Multiple discriminant analysis
Multiple Discriminant Analysis (MDA) is a method for compressing a multivariate signal to yield a lower-dimensional signal amenable to classification.
MDA is not directly used to perform classification. It merely supports classification by yielding a compressed signal amenable to classification. The method described in Duda et al. (2001) §3.8.3 projects the multivariate signal down to an M−1 dimensional space where M is the number of categories.
MDA is useful because most classifiers are strongly affected by the curse of dimensionality. In other words, when signals are represented in very-high-dimensional spaces, the classifier's performance is catastrophically impaired by the overfitting problem. This problem is reduced by compressing the signal down to a lower-dimensional space as MDA does.
- Duda R, Hart P, Stork D (2001) Pattern Classification, Second Edition. New York, NY, USA: John Wiley and Sons.
- Lin L et al. (2005) Identification of network-level coding units for real-time representation of episodic experiences in the hippocampus. PNAS 102(17):6125-6130.
- Lin L, Osan R, and Tsien JZ (2006) Organizing principles of real-time memory encoding: neural clique assemblies and universal neural codes. TRENDS in Neurosciences 29(1):48-57.
|This robotics-related article is a stub. You can help Wikipedia by expanding it.|
|This statistics-related article is a stub. You can help Wikipedia by expanding it.|