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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 Low Energy Consumption Distributed Fault Detection Mechanism in Wireless Sensor Network显示文摘Wireless sensor network is an important technical support for ubiquitous communication. For the serious impacts of network failure caused by the unbalanced energy consumption of sensor nodes, hardware failure and attacker intrusion on data transmission, a low energy consumption distributed fault detection mechanism in wireless sensor network(LEFD) is proposed in this paper. Firstly, the time correlation information of nodes is used to detect fault nodes in LEFD, and then the spatial correlation information is adopted to detect the remaining fault nodes, so as to check the states of nodes comprehensively and improve the efficiency of data transmission. In addition, the nodes do not need to exchange information with their neighbor nodes in the initial detection process since LEFD adopts the data sensed by node itself to detect some types of faults, thus reducing the energy consumption of nodes effectively. Finally, LEFD also considers the nodes that may have transient faults. Performance analysis and simulation results show that the proposed detection mechanism can improve the transmission performance and reduce the energy consumption of network effectively. | Shuang Jia Lin Ma Danyang Qin | 2019 | China Communications2019，16，3： | 1 |
| 3 | A fast local routing repair scheme for wireless mobile ad hoc network显示文摘Mobile ad hoc network(MANET)is a centerless packet radio network which does not use fixed infrastructure.It has recently received tremendous attention due to its capabilities of self-configuration and self-maintenance.However,attenuation and interference caused by node mobility and wireless channel sharing weaken the stability of communication links.A mathematical exploring model for the next hop has been established based on the optimal exploring theory.The negative impact of wireless routes discontinuity has been alleviated by a novel fast local routing repair scheme(FLRRS)proposed in this paper,wherein the route requirement zone has been restricted into a pie slice region on intermediate nodes according to the solution of exploring equations.The scheme is an effective approach in reducing the average end-to-end delay during routing maintenance.It also allows continuous packet forwarding for fault resilience.NS-2 based simulation results showed remarkable successful packet delivery rate and end-to-end delay improvements of source-initiated routing protocol with the fast local repair scheme,especially in the case of high dynamic environments with heavy traffc loads. | QIN DanYang SHA XueJun XU YuBin | 2011 | Science China(Information Sciences)2011，54，1： | 1 |
| 4 | Detecting and adaptive responding mechanism for mobile WSN显示文摘Mobile wireless sensor network(WSN)composed by mobile terminals has a dynamic topology and can be widely used in various fields.However,the lack of centralized control,dynamic topology and limited energy supply make the network layer of mobile WSN be vulnerable to multiple attacks,such as black hole(BH),gray hole(GH),flooding attacks(FA)and rushing attacks(RU).Existing researches on intrusion attacks against mobile WSN,currently,tend to focus on targeted detection of certain types of attacks.The defense methods also have clear directionality and is unable to deal with indeterminate intrusion attacks.Therefore,this work will design an indeterminate intrusion attack oriented detecting and adaptive responding mechanism for mobile WSN.The proposed mechanism first uses a test sliding window(TSW)to improve the detecting accuracy,then constructs parameter models of confidence on attack(COA),network performance degradation(NPD)and adaptive responding behaviors list,finally adaptively responds according to the decision table,so as to improve the universality and flexibility of the detecting and adaptive responding mechanism.The simulation results show that the proposed mechanism can achieve multiple types of intrusion detecting in multiple attack scenarios,and can achieve effective response under low network consumption. | 赵敏 Qin Danyang Guo Ruolin Xu Guangchao | 2020 | High Technology Letters2020，26，3： | 0 |
| 5 | Optimization of MAC algorithm based on IEEE 802.15.4 in indoor positioning system显示文摘The mobility of the targets asks for high requirements of the locating speed in indoor positioning systems.The standard medium access control(MAC)algorithm will often cause lots of packet conflicts and high transmission delay if multiple users communicate with one beacon at the same time,which will severely limit the speed of the system.Therefore,an optimized MAC algorithm is proposed based on channel reservation to enable users to reserve beacons.A frame threshold is set to ensure the users with shorter data frames do not depend on the reservation mechanism,and multiple users can achieve packets switching with relative beacon in a fixed sequence by using frequency division multiplexing technology.The simulation results show that the optimized MAC algorithm proposed in this paper can improve the positioning speed significantly while maintaining the positioning accuracy.Moreover,the positioning accuracy can be increased to a certain extent if more channel resources can be obtained,so as to provide effective technical support for the location and tracking applications of indoor moving targets. | 孙冠宇 Qin Danyang Lan Tingting | 2021 | High Technology Letters2021，27，1： | 0 |
