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Displaying 1-11 out of 11 total
A Group Oriented Intelligent Tutoring System For Rocket Engineers and Researchers
Found in: 2012 IEEE 12th International Conference on Advanced Learning Technologies (ICALT)
By Yonghuang Zheng,Feng Tian,Renhou Li,Longzhuang Li
Issue Date:July 2012
pp. 20-22
An architecture of a group oriented intelligent tutoring system for rocket engineers and researchers is proposed, which combines the technologies of multi-agent and virtual reality with HLA. At the same time, a group oriented joint intention is introduced ...
Sentiment Classification in Turn-Level Interactive Chinese Texts of E-learning Applications
Found in: 2012 IEEE 12th International Conference on Advanced Learning Technologies (ICALT)
By Feng Tian,Huijun Liang,Longzhuang Li,Qinghua Zheng
Issue Date:July 2012
pp. 480-484
To solve the problem of emotional illiteracy in current e-Learning environment, researches on sentiment analysis now get more attentions. This paper focuses on recognizing emotion from interactive Chinese texts (ICTs). Through observation, firstly, charact...
Visualizing e-Learner Emotion, Topic, and Group Structure in Chinese Interactive Texts
Found in: Advanced Learning Technologies, IEEE International Conference on
By Feng Tian,Huisan Zhang,Longzhuang Li,Qinghua Zheng,Yang Yang
Issue Date:July 2011
pp. 587-589
To help teachers know class/group members better in the case of large scale on-line textual interaction, this paper tried to display e-Learner's emotion combined with topics and group structure. For achieving this goal, a color palette of emotions based on...
Data Integration for the Gulf of Mexico Satellite Observations
Found in: Internet and Web Applications and Services, International Conference on
By Longzhuang Li, Yonghuai Liu, Srujan Kothapally, Chuihui Jin, Anil Nalluri
Issue Date:May 2009
pp. 137-142
A number of satellite image sources on meteorology and environment are available over the Gulf of Mexico (GOM). Those satellite images are taken periodically in order to observe the weather changes. However, users usually face several problems when they wa...
Discontinuity-Based Simplification of Free Form Surface From a Range Image
Found in: Pattern Recognition, International Conference on
By Guoqiang Fei, Yonghuai Liu, Baogang Wei, Longzhuang Li
Issue Date:August 2006
pp. 13-16
This paper improves an existing method for more accurate simplification of free form surface represented as dense points. The main improvement lies in two aspects: one is the introduction of a novel transformation of curvatures, the other is to propose sam...
Evaluating Collinearity Constraint for Automatic Range Image Registration
Found in: 3D Digital Imaging and Modeling, International Conference on
By Yonghuai Liu, Longzhuang Li, Baogang Wei
Issue Date:June 2005
pp. 172-179
While most of the existing range image registration algorithms either have to extract and match structural (geometric or optical) features or have to estimate the motion parameters of interest from outliers corrupted point correspondence data for the elimi...
Free Form Shape Matching Using Deterministic Annealing and Softassign
Found in: Pattern Recognition, International Conference on
By Yonghuai Liu, Longzhuang Li, Ying Wang
Issue Date:August 2004
pp. 128-131
Free form shape matching is a fundamental problem in both the machine vision and pattern recognition literatures. However, the automatic approach to free form shape matching still remains open. In this paper, we improve an existing deterministic annealing ...
A General Method for Statistical Performance Evaluation
Found in: Hawaii International Conference on System Sciences
By Longzhuang Li, Yi Shang, Wei Zhang, Hongchi Shi
Issue Date:January 2003
pp. 108c
In the paper, we propose a general method for statistical performance evaluation. The method incorporates various statistical metrics and automatically selects an appropriate statistical metric according to the problem parameters. Empirically, We compare t...
A new statistical method for performance evaluation of search engines
Found in: Tools with Artificial Intelligence, IEEE International Conference on
By Longzhuang Li, Yi Shang
Issue Date:November 2000
pp. 0208
Abstract: We present a new statistical method for evaluating search engines' precision performance based on sample queries. The method consists of relevance evaluation and statistical comparison. In relevance evaluation, we present two scoring algorithms: ...
Optimization Design of Filter Banks in Subband Image Coding
Found in: Application-Specific Software Engineering and Technology, IEEE Workshop on
By Yi Shang, Longzhuang Li
Issue Date:March 1999
pp. 112
In this paper we present a new optimization-based method for designing filter banks in subband image coding. We formulate the design problem as a nonlinear optimization problem whose objective consists of both the performance metrics of the image coder, su...
Improvement of HITS-based algorithms on web documents
Found in: Proceedings of the eleventh international conference on World Wide Web (WWW '02)
By Longzhuang Li, Wei Zhang, Yi Shang
Issue Date:May 2002
pp. 527-535
In this paper, we present two ways to improve the precision of HITS-based algorithms on Web documents. First, by analyzing the limitations of current HITS-based algorithms, we propose a new weighted HITS-based method that assigns appropriate weights to in-...