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International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第10期8卷 171-190页

作者： Fan, Jing Wang, Jinwei Sun, Xingming Li, Ting Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing China School of Computer and Software Nanjing University of Information Science and Technology Nanjing China

In this paper, the quaternion discrete Cosine transform (QDCT) is applied to the color image encryption technology, and partial encryption technique of color image based on QDCT is proposed. Obtained the QDCT spectrum of color image by QDCT, the real and imaginary parts of QDCT coefficients are quantized and encoded with the color image quantization coefficient table and QDCT coefficients encoding method, and part of low and high frequency coefficients are encrypted in the encoding process. Simulation results and security performance analysis shows that the proposed scheme can obtain the effect of secure image encryption, reduce the amount of encryption data and transmission data, and well distribute the pixels of the original image when only part of the data are encrypted. What’s more, the proposed scheme can decrypt and recover the original image with high quality. Due to the large key space, the proposed scheme can resist exhaustive attacks. © 2015 SERSC.

关键词： Discrete cosine transforms

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A feature selection algorithm based on Hoeffding inequality and mutual information

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第11期8卷 433-444页

作者： Yin, Chunyong Feng, Lu Ma, Luyu Yin, Zhichao Wang, Jin School of Computer and Software Jiangsu Key Laboratory of Meteorological Observation and Information Processing Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science and Technology Nanjing China Nanjing No.1 Middle School Nanjing China

With the rapid development of the Internet, the application of data mining in the Internet is becoming more and more extensive. However, the data source’s complex feature redundancy leads that data mining process becomes very inefficient and complex. So feature selection research is essential to make data mining more efficient and simple. In this paper, we propose a new way to measure the correlation degree of internal features of dataset which is a mutation of mutual information. Additionally we also introduce Hoeffding inequality as constraint of constructing algorithm. During the experiments, we use C4.5 classification algorithm as test algorithm and compare HSF with BIF(feature selection algorithm based on mutual information). Experiments results show that HSF performances better than BIF[1] in TP and FP rate, what’s more the feature subset obtained by HSF can significantly improve the TP, FP and memory usage of C4.5 classification algorithm. © 2015 SERSC.

关键词： Feature Selection

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Erratum to: Fingerprint liveness detection using gradient-based texture features

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Signal, Image and Video Processing 2016年第2期11卷 389-389页

作者： Xia, Zhihua Lv, Rui Zhu, Yafeng Ji, Peng Sun, Huiyu Shi, Yun-Qing Jiangsu Engineering Center of Network Monitoring Jiangsu Collaborative Innovation Center on Atmospheric Environment and Equipment Technology College of Computer and Software Nanjing University of Information Science and Technology Nanjing China Department of Computer Science New York University New York USA Department of Electrical and Computer Engineering New Jersey Institute of Technology New York USA

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Attacks and Improvement of Quantum Sealed-Bid Auction with EPR Pairs

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Communications in Theoretical Physics 2014年第6期61卷 686-690页

作者：刘文杰王芳季赛瞿治国王小军 Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science & Technology School of Computer and Software Nanjing University of Information Science & Technology School of Electronic Engineering Dublin City University

Recently, an experimentally feasible three-party quantum sealed-bid auction protocol based on EPR pairs [Z.Y. Wang, Commun. Theor. Phys. 54 （2010） 997] was proposed. However, this study points out Wang＇s protocol cannot resist some internal bidders＇ attacks, such as the Twiee-CNOT attack, the collusion attack. A malicious bidder can launch the Twice-CNOT attack to obtain the other＇s bid, or the dishonest auctioneer may collude with one bidder and help him/her win the action by changing his/her bid. For preventing against these attacks, a simple solution by using the QKD-based message encryption and a post-confirmation mechanism by adopting the hash function are proposed.

关键词： quantum sealed-bid auction EPR pairs twice-CNOT attack collusion attack improvement

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An improved spatial-based fuzzy logic event detecting algorithm for wireless sensor networks

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International Journal of u- and e- Service, Science and Technology 2015年第4期8卷 265-278页

作者： Wang, Baowei Zhuang, Aoran Sun, Huiyu Li, Tao Sun, Xingming School of Computer and Software Nanjing University of Information Science and Technology Nanjing 210044 China Jiangsu Engineering Center of Network Monitoring Nanjing 210044 China Nanjing Wisdom Technology Ltd Nanjing 211800 China

At present, event detection technologies have become an important part in building efficient wireless sensor networks. One of the popular and excellent event detecting algorithms is the improved Neighbor-based Fuzzy Logic algorithm, namely INFLE, which belongs to machine learning technology. However, there may be some false positives when fire has not spread to the detected node. In this paper, we propose an improved spatial-based fuzzy logic event detection algorithm (ISFLE) to dramatically decrease the probability of false positives before fire has spread to the node. In our proposed ISFLE, we put “Distance” variable to the fuzzy logic system to determine node’s final state. The simulation results validate that our proposed ISFLE outperforms traditional INFLE in decreasing the number of false positives. © 2015 SERSC.

关键词： Fuzzy logic

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Cryptanalysis and Improvement of Quantum Private Comparison Protocol Based on Bell Entangled States

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Communications in Theoretical Physics 2014年第8期61卷 210-214页

作者：刘文杰刘超陈汉武李志强刘志昊 Jiangsu Engineering Center of Network Monitoring Nanjing University of Information Science & Technology School of Computer and Software Nanjing University of Information Science & Technology School of Computer Science and Engineering Southeast University College of Information Engineering Yangzhou University

Recently, Liu et al. [Commun. Theor. Phys. 57(2012) 583] proposed a quantum private comparison protocol based on entanglement swapping of Bell states, which aims to securely compare the equality of two participants' information with the help of a semi-honest third party(TP). However, the present study points out there is a fatal loophole in Liu et al.'s protocol, and TP can make Bell-basis measurement to know all the participants' secret inputs without being detected. To fix the problem, a simple solution, which uses one-time eavesdropper checking with decoy photons instead of twice eavesdropper checking with Bell states, is demonstrated. Compared with the original protocol,it not only reduces the Bell states consumption but also simplifies the protocol steps.

