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Displaying 1-34 out of 34 total
Classified quadtree-based adaptive loop filter
Found in: Multimedia and Expo, IEEE International Conference on
By Qian Chen, Yunfei Zheng, Peng Yin, Xiaoan Lu,Joel Sole, Qian Xu,Edouard Francois, Dapeng Wu
Issue Date:July 2011
pp. 1-6
In this paper, we propose a classified quadtree-based adaptive loop filter (CQALF) in video coding. Pixels in a picture are classified into two categories by considering the impact of the deblocking filter, the pixels that are modified and the pixels that ...
 
Adaptively Weighted 2DPCA Based on Local Feature for Face Recognition
Found in: International Conference on Natural Computation
By Qian Xu, Wei Deng
Issue Date:October 2008
pp. 76-79
Two dimensional principal component analysis (2DPCA) extracts the global feature of human face, but the local feature is very important to face recognition. In this paper, adaptively weighted 2DPCA based on local feature is proposed. It combines above appr...
 
Video Volume Segmentation for Event Detection
Found in: Computer Graphics, Imaging and Visualization, International Conference on
By Jing Wang, Zhijie Xu, Qian Xu
Issue Date:August 2009
pp. 311-316
Video processing for surveillance and security applications has become a research hotspot in the last decade. This paper reports a research into volume-based segmentation techniques for video event detection. It starts with an introduction of the structure...
 
SMS Spam Detection Using Noncontent Features
Found in: IEEE Intelligent Systems
By Qian Xu,Evan Wei Xiang,Qiang Yang,Jiachun Du,Jieping Zhong
Issue Date:November 2012
pp. 44-51
Short Message Service text messages are indispensable, but they face a serious problem from spamming. This service-side solution uses graph data mining to distinguish spammers from nonspammers and detect spam without checking a message's contents.
 
Combining labeled and unlabeled data for biomédical event extraction
Found in: 2012 IEEE International Conference on Bioinformatics and Biomedicine Workshops (BIBMW)
By Jian Wang,Qian Xu,Hongfei Lin,Zhihao Yang,Yanpeng Li
Issue Date:October 2012
pp. 594-601
In biomédical event extraction domain, there is a small amount of labeled data along with a large pool of unlabeled data. Many supervised learning algorithms for bio-event extraction have been affected by the data sparseness. In this paper, we present a ne...
 
A Transfer Learning Algorithm for Document Categorization Based on Clustering
Found in: Computer Science and Electronics Engineering, International Conference on
By Wei Sun,Qian Xu
Issue Date:March 2012
pp. 528-531
Traditional machine learning and data mining have achieved significant success in many knowledge engineering areas including classification, regression clustering and so on, but a major assumption in them is that the training and test data must be in the s...
 
Low-Input High-Output Synchronous Rectification Boost DC-DC Simulation Based on MOSFET Model Scaling Down to 22nm
Found in: Information Technology, Computer Engineering and Management Sciences, International Conference of
By Xiaoyang Huang,Wenshi Li,Qi'an Xu,Yaotian Li
Issue Date:September 2011
pp. 22-25
Aiming at tree electricity generation key technology, an ideal synchronous rectification structure boost converter is focused on training important variables in sequence of (1) output load R=20O, (2) C and L, (3) especially switch-on RN and RP, (4) W/L, an...
 
Evaluation of in vivo Microcirculation via Orthogonal Polarization Multi-spectral Imaging and Multi-spectral Fusion
Found in: Information Technology, Computer Engineering and Management Sciences, International Conference of
By Qian Xu,Junfeng Lei,Libo Zeng
Issue Date:September 2011
pp. 164-168
Evaluation of in vivo microcirculation via the orthogonal polarization multi-spectral imaging and multi-spectral fusion is presented. The orthogonal polarization multi-spectral imaging technique is achieved by combination of the orthogonal polarization spe...
 
Short-Term Prediction of Coalmine Gas Concentration Based on Chaotic Series and Wavelet Neural Network
Found in: Artificial Intelligence and Computational Intelligence, International Conference on
By Zhao-Jinhui Qian-Xu, Wang Xuehui, Zhao Jinhui
Issue Date:October 2010
pp. 240-244
Coalmine gas concentration is a very complicated nonlinear dynamical system, which has obvious characteristics of chaos. Accurate prediction of coalmine gas concentration is very important to direct security production. However, data, got from in-wells, us...
 
