期刊：
IEEE Transactions on Knowledge and Data Engineering,2017年29(6):1226-1239 ISSN：1041-4347
通讯作者：
Zhou, Guangyou
作者机构：
[Huang, Jimmy Xiangji; Zhou, Guangyou] Cent China Normal Univ, Sch Comp, Wuhan 430072, Hubei, Peoples R China.;[Huang, Jimmy Xiangji; Zhou, Guangyou] York Univ, Sch Informat Technol, Toronto, ON M3J 1P3, Canada.
通讯机构：
[Zhou, Guangyou] C;[Zhou, Guangyou] Y;Cent China Normal Univ, Sch Comp, Wuhan 430072, Hubei, Peoples R China.;York Univ, Sch Informat Technol, Toronto, ON M3J 1P3, Canada.
关键词：
community question answering;information retrieval;Natural language processing;question retrieval;text mining
作者机构：
[Tan, Liansheng; Tang, Shengda] Cent China Normal Univ, Dept Comp Sci, Wuhan, Hubei, Peoples R China.;[Tang, Shengda] Guangxi Normal Univ, Sch Math & Stat, Guilin, Guangxi, Peoples R China.;[Chan, Sammy] City Univ Hong Kong, Dept Elect Engn, 83 Tat Chee Ave, Kowloon, Hong Kong, Peoples R China.
通讯机构：
[Tan, Liansheng] C;Cent China Normal Univ, Dept Comp Sci, Wuhan, Hubei, Peoples R China.
期刊：
Security and Communication Networks,2017年2017:5437403:1-5437403:6 ISSN：1939-0114
通讯作者：
Hsu, Ching-Fang
作者机构：
[Harn, Lein] Univ Missouri, Dept Comp Sci Elect Engn, Kansas City, MO 64110 USA.;[Hsu, Ching-Fang] Cent China Normal Univ, Comp Sch, Wuhan 430079, Hubei, Peoples R China.;[Zhou, Junwei; Xia, Zhe] Wuhan Univ Technol, Dept Comp Sci, Wuhan 430071, Hubei, Peoples R China.;[Zhou, Junwei; Xia, Zhe] Wuhan Univ Technol, Hubei Key Lab Transportat Internet Things, Wuhan, Hubei, Peoples R China.
通讯机构：
[Hsu, Ching-Fang] C;Cent China Normal Univ, Comp Sch, Wuhan 430079, Hubei, Peoples R China.
摘要：
In a secret-sharing scheme, the secret is shared among a set of shareholders, and it can be reconstructed if a quorum of these shareholders work together by releasing their secret shares. However, in many applications, it is undesirable for nonshareholders to learn the secret. In these cases, pairwise secure channels are needed among shareholders to exchange the shares. In other words, a shared key needs to be established between every pair of shareholders. But employing an additional key establishment protocol may make the secret-sharing schemes significantly more complicated. To solve this problem, we introduce a new type of secret-sharing, called protected secret-sharing (PSS), in which the shares possessed by shareholders not only can be used to reconstruct the original secret but also can be used to establish the shared keys between every pair of shareholders. Therefore, in the secret reconstruction phase, the recovered secret is only available to shareholders but not to nonshareholders. In this paper, an information theoretically secure PSS scheme is proposed, its security properties are analyzed, and its computational complexity is evaluated. Moreover, our proposed PSS scheme also can be applied to threshold cryptosystems to prevent nonshareholders from learning the output of the protocols.
摘要：
Microbiome datasets are often comprised of different representations or views which provide complementary information, such as genes, functions, and taxonomic assignments. Integration of multi-view information for clustering microbiome samples could create a comprehensive view of a given microbiome study. Similarity network fusion (SNF) can efficiently integrate similarities built from each view of data into a unique network that represents the full spectrum of the underlying data. Based on this method, we develop a Robust Similarity Network Fusion (RSNF) approach which combines the strength of random forest and the advantage of SNF at data aggregation. The experimental results indicate the strength of the proposed strategy. The method substantially improves the clustering performance significantly comparing to several state-of-the-art methods in several datasets.
期刊：
JOURNAL OF INTELLIGENT & FUZZY SYSTEMS,2016年30(1):245-256 ISSN：1064-1246
通讯作者：
Jin, Cong
作者机构：
[Jin, Cong] Cent China Normal Univ, Sch Comp, Wuhan 430079, Peoples R China.;[Jin, Shu-Wei] Ecole Normale Super, Dept Phys, 24 Rue Lhomond, F-75231 Paris 5, France.