关键词： quantum private comparison Bell states entanglement swapping TP’s measurement attack improvement

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A copyright protection method for wireless sensor networks based on digital watermarking

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International Journal of Hybrid Information Technology 2015年第6期8卷 257-268页

作者： Wang, Baowei Su, Jianwei Zhang, Youdong Wang, Biqiang Shen, Jian Ding, Qun Sun, Xingming School of Computer and software Nanjing University of Information Science and Technology Nanjing210044 China Jiangsu Engineering Center of Network Monitoring Nanjing210044 China Department of Computer Engineering Huaiyin Institute of Technology Huaian223003 China Hubei Meteorological Service Center Wuhan430074 China

Wireless sensor networks are composed of numerous sensor nodes in the monitored area, which have been well applied in various practical areas. In these applications, data security from sensors has been threatened. Thereby in this paper, a digital watermarking based copyright protection method is proposed with regard to data security in wireless sensor networks. According to the particular characteristics of collecting data, the embedding capacity can be expanded using this method of manipulating both LSB and MSRB 4. bits of the data field. The data-related information is embedded as the digital watermarking into the data to be forwarded. When the base station receives the data, we use a lookup Table to improve the speed of data parsing. In order to achieve and verify the copyright protection on WSNs, both theoretical analysis and experimental results have demonstrated that the method can effectively detect the data reliability. In addition, we also generate two-dimensional code based on the test results, thereby facilitating the user's copyright authentication. © 2015 SERSC.

关键词： Sensor nodes

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An ACO-LB algorithm for task scheduling in the cloud environment

Journal of Software

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Journal of software 2014年第2期9卷 466-473页

作者： Xue, Shengjun Li, Mengying Xu, Xiaolong Chen, Jingyi Nanjing University of Information Science and Technology School of Computer and Software Nanjing China Nanjing University of Information Science and Technology Jiangsu Engineering Center of Network Monitoring Nanjing China

In the face of a large number of task requests which are submitted by users, the cloud data centers need not only to finish these massive tasks but also to satisfy the user's service demand. How to allocate virtual machine reasonably and schedule the tasks efficiently becomes a key problem to be solved in the cloud environment. This paper proposes a ACO-LB(Load balancing optimization algorithm based on ant colony algorithm) algorithm to solve the load imbalance of virtual machine in the process of task scheduling The ACO-LB algorithm can adapt to the dynamic cloud environment. It will not only shorten the makespan of task scheduling, but also maintain the load balance of virtual machines in the data center. In this paper, the workflow scheduling is simulated in CloudSim. The results show that the proposed ACO-LB algorithm has better performance and load balancing ability. © 2014 ACADEMY PUBLISHER.

关键词： Ant colony optimization

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An improved algorithm based on NSGA-II for cloud PDTs scheduling

Journal of Software

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Journal of software 2014年第2期9卷 443-450页

作者： Xue, Shengjun Liu, Fei Xu, Xiaolong Nanjing University of Information Science and Technology School of Computer and Software Nanjing China Nanjing University of Information Science and Technology Jiangsu Engineering Center of Network Monitoring Nanjing China

Partly dependent tasks (PDTs) scheduling with multi-objective optimization in cloud computing is an NP-hard problem. Taking the quality of service (QoS) requirements of users that use cloud computing into account, we set the cost and time requirements of handling the PDTs as the multiple objectives and present an improved algorithm based on the non-dominated sorting genetic algorithm-II (NSGA-II) to find the Pareto optimal set of the PDTs scheduling. In this paper, the similar task order crossover (STOX) operator is applied to make the evolution more efficient while the shift mutation operator is applied in the process of evolution to avoid the premature convergence. In addition, we present a new method named self-adapting crowding distance (SCD) operator, which can improve the diversity of individuals in the Pareto-optimal front. The simulation results and analysis show that the proposed algorithm performs better than NSGA-II in maintaining the diversity and the distribution of the Pareto-optimal solutions in the cloud PDTs scheduling. © 2014 ACADEMY PUBLISHER.

关键词： Multiobjective optimization

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An Optimized Strategy for Speculative Execution in a Heterogeneous Environment

An Optimized Strategy for Speculative Execution in a Heterog...

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International Conference on Future Generation Communication and networking (FGCN)

作者： Qi Liu Weidong Cai Zhangjie Fu Jian Shen Nigel Linge School of Computer and Software Nanjing University of Information Science and Technology Nanjing Jiangsu China Jiangsu Engineering Centre of Network Monitoring Nanjing University of Information Science and Technology Nanjing Jiangsu China The University of Salford Salford Greater Manchester UK

MapReduce is a popular programming model for the purposes of processing large data sets. Speculative execution known as an approach for dealing with the above problems works by backing up those tasks running on a low performance machine to a higher one. In this paper, we have modified some pitfalls and taken computer hardware into consideration (HWC-Speculation). We also have implemented it in Hadoop-2.6 and experiment results show that our method can assign tasks evenly, improve the performance of MRV2 and decrease the execution time.

关键词： Cloud computing Benchmark testing Servers Program processors Virtual machining Information science Programming

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