Abstract
We propose an improved subclass discriminant analysis based on the mixed weighted Mahalanobis distance, with the aim of resolving the classification problem that samples are multi-subclass distributed and the computed vectors are sub-optimal. There are three contributions in this paper. First, we used some theoretical support to improve the traditional discriminant criterion function in subclass discriminant analysis. Second, we propose a new distance measure called the mixed weighted Mahalanobis distance (MWMD), which considers the influence of the sample size and sample scatter. Finally, inspired by approximate weighted linear discriminant analysis, we applied MWMD to the improved criterion function. Our experimental results confirmed that the proposed method has a better classification performance than other discriminant analysis methods, using an artificial dataset and some benchmark databases.
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Acknowledgments
This work was supported by grants from Jilin Planned Projects for Science Technology Development (Grant Nos. 20120305 and 20130522119JH).
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The authors declare that there are no conflicts of interest regarding the publication of this article.
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Wang, Y., Ni, H., Liu, P. et al. Improved SDA based on mixed weighted Mahalanobis distance. SIViP 10, 65–74 (2016). https://doi.org/10.1007/s11760-014-0703-y
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DOI: https://doi.org/10.1007/s11760-014-0703-y