The Three-Dimensional Imaging Based on Mean Shift Algorithm
Found in: Information Science and Management Engineering, International Conference of
By Limei Wang, Jianwen Wang, Bin Liu, Qian Xu
Issue Date:August 2010
pp. 506-509
The paper presents the surface clustering algorithm to remove the noise points of point cloud data for the three-dimensional imaging. The mean shift algorithm makes each sampling point to shift to the local maximum value of the kernel density function, and...
 
Multitask Learning for Protein Subcellular Location Prediction
Found in: IEEE/ACM Transactions on Computational Biology and Bioinformatics
By Qian Xu, Sinno Jialin Pan, Hannah Hong Xue, Qiang Yang
Issue Date:May 2011
pp. 748-759
Protein subcellular localization is concerned with predicting the location of a protein within a cell using computational methods. The location information can indicate key functionalities of proteins. Thus, accurate prediction of subcellular localizations...
 
The Research of Complex BP Neural Network PID Control
Found in: Artificial Intelligence and Computational Intelligence, International Conference on
By Yang Xue, Jian-hua Ye, Hong Qian, Xu-hong Yang
Issue Date:November 2009
pp. 55-58
In this paper, a new kind of intelligent PID control method based on BP neural network is presented and a complex neural network PID controller is designed. The NN controller has strong self-adaptability and self-learning abilities. Experimental results on...
 
A Novel Application of Variable Fuzzy Set on Alarming of Coalmine Gas
Found in: Environmental Science and Information Application Technology, International Conference on
By Zhao Jinhui, Li Mingliang, Qian Xu, Jia Lijuan
Issue Date:July 2009
pp. 40-43
A novel alarming assessment model of coalmine gas is presented in this paper. Based on the information fusion technique of multi-sensor, we introduce the thought of variable fuzzy set to assess complicated and risk coalmine gas. Through information fusion ...
 
Computer-Aided Detection Based on Fuzzy Support Vector Machines
Found in: Computational Intelligence and Design, International Symposium on
By Bai Xingli, Qian Xu
Issue Date:October 2008
pp. 202-206
The paper present a novel method for??Medical image Detection using fuzzy support vector machines. Through calculating fuzzy membership of every sample, the conception of fuzzy support vector machine (FSVM) is introduced, which can resolve the problem of u...
 
Wrapper-Based DWT-GMM for Image Segmentation
Found in: Intelligent Pervasive Computing, International Conference on
By Liu Qian, Xu Gang
Issue Date:October 2007
pp. 423-426
The paper describes a wrapper approach that applies Gauss mixture model into image segmentation, solving the problems of slow segmentation speed, fuzzy contour of the object of interest. By wrapping the feature selection algorithm inside the classifier, i....
 
Modeling of Artificial Life Based Virtual Fish Behavior
Found in: International Conference on Artificial Reality and Telexistence
By Xiaolin Quan, Shaochun Zhong, Wenyong Wang, Qian Xu, Ying Liang, Qingrong Zhang
Issue Date:December 2006
pp. 213-216
Conventional virtual biology behavior cartoon has some shortages because that it is realized by means of key frames technology. We proposed a virtual biology behavior model based on artificial life method. Giving an example of virtual fish, we have realize...
 
Virtual Clone Fish Experiment
Found in: International Conference on Artificial Reality and Telexistence
By Qian Xu, Wen-Yong Wang, Shao-Chun Zhong, Xiao-Lin Quan, Qingrong Zhang, Ying Liang
Issue Date:December 2006
pp. 646-650
A virtual clone fish experimental system is designed and set up. The system simulates the clone fish experiment process using the technique of virtual reality based on behavior model. Through the experiment, users can further observe the results and make c...
 