通讯机构：
[Jin, Cong] C;Cent China Normal Univ, Sch Comp, Wuhan 430079, Peoples R China.
关键词：
Digital image watermark;fuzzy rough sets;human visual system;imperceptibility;robustness;wavelets
期刊：
Proceedings of the Annual Conference of the International Speech Communication Association, INTERSPEECH,2016年08-12-September-2016:2706-2710 ISSN：2308-457X
通讯作者：
Yan, Rui
作者机构：
[Song, Yiping; Yan, Rui; Mou, Lili; Zhang, Ming] Peking Univ, Beijing, Peoples R China.;[Mou, Lili] Peking Univ, MoE, Key Lab High Confidence Software Technol, Beijing, Peoples R China.;[Yan, Rui] Baidu Inc, Nat Language Proc Dept, Beijing, Peoples R China.;[Hu, Xiaohua; Yan, Rui; Yi, Li; Zhu, Zinan] Cent China Normal Univ, Sch Comp, Wuhan, Hubei, Peoples R China.
通讯机构：
[Yan, Rui] P;[Yan, Rui] B;[Yan, Rui] C;Peking Univ, Beijing, Peoples R China.;Baidu Inc, Nat Language Proc Dept, Beijing, Peoples R China.
会议名称：
17th Annual Conference of the International-Speech-Communication-Association (INTERSPEECH 2016)
会议时间：
SEP 08-12, 2016
会议地点：
San Francisco, CA
会议主办单位：
[Song, Yiping;Mou, Lili;Yan, Rui;Zhang, Ming] Peking Univ, Beijing, Peoples R China.^[Mou, Lili] Peking Univ, MoE, Key Lab High Confidence Software Technol, Beijing, Peoples R China.^[Yan, Rui] Baidu Inc, Nat Language Proc Dept, Beijing, Peoples R China.^[Yan, Rui;Yi, Li;Zhu, Zinan;Hu, Xiaohua] Cent China Normal Univ, Sch Comp, Wuhan, Hubei, Peoples R China.
作者机构：
[Jiang, Xingpeng; He, Tingting; Hu, Xiaohua] Cent China Normal Univ, Sch Comp Sci, Wuhan 430079, Peoples R China.;[Hu, Xiaohua] Drexel Univ, Coll Comp & Informat, Philadelphia, PA 19104 USA.
通讯机构：
[He, Tingting] C;Cent China Normal Univ, Sch Comp Sci, Wuhan 430079, Peoples R China.
关键词：
microbiome;information distance;data visualization;density clustering;microbial community
摘要：
Clustering technology is a method for grouping data points into clusters containing a group of similar data points. In a real dataset such as microbiome data, the data points are presented as profiles or a probability distribution. These data points form the periphery of a cluster, making it difficult to identify the real clustering structure. In this study, we used density clustering on several distance measures to overcome this difficulty. Experiments using a real dataset indicated that the Manhattan distance is an appropriate distance measure for clustering analysis of microbiome data.
摘要：
As software entities that migrate among nodes, mobile agents (MAs) are able to deliver and execute codes for flexible application re-tasking, local processing, and collaborative signal and information processing. In contrast to the conventional wireless sensor network operations based on the client-server computing model, recent research has shown the efficiency of agent-based data collection and aggregation in collaborative and ubiquitous environments. In this paper, we consider the problem of calculating multiple itineraries for MAs to visit source nodes in parallel. Our algorithm iteratively partitions a directional sector zone where the source nodes are included in an itinerary. The length of an itinerary is controlled by the angle of the directional sector zone in such a way that near-optimal routes for MAs can be obtained by selecting the angle efficiently in an adaptive fashion. Simulation results confirm the effectiveness of the proposed algorithm as well as its performance gain over alternative approaches.
