INCREASING ACCURACY THROUGH CLASS DETECTION: ENSEMBLE CREATION USING OPTIMIZED BINARY KNN CLASSIFIERS
International Journal of Computer Science, Engineering and Applications (IJCSEA), 01 (02):
11 (April 2011)DOI: 10.5121/ijcsea.2011.1201
Abstract
Classifier ensembles have been used successfully to improve accuracy rates of the underlying classification mechanisms. Through the use of aggregated classifications, it becomes possible to achieve lower error rates in classification than by using a single classifier instance. Ensembles are most often used with collections of decision trees or neural networks owing to their higher rates of error when used individually. In this paper, we will consider a unique implementation of a classifier ensemble which utilizes kNN classifiers. Each classifier is tailored to detecting membership in a specific class using a best subset selection process for variables. This provides the diversity needed to successfully implement an ensemble. An aggregating mechanism for determining the final classification from the ensemble is presented and tested against several well known datasets.