检索结果-南通市图书馆

维普期刊数据库博看期刊

Efficient privacy-preserving classification construction model with differential privacy technology

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Engineering and Electronics 2017年第1期28卷 170-178页

作者： lin Zhang Yan Liu Ruchuan Wang Xiong Fu qiaomin lin College of Computer Nanjing University of Posts and TelecommunicationsNanjing 210003China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing 210003China

To address the problem of privacy disclosure during data mining, a new privacy-preserving decision tree classification construction model based on a differential privacy-protection mechanism is presented. An efficient classifier that uses feedback to add two types of noise via Laplace and exponential mechanisms to perturb the calculation results are introduced to the construction algorithm that provides a secure data access interface for users. Different split solutions for attributes of continuous and discrete values are provided and used to optimize the search scheme to reduce the error rate of the classifier. By choosing an available quality function with lower sensitivity for making decisions and improving the privacy budget allocation methods, the algorithm effectively resists malicious attacks that depend on the background knowledge. The potential problem of obtaining personal information by guessing unknown sensitive nodes of tree-type data is solved correspondingly. The better privacy preservation and accuracy of this new algorithm are shown by simulation experiments. © 1990-2011 Beijing Institute of Aerospace Information.

关键词： Budget control Data mining Decision trees Trees (mathematics)

Trust Evaluation Model Based on PSO and LSTM for Huge Information Environments

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2021年第1期30卷 92-101页

作者： ZHANG lin HUANG Yanwen XUAN Jie FU Xiong lin qiaomin WANG Ruchuan College of Computer Nanjing University of Posts and Telecommunications Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks

Due to the challenge of increasing data volume, the traditional trust model is unable to manage data with high efficiency and effectively extract useful information hidden in big data. To fully utilize big data and combine machine learning with trust evaluation, a trust evaluation model based on Long short-term memory(LSTM) is presented. The powerful learning ability,expressive ability and dynamic timing of LSTM can be applied to study data while avoiding the vanishing and exploding gradient phenomena of traditional Recurrent neural networks(RNNs) to ensure that the model can learn sequences of random length and provide accurate trust evaluation. Targeting the performance instability caused by the LSTM model’s random initialization of weights and thresholds, Particle swarm optimization(PSO), one of the intelligent algorithms, is introduced to find global optimal initial weights and *** proved that the trust model proposed in this paper has high accuracy and contributes a new idea for trust evaluation in big data environments.

关键词： Big data Particle swarm optimization LSTM neural network Trust model

Cleaning RFID data streams based on K-means clustering method

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

The Journal of China Universities of Posts and Telecommunications 2020年第2期27卷 72-81页

作者： lin qiaomin Fa Anqi Pan Min Xie Qiang Du Kun Sheng Michael College of Computer Nanjing University of Posts and TelecommunicationsNanjing 210023China College of Education Science and Technology Nanjing University of Posts and TelecommunicationsNanjing 210023China Department of Computing Macquarie UniversitySydney 2109Australia College of Overseas Education Nanjing University of Posts and TelecommunicationsNanjing 210023China Abstract

Currentlyradio frequency identification(RFID)technology has been widely used in many kinds of *** retailers use RFID readers with multiple antennas to monitor all tagged ***,because of the interference from environment and limitations of the radio frequency technology,RFID tags are identified by more than one RFID antenna,leading to the false positive *** address this issue,we propose a RFID data stream cleaning method based on K-means to remove those false positive readings within sampling ***,we formulate a new data stream model which adapts to our cleaning *** we present the preprocessing method of the data stream model,including sliding window setting,feature extraction of data stream and ***,we introduce a novel way using K-means clustering algorithm to clean false positive ***,the effectiveness and efficiency of the proposed method are verified by *** achieves a good balance between performance and price.

关键词： false positive reading data stream K-means RFID

A Novel Routing Strategy to Provide Source Location Privacy in Wireless Sensor Networks

在线全文

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2016年第4期21卷 298-306页

作者： LI Shuming XIAO Yan lin qiaomin QI Zhuzhu Downstream Hydrology and Water Resources Survey Bureau Yangtze River Water Conservancy Committee College of Computer Nanjing University of Posts and Telecommunications

In order to secure the source location privacy when information is sent back to the base station in wireless sensor network, we propose a novel routing strategy which routes the packets to the base station through three stages： directional random routing, h-hop routing in the annular region and the shortest path routing. These stages provide two fold protections to prevent the source location from being tracked down by the adversary. The analysis and simulation results show that proposed scheme, besides providing longer safety period, can significantly reduce energy consumption compared with two baseline schemes.

