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CSCW
1992
ACM
14 years 2 months ago
Groupware Experiences in Three-Dimensional Computer-Aided Design
A system that allows people to simultaneously modify a common design in a graphically rich environment was developed to identify and examine groupware interface issues unique to t...
Li Shu, Woodie Flowers
VMV
2001
92views Visualization» more  VMV 2001»
14 years 6 hour ago
Using Quaternions for Parametrizing 3-D Rotations in Unconstrained Nonlinear Optimization
In this paper we address the problem of using quaternions in unconstrained nonlinear optimization of 3-D rotations. Quaternions representing rotations have four elements but only ...
Jochen Schmidt, Heinrich Niemann
ICIP
2006
IEEE
15 years 9 days ago
Two-Stage Optimal Component Analysis
Linear techniques are widely used to reduce the dimension of image representation spaces in applications such as image indexing and object recognition. Optimal Component Analysis ...
Yiming Wu, Xiuwen Liu, Washington Mio, Kyle A. Gal...
GECCO
2008
Springer
155views Optimization» more  GECCO 2008»
13 years 11 months ago
Integrating user preferences with particle swarms for multi-objective optimization
This paper proposes a method to use reference points as preferences to guide a particle swarm algorithm to search towards preferred regions of the Pareto front. A decision maker c...
Upali K. Wickramasinghe, Xiaodong Li
ECIR
2009
Springer
14 years 7 months ago
Active Sampling for Rank Learning via Optimizing the Area under the ROC Curve
Abstract. Learning ranking functions is crucial for solving many problems, ranging from document retrieval to building recommendation systems based on an individual user’s prefer...
Pinar Donmez, Jaime G. Carbonell