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| 1 | Multi-label learning algorithm with SVM based association显示文摘Multi-label learning is an active research area which plays an important role in machine learning. Traditional learning algorithms, however, have to depend on samples with complete labels. The existing learning algorithms with missing labels do not consider the relevance of labels, resulting in label estimation errors of new samples. A new multi-label learning algorithm with support vector machine(SVM) based association(SVMA) is proposed to estimate missing labels by constructing the association between different labels. SVMA will establish a mapping function to minimize the number of samples in the margin while ensuring the margin large enough as well as minimizing the misclassification probability. To evaluate the performance of SVMA in the condition of missing labels, four typical data sets are adopted with the integrity of the labels being handled manually. Simulation results show the superiority of SVMA in dealing with the samples with missing labels compared with other models in image classification. | 冯攀 Qin Danyang Ji Ping Ma Jingya Zhang Yan Yang Songxiang | 2019 | High Technology Letters2019，25，1： | 3 |
| 2 | Research on stateful public key based secure data aggregation model for wireless sensor networks显示文摘Data aggregation technology reduces traffic overhead of wireless sensor network and extends effective working time of the network,yet continued operation of wireless sensor networks increases the probability of aggregation nodes being captured and probability of aggregated data being tampered.Thus it will seriously affect the security performance of the network. For network security issues,a stateful public key based SDAM( secure data aggregation model) is proposed for wireless sensor networks( WSNs),which employs a new stateful public key encryption to provide efficient end-to-end security. Moreover,the security aggregation model will not impose any bound on the aggregation function property,so as to realize the low cost and high security level at the same time. | 秦丹阳 Jia Shuang Yang Songxiang Wang Erfu Ding Qun | 2017 | High Technology Letters2017，23，1： | 2 |
| 3 | Extracting the Cores of Implicit Communities显示文摘In this paper,we improve the trawling and point out some communities missed by trawling. We use the DBG(Dense Bipartite Graph) to identify a structure of a potential community instead of CBG(Complete Bipartite Graph) . Based on DBG,we proposed a new method based on edge removal to extract cores from a web graph. Moreover,we improve the crawler to save only potential pages as fans of a core and save a lot of disk storage space. To evaluate the set of cores whether or not belong to a community,the statistics of term frequency is used. In the paper,the dataset of experiment were crawled under domain '.cn'. The result show that the our algorithm works properly and some new cores can be found by our method. | YANG Nan LIN Songxiang GAO Qiang | 2007 | Wuhan University Journal of Natural Sciences2007，12，5： | 0 |
| 4 | Research on Link Duration for Mobile Multihop Communication Networks显示文摘Mobile multihop communication network is an important branch of modern mobile communication system, and is an important technical support for ubiquitous communication. The random movement of the nodes makes the networking be more flexible, but the frequently changing topology will decrease the link duration between nodes significantly, which will increase the packets loss probability and affect the network communication performance. Aiming at the problem of declining link duration caused by nomadic characteristics in mobile multihop communication network, four link duration models for possible moving states are established based on different features in real networking process in this paper, which will provide reliable criterion for the optimal routing selection. Model analysis and simulation results show that the reliable route established by the proposed model will effectively extend the link duration, and can enhance the global stability of the mobile multihop information transmission, so as to provide new option to transmission reliability improvement for the mobile communication network. | Danyang Qin Shuang Jia Songxiang Yang Erfu Wang Qun Ding | 2016 | China Communications2016，13，8： | 0 |
| 5 | Study on key management scheme for heterogeneous wireless sensor networks显示文摘Heterogeneous wireless sensor network( HWSN) is composed of different functional nodes and is widely applied. With the deployment in hostile environment,the secure problem of HWSN is of great importance; moreover,it becomes complex due to the mutual characteristics of sensor nodes in HWSN. In order to enhance the network security,an asymmetric key pre-distributed management scheme for HWSN is proposed combining with authentication process to further ensure the network security; meanwhile,an effective authentication method for newly added nodes is presented. Simulation result indicates that the proposed scheme can improve the network security while reducing the storage space requirement efficiently. | 秦丹阳 Ma Jingya Zhang Yan Yang Songxiang Ji Ping Feng Pan | 2018 | High Technology Letters2018，24，4： | 0 |
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