关键词： source location privacy wireless sensor networks(WSN) safety period energy efficiency

ENERGY EFFICIENT DISTRIBUTED STEGANOGRAPHY FOR SECURE COMMUNICATION IN WIRELESS MULTIMEDIA SENSOR NETWORKS

在线全文

学校读者我要写书评

暂无评论

Journal of Electronics(China) 2013年第1期30卷 9-16页

作者： lin qiaomin Wang Ruchuan Ye Ning Wang Zhongqin College of Computer Nanjing University of Posts and Telecommunications Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Ministry of Education Department of Information Science Nanjing College for Population Management

A secure communication mechanism is necessary in the applications of Wireless Multimedia Sensor Networks (WMSNs), which is more vulnerable to security attacks due to the presence of multimedia data. Additionally, given the limited technological resources (in term of energy, computation, bandwidth, and storage) of sensor nodes, security and privacy policies have to be combined with energy-aware algorithms and distributed processing of multimedia contents in WMSNs. To solve these problems in this paper, an energy efficient distributed steganography scheme, which combines steganography technique with the concept of distributed computing, is proposed for secure communication in WMSNs. The simulation results show that the proposed method can achieve considerable energy efficiency while assuring the communication security simultaneously.

关键词： Discrete Wavelet Transform (DWT) Distributed steganography Energy efficiency Perfect hash Wireless Multimedia Sensor Networks (WMSNs)

在线全文

学校读者我要写书评

暂无评论

关汉卿杂剧中的和谐观

河北广播电视大学学报 2005年第5期10卷 46-48页

作者：林巧敏浙江广播电视大学温岭分校温岭317500

中国传统文化中一个显著的特点是“和”、“和谐”,而元代则是中国历史上一个极不和谐的社会。关汉卿杂剧创作正是在这样一个社会和文化的背景下,从创作心态、团圆心理、死亡意识及剧中人物的人格美等方面表现了他对包容性极强的中国传... 详细信息

中国传统文化中一个显著的特点是“和”、“和谐”,而元代则是中国历史上一个极不和谐的社会。关汉卿杂剧创作正是在这样一个社会和文化的背景下,从创作心态、团圆心理、死亡意识及剧中人物的人格美等方面表现了他对包容性极强的中国传统文化和谐观的继承。

关键词：和谐悲剧团圆死亡意识

在线全文

学校读者我要写书评

暂无评论

基于方差时间图法的关键参数选取方法

信息化研究 2012年第1期38卷 21-24页

作者：虞传明王汝传林巧民南京邮电大学计算机学院南京210003 江苏省无线传感网高技术研究重点实验室南京210003

在深入研究方差时间图法(Variance-time plots,VTP)的基础上,针对VTP算法中的3个关键参数:数据块数、采样数据长度和数据更新度参数进行了详细测试研究,分别对三者给出比较恰当合理的具体值,并提出基于上述参数值的分布式拒绝服务(DDoS... 详细信息

在深入研究方差时间图法(Variance-time plots,VTP)的基础上,针对VTP算法中的3个关键参数:数据块数、采样数据长度和数据更新度参数进行了详细测试研究,分别对三者给出比较恰当合理的具体值,并提出基于上述参数值的分布式拒绝服务(DDoS)攻击判决门限条件。

关键词：方差时间图法自相似参数选取 Hurst参数

在线全文

学校读者我要写书评

暂无评论

基于贝叶斯算法的垃圾邮件过滤技术

南京师范大学学报（工程技术版） 2005年第4期5卷 61-64页

作者：林巧民许建真许棣华王诚南京邮电大学信息网络中心江苏南京210003 南京邮电大学信息工程系江苏南京210003

对基于朴素贝叶斯算法的垃圾邮件过滤技术进行了研究分析和实验验证.介绍了向量空间模型(VSM)方法以及特征向量抽取方法,推导和研究了引入“特征之间互相独立”假设的朴素贝叶斯分类算法.采用K次交叉验证的方法,以收集的一些邮件为语料... 详细信息

对基于朴素贝叶斯算法的垃圾邮件过滤技术进行了研究分析和实验验证.介绍了向量空间模型(VSM)方法以及特征向量抽取方法,推导和研究了引入“特征之间互相独立”假设的朴素贝叶斯分类算法.采用K次交叉验证的方法,以收集的一些邮件为语料,应用朴素贝叶斯分类算法,通过训练集计算得到类别的先验概率和特征项的类条件概率,并以此为基础对测试集中的邮件进行归属判断,以正确率和召回率为指标给出了实验结果.

关键词：垃圾邮件文本分类向量空间模型贝叶斯算法

在线全文

学校读者我要写书评

暂无评论

基于GPRS的环境测控系统的设计与实现

中国新通信 2006年第15期8卷 52-55页

作者：张祖昶许建真钱辉兵林巧民胡晓刚南京邮电大学南京210003 江苏移动通信有限责任公司网络部南京210029

本文针对当前环境监测的需要,提出了一个基于GPRS网络传输的环境测控系统的解决方案,并详细论述了该系统的通信模块部分的设计与实现;对该系统的性能进行了分析;最后对该系统做出结论性的评述,提出该系统需要进一步解决的问题。

关键词：通用分组无线服务 CMPP 环境测控无线通信