摘要：
The coherent ultra-dense wavelength division multiplexed passive optical network (UDWDM-PON) has been widely studied recently, in which the envelop detection based coherent reception of on-off keying (00K) signal has been shown to possess both high receiver sensitivity and tolerance against laser linewidth/chirp. In order to increase the spectral efficiency (SE) to 2 bit/s/Hz, researchers formulated a hybrid DBPSK/ASK-2 modulation using the silicon Mach-Zehnder modulator (MZM), where both amplitude and phase modulation are employed. The experimental result shows that the proposed DBPSK/ASK-2 modulation is of better performance than PAM-4 at the same SE of 2 bit/s/Hz. When the low-cost silicon MZM and DFB laser of 4-MHz linewidth are employed, the receiver sensitivity of DBPSK/ASK-2 exceeds that of the PAM-4 by about 5.7 dB. This work can achieve about 46 dBm receiver sensitivity at 2.5 GBaud after transmission over 80-km standard single mode fiber (SSMF). The proposed DBPSK/ASK-2 modulation using low-cost silicon MZM and DFB laser is considered as a practical and reliable method for the future UDWDM-PON at the SE of 2 bit/s/Hz. (C) 2016 Elsevier B.V. All rights reserved.
摘要：
Optical burst switching (OBS) provides a future-proof alternative to the current electronic switching in the backbone. In this letter, we study a horizon-based single-channel multi-class OBS node, for which the multiple traffic classes are differentiated using a different offset time of each class. By assuming Poisson burst arrivals and general burst size distribution, using the well-known level crossing method, we obtain the expressions of per-class blocking probabilities. We validate our results using a numerical example.
作者：
Zhou, Guangyou*;Xie, Zhiwen;He, Tingting（何婷婷）;Zhao, Jun;Hu, Xiaohua Tony
期刊：
IEEE-ACM TRANSACTIONS ON AUDIO SPEECH AND LANGUAGE PROCESSING,2016年24(7):1305-1314 ISSN：2329-9290
通讯作者：
Zhou, Guangyou
作者机构：
[He, Tingting; Zhou, Guangyou; Zhao, Jun; Xie, Zhiwen; Hu, Xiaohua Tony] Cent China Normal Univ, Sch Comp Sci, Wuhan 430079, Peoples R China.;[Zhao, Jun] Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China.;[Hu, Xiaohua Tony] Drexel Univ, Coll Comp & Informat, Philadelphia, PA 19104 USA.
通讯机构：
[Zhou, Guangyou] C;Cent China Normal Univ, Sch Comp Sci, Wuhan 430079, Peoples R China.
关键词：
Community Question Answering;Information Retrieval;Natural Language Processing;Question Retrieval;Text Mining
摘要：
Community question answering (CQA) has become an increasingly popular research topic. In this paper, we focus on the problem of question retrieval. Question retrieval in CQA can automatically find the most relevant and recent questions that have been solved by other users. However, the word ambiguity and word mismatch problems bring about new challenges for question retrieval in CQA. State-of-the-art approaches address these issues by implicitly expanding the queried questions with additional words or phrases using monolingual translation models. While useful, the effectiveness of these models is highly dependent on the availability of quality parallel monolingual corpora (e.g., question-answer pairs) in the absence of which they are troubled by noise issues. In this work, we propose an alternative way to address the word ambiguity and word mismatch problems by taking advantage of potentially rich semantic information drawn from other languages. Our proposed method employs statistical machine translation to improve question retrieval and enriches the question representation with the translated words from other languages via non-negative matrix factorization. Experiments conducted on real CQA data sets show that our proposed approach is promising.
期刊：
Journal of Visual Communication and Image Representation,2016年34(C):167-175 ISSN：1047-3203
通讯作者：
Jin, Cong
作者机构：
[Jin, Cong] Cent China Normal Univ, Sch Comp, Wuhan 430079, Peoples R China.;[Jin, Shu-Wei] Ecole Normale Super, Dept Phys, 24 Rue Lhomond, F-75231 Paris 5, France.
通讯机构：
[Jin, Cong] C;Cent China Normal Univ, Sch Comp, Wuhan 430079, Peoples R China.
关键词：
Automatic image annotation;Improve performance;Image distance metric learning;Neighborhood sets;Algorithm performance;Visual similarity;Semantic similarity;Probability density ratio
摘要：
Since there is semantic gap between low-level visual features and high-level image semantic, the performance of many existing content-based image annotation algorithms is not satisfactory. In order to bridge the gap and improve the image annotation performance, a novel automatic image annotation (AIA) approach using neighborhood set (NS) based on image distance metric learning (IDML) algorithm is proposed in this paper. According to IDML, we can easily obtain the neighborhood set of each image since obtained image distance can effectively measure the distance between images for AIA task. By introducing NS, the proposed AIA approach can predict all possible labels of the image without caption. The experimental results confirm that the introduction of NS based on IDML can improve the efficiency of AIA approaches and achieve better annotation performance than the existing AIA approaches. (C) 2015 Elsevier Inc. All rights reserved.
