstructed target response.

关键词： Azimuth Linear antenna arrays signal processing algorithms Synthetic aperture radar Spaceborne radar Image reconstruction Radar imaging Radar signal processing Pulse compression methods Image processing

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