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Title: Discriminant simplex analysis
Authors: Fu, Y.
Yan, S. 
Huang, T.S.
Keywords: Discriminant simplex analysis
Graph embedding
k-nearest-neighbor simplex
Subspace learning
Issue Date: 2008
Citation: Fu, Y.,Yan, S.,Huang, T.S. (2008). Discriminant simplex analysis. ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings : 3333-3336. ScholarBank@NUS Repository.
Abstract: Image representation and distance metric are both significant for learning-based visual classification. This paper presents the concept of κ-Nearest-Neighbor Simplex (κNNS), which is a simplex with the vertices as the κ nearest neighbors of a certain point. κNNS contributes to the image classification problem in two aspects. First, a novel distance metric between a point to its κNNS within a certain class is provided for general classification problem. Second, we develop a new subspace learning algorithm, called Discriminant Simplex Analysis (DSA), to pursue effective feature representation for image classification. In DSA, the within-locality and between-locality are both modeled by κNNS distance, which provides a more accurate and robust measurement of the probability of a point belonging to a certain class. Experiments on real-world image classification demonstrate the effectiveness of both DSA as well as κNNS based classification approach. ©2008 IEEE.
Source Title: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
ISBN: 1424414849
ISSN: 15206149
DOI: 10.1109/ICASSP.2008.4518364
Appears in Collections:Staff Publications

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