期刊：
International Journal of Wireless and Mobile Computing,2016年11(1):18-23 ISSN：1741-1084
通讯作者：
Shen, Xianjun(xjshen@mail.ccnu.edu.cn)
作者机构：
[Hu, Wenjie] College of Information Engineering, Xianning Vocational Technical College, Xianning, Hubei, China;[Yang, Jincai; Chen, Yao; Shen, Xianjun] School of Computer, Central China Normal University, Wuhan, Hubei, China;Collaborative & Innovative Center for Educational Technology, Central China Normal University, Wuhan, Hubei, China;[Shen, Xianjun] Collaborative and Innovative Center for Educational Technology, Central China Normal University, Wuhan, Hubei, China
通讯机构：
School of Computer, Central China Normal University, Wuhan, Hubei, China
摘要：
Aiming at the critical drawbacks of low sampling rate and less accuracy in Monte Carlo Localisation (MCL) algorithm, a novel mobile nodes localisation algorithm based on the hill climbing optimisation strategy is proposed, namely HCPSO-MCL (Hill Climbing Particle Swarm Optimisation-MCL). The HCPSO-MCL algorithm combines the hill climbing strategy and particle swarm optimisation to correct the location estimated by the MCL algorithm, which results in effective implementation and accurate positioning of the mobile nodes. The experimental results indicate that the HCPSO-MCL algorithm improves the positioning accuracy greatly compared to the MCL algorithm and that it has a faster position velocity than the PSO-MCL algorithm.
期刊：
ACM Transactions on the Web,2016年10(2):10:1-10:29 ISSN：1559-1131
通讯作者：
Wu, Wensheng
作者机构：
[Wu, Wensheng] Univ So Calif, Dept Comp Sci, Los Angeles, CA 90089 USA.;[Meng, Weiyi] SUNY Binghamton, Dept Comp Sci, Binghamton, NY 13902 USA.;[Su, Weifeng] BNU HKBU United Int Coll, Comp Sci & Technol Program, Zhuhai 519085, Peoples R China.;[Zhou, Guangyou] Cent China Normal Univ, Sch Comp Sci, 152 Luoyu Rd, Wuhan 430079, Peoples R China.;[Chiang, Yao-Yi] Univ So Calif, Spatial Sci Inst, Los Angeles, CA 90089 USA.
通讯机构：
[Wu, Wensheng] U;Univ So Calif, Dept Comp Sci, Los Angeles, CA 90089 USA.
作者机构：
[Tan, Liansheng; Wu, Mou] Cent China Normal Univ, Dept Comp Sci, Wuhan 430079, Peoples R China.;[Wu, Mou] Hubei Univ Sci & Technol, Sch Comp Sci & Technol, Xianning 437100, Peoples R China.
通讯机构：
[Tan, Liansheng] C;[Wu, Mou] H;Cent China Normal Univ, Dept Comp Sci, Wuhan 430079, Peoples R China.;Hubei Univ Sci & Technol, Sch Comp Sci & Technol, Xianning 437100, Peoples R China.
关键词：
Data reduction;wireless sensor network;hierarchical least mean square (HLMS) algorithm;adaptive filtering;energy conservation
摘要：
In wireless sensor networks (WSNs), due to the restriction of scarce energy, it remains an open challenge how to schedule the data communications between the sensor nodes and the sink to reduce power usage with the aim of maximizing the network lifetime. To face this challenge, this paper proposes a workable data communication scheme utilizing the hierarchical Least-Mean-Square (HLMS) adaptive filter. The HLMS predicting techniques are explored that predict the measured values both at the source and at the sink, sensor nodes are subsequently required only to send those readings that deviate from the prediction by an error budget. Such data reduction strategy achieves significant power savings by reducing the amount of data sent by each node. We discuss the working mechanism of HLMS in the purpose of data reduction in WSNs, analyze the mean-squared error in the two level HLMS, and design the interactive HLMS prediction algorithm implemented at sink and sensor node and the transmission protocol between them. To elaborate on our theoretical proposal, the HLMS algorithms and protocols are then evaluated by simulation. Simulation results show that our proposed scheme achieves major improvement in convergence speed compared with previous approaches, and achieves up to 95% communication reduction for the temperature measurements acquired at Intel Berkeley lab while maintaining a minimal accuracy of 0.3 degrees C.