On Cooperative Inter-Domain Path Computation
Found in: Computers and Communications, IEEE Symposium on
By Payam Torab, Bijan Jabbari, Qian Xu, Shujia Gong, Xi Yang, Tom Lehman, Chris Tracy, Jerry Sobieski
Issue Date:June 2006
pp. 511-518
Inter-domain path computation, or the ability to compute end-to-end paths across multiple domains, is the next step toward wide deployment of a distributed control plane with support for traffic engineering. A key enabler to achieve this goal is the introd...
 
Distributed Joint Source-Channel Coding of Video Using Raptor Codes
Found in: Data Compression Conference
By Qian Xu, Vladimir Stankovic, Zixiang Xiong
Issue Date:March 2005
pp. 491-491
No summary available.
   
A New Approach to GPS Carrier Phase Ambiguity Resolution Using Single Epoch Single Frequency Data
Found in: Optoelectronics and Image Processing, International Conference on
By Fan Qian, Xu Chengquan, Zhang Ning
Issue Date:November 2010
pp. 51-54
The fast ambiguity resolution method, especially that using single epoch single frequency data, has been a challenging issue in the kinematic GPS positioning. In this paper, artificial immune algorithm (AIA) was introduced to search GPS carrier phase integ...
 
Visualization Model of Virtual Plant Growth and its Application
Found in: International Conference on Artificial Reality and Telexistence
By Qingrong Zhang, Wenyong Wang, Shaochun Zhong, Ying Liang, Qian Xu, Xiaolin Quan
Issue Date:December 2006
pp. 217-220
The virtual plant is a research area which develops rapidly along with the development of computer simulation technology, it has become the research hot spot in computer graphics, agriculture information technology and virtual teaching. In the paper, we ap...
 
Early prediction on imbalanced multivariate time series
Found in: Proceedings of the 22nd ACM international conference on Conference on information & knowledge management (CIKM '13)
By Guoliang He, Tieyun Qian, Xu Chen, Yong Duan
Issue Date:October 2013
pp. 1889-1892
Multivariate time series (MTS) classification is an important topic in time series data mining, and lots of efficient models and techniques have been introduced to cope with it. However, early classification on imbalanced MTS data largely remains an open p...
     
Designing engagement-aware agents for multiparty conversations
Found in: Proceedings of the SIGCHI Conference on Human Factors in Computing Systems (CHI '13)
By Gang Wang, Liyuan Li, Qianli Xu
Issue Date:April 2013
pp. 2233-2242
Recognizing users' engagement state and intentions is a pressing task for computational agents to facilitate fluid conversations in situated interactions. We investigate how to quantitatively evaluate high-level user engagement and intentions based on low-...
     
Attention-based addressee selection for service and social robots to interact with multiple persons
Found in: Proceedings of the Workshop at SIGGRAPH Asia (WASA '12)
By Liyuan Li, Qianli Xu, Yeow Kee Tan
Issue Date:November 2012
pp. 131-136
For robots to perform interaction with multiple persons, they have to be able to identify the addressees to interact with. We classify the methods of addressee detection and selection into two categories, namely, passive and active approaches. For passive ...
     
Compression-aware I/O performance analysis for big data clustering
Found in: Proceedings of the 1st International Workshop on Big Data, Streams and Heterogeneous Source Mining: Algorithms, Systems, Programming Models and Applications (BigMine '12)
By Geng Shen, Jianhui Li, Jing Shao, Qian Xu, Yang Zhang, Zhenghua Xue
Issue Date:August 2012
pp. 45-52
As the data volume increases, I/O bottleneck has become a great challenge for data analysis. Data compression can alleviate the bottleneck effectively. Taking K-means algorithm as an example, this paper proposes a compression-aware performance improvement ...
     
Effect of scenario media on human-robot interaction evaluation
Found in: Proceedings of the seventh annual ACM/IEEE international conference on Human-Robot Interaction (HRI '12)
By Taezoon Park, Benedict Tiong Chee Tay, Jamie Suat Ling Ng, Ji Bin Wong, Odelia Yiling Tan, Qianli Xu, Yian Ling Cheong
Issue Date:March 2012
pp. 275-276
Different media used to present the human-robot interaction (HRI) scenarios may affect users' perception of a robot in the user studies. We investigated how different scenario media (text, video, and live interaction) might influence user evaluation of soc...
     
