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Pattern Recognition System Combining KNN rules and New Feature Weighting algorithm  

Lee Hee-Sung (School of Electrical and Electronic Eng., Yonsei Univ.)
Kim Euntai (School of Electrical and Electronic Eng., Yonsei Univ.)
Kim Dongyeon (School of Electrical and Electronic Eng., Yonsei Univ.)
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Abstract
This paper proposes a new pattern recognition system combining the new adaptive feature weighting based on the genetic algorithm and the modified KNN(K Nearest-Neighbor) rules. The new feature weighting proposed herein avoids the overfitting and finds the Proper feature weighting value by determining the middle value of weights using GA. New GA operators are introduced to obtain the high performance of the system. Moreover, a class dependent feature weighting strategy is employed. Whilst the classical methods use the same feature space for all classes, the Proposed method uses a different feature space for each class. The KNN rule is modified to estimate the class of test pattern using adaptive feature space. Experiments were performed with the unconstrained handwritten numeral database of Concordia University in Canada to show the performance of the proposed method.
Keywords
pattern recognition; KNN rules; GA; feature weighting;
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