| 6 | An effective indoor radio map construction scheme based on crowdsourced samples显示文摘The crowdsourcing-based WLAN indoor localization system has been widely promoted for the effective reduction of the workload from the offline phase data collection while constructing radio maps.Aiming at the problem of the inaccurate location annotation of the crowdsourced samples,the existing invalid access points(APs)in collected samples,and the uneven sample distribution,as well as the diverse terminal devices,which will result in the construction of the wrong radio map,an effective WLAN indoor radio map construction scheme(WRMCS)is proposed based on crowdsourced samples.The WRMCS consists of 4 main modules:outlier detection,key AP selection,fingerprint interpolation,and terminal device calibration.Moreover,an online localization algorithm is put forward to estimate the position of the online test fingerprint.The simulation results show that the proposed scheme can achieve higher localization accuracy than the peer schemes,and possesses good effectiveness and robustness at the same time. | 郭若琳 Qin Danyang Zhao Min Xu Guangchao | 2020 | High Technology Letters2020，26，4： | 0 |
| 7 | Research on color image matching method based on feature point compensation in dark light environment显示文摘Image matching refers to the process of matching two or more images obtained at different time,different sensors or different conditions through a large number of feature points in the image.At present,image matching is widely used in target recognition and tracking,indoor positioning and navigation.Local features missing,however,often occurs in color images taken in dark light,making the extracted feature points greatly reduced in number,so as to affect image matching and even fail the target recognition.An unsharp masking(USM)based denoising model is established and a local adaptive enhancement algorithm is proposed to achieve feature point compensation by strengthening local features of the dark image in order to increase amount of image information effectively.Fast library for approximate nearest neighbors(FLANN)and random sample consensus(RANSAC)are image matching algorithms.Experimental results show that the number of effective feature points obtained by the proposed algorithm from images in dark light environment is increased,and the accuracy of image matching can be improved obviously. | 唐华鹏 QIN Danyang YAN Mengying YANG Jiaqiang ZHANG Gengxin | 2023 | High Technology Letters2023，29，1： | 0 |
| 8 | 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 |
| 9 | Susceptibility of male fire ants (Solenopsis invicta) to Metarhizium anisopliae显示文摘Increasing evidences indicate that male haploid are more susceptible to parasites than female diploid(workers,alate females and queens)although the generality and reasons causing such susceptibility are still under debate.The male haploids in eusocial Hymenoptera are perfect for examining the susceptibility assumption and unveiling the molecular mechanisms of this assumption.In the present study,the males,workers and alate females of red imported fire ants(Solenopsis invicta)were challenged with entomopathogenic fungus Metarrhizium anisopliae.By measuring the LC50 values of M.anisopliae against different castes of S.invicta,we found that haploid males suffered from reduced disease resistance than diploid workers and alate females,a proof that haploid susceptibility was diminished in S.invicta.In this study we also examined the assumption that males invest less in innate immunity contributing to haploid susceptibility based on the transcript levels of genes encoding antimicrobial peptides(AMP)with quantitative reverse transcription-PCR(qRT-PCR).We found that infection increased the mRNA levels of hymenoptaecin in females(workers and alate females),but not in males;no significant difference was found in the mRNA levels of defensin,transferrin or crustin between infected ants and control ants in each sxe/castes.However,this study suggested that any resistance traits like behavioral and other immunological responses,are contributing to haploid susceptibility. | Qiu Hualong Xu Jinzhu Zhao Danyang Tian Longyan Yang Hua Lian Tao Qin Changsheng | 2019 | 林业与环境科学2019，35，5： | 0 |
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