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March 1, 1975IEEE Transactions on Computers407 citations

An Optimal Set of Discriminant Vectors

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DFDonald H. FoleyHanscom Air Force BaseJSJohn W. SammonHanscom Air Force Base

Key Points

  • Develop a feature extraction method for two-class pattern recognition that selects discriminant vectors directly optimized for class separability instead of data fitting.
  • Derived a mathematical formulation selecting discriminant vectors corresponding to the largest discrimination values.
  • Developed a recursive algorithm for computing sequential discriminant vectors.
  • Evaluated the framework against classical eigenvector-based fitting techniques using data-dependent and theoretical benchmarks.
  • The proposed approach prioritizes features that maximize separation between classes rather than fitting overall data variance.
  • The recursive method successfully extracts optimal discriminant vectors across both theoretical and empirical test cases.

Abstract

A new method for the extraction of features in a two-class pattern recognition problem is derived. The main advantage is that the method for selecting features is based entirely upon discrimination or separability as opposed to the more common approach of fitting. The classical example of fitting is the use of the eigenvectors of the lumped covariance matrix corresponding to the largest eigenvalues. In an analogous manner, the new technique selects discriminant vectors (or features) corresponding to the largest "discrim-values." The new method is compared to some of the more popular alternative techniques via both data-dependent and mathematical examples. In addition, a recursive method for obtaining the discriminant vectors is given.

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Cite This Study

Foley et al. (1975) studied this question.

synapsesocial.com/papers/6a0fe93c2badbc352afef056https://doi.org/10.1109/t-c.1975.224208
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