Multitask Learning for Protein Subcellular Location Prediction
Found in: IEEE/ACM Transactions on Computational Biology and Bioinformatics (TCBB)
By Hannah Hong Xue, Qian Xu, Qiang Yang, Sinno Jialin Pan
Issue Date:May 2011
pp. 748-759
Protein subcellular localization is concerned with predicting the location of a protein within a cell using computational methods. The location information can indicate key functionalities of proteins. Thus, accurate prediction of subcellular localizations...
     
Beyond pointing and clicking: how do newer interaction modalities affect user engagement?
Found in: Proceedings of the 2011 annual conference extended abstracts on Human factors in computing systems (CHI EA '11)
By Haiyan Jia, Jeeyun Oh, Qian Xu, S. Shyam Sundar, Saraswathi Bellur
Issue Date:May 2011
pp. 1477-1482
Modern interfaces offer users a wider range of interaction modalities beyond pointing and clicking, such as dragging, sliding, zooming, and flipping through images. But, do they offer any distinct psychological advantages? We address this question with an ...
     
Modality is the message: interactivity effects on perception and engagement
Found in: Proceedings of the 28th of the international conference extended abstracts on Human factors in computing systems (CHI EA '10)
By Haiyan Jia, Jeeyun Oh, Qian Xu, S. Shyam Sundar, Saraswathi Bellur
Issue Date:April 2010
pp. 4105-4110
New media interfaces offer a wide variety of modalities for interacting with systems. While typing and clicking remain the staple of most interfaces, several other modalities have emerged in recent years, enabling users to perform a range of other actions,...
     
Designing interactivity in media interfaces: a communications perspective
Found in: Proceedings of the 28th international conference on Human factors in computing systems (CHI '10)
By Qian Xu, S. Shyam Sundar, Saraswathi Bellur
Issue Date:April 2010
pp. 2247-2256
Interactivity has become ubiquitous in the digital media landscape. Numerous interactive tools are designed, tested, deployed and evaluated. Yet, we do not have generalizable knowledge about the larger concept of interactivity and its psychological impact ...
     
Authority vs. peer: how interface cues influence users
Found in: Proceedings of the 27th international conference extended abstracts on Human factors in computing systems (CHI EA '09)
By Anne Oeldorf-Hirsch, Qian Xu, S. Shyam Sundar
Issue Date:April 2009
pp. 1-4
From the most e-mailed stories of the day to the most favorite stocks of the week, Web interfaces are rife with cues conveying other users' ratings and reviews of products and services. Do these peer opinions indeed affect our decisions? And if so, are the...
     
The bandwagon effect of collaborative filtering technology
Found in: CHI '08 extended abstracts on Human factors in computing systems (CHI '08)
By Anne Oeldorf-Hirsch, Qian Xu, S. Shyam Sundar
Issue Date:April 2008
pp. 49-54
Advancements in collaborative filtering and related technologies have resulted in the ubiquitous presence of other users' opinions and actions on a variety of Websites and portals, ranging from news to music to photo sites. But, do these cues about others'...
     
Low Permeability Gas Reservoirs Single Well Fracturing Fracture Optimization Research
Found in: Computational and Information Sciences, International Conference on
By Zi-tian Wang,Jun Chen,Feng Chen,Sha Jia,Zhao-yang Xu,Li-qian Xu
Issue Date:October 2011
pp. 567-570
There are a lot of low permeability gas reservoirs in China. Generally, these reservoirs have low porosity and permeability characteristics. While, stabling and increasing oil and gas production in the future greatly depends on the development of these res...
 
The Necessary Condition of Families of Odd-Periodic Perfect Complementary Sequence Pairs
Found in: Computational Intelligence and Security, International Conference on
By Hui-long Jin, Guo-dong Liang, Zhi-Hua Liu, Cheng-qian Xu
Issue Date:December 2009
pp. 303-307
The theory of families of odd-periodic perfect complementary sequence pairs(OPCSPF) is given. OPCSPF can be derived from the odd-perfect almost binary sequence and sequence pairs. Some characteristics of OPCSPF are discussed. The Fourier spectrum character...
 
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