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Pattern Recognition and Machine Learning (Information Science and Statistics)
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Hierarchical classifier with overlapping class groups
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Hierarchical Rules for a Hierarchical Classifier
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Information Sciences: an International Journal
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HAIS'10 Proceedings of the 5th international conference on Hybrid Artificial Intelligence Systems - Volume Part I
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We describe the Hierarchical Classifier (HC), which is a hybrid architecture [1] built with the help of supervised training and unsupervised problem clustering. We prove a theorem giving the estimation R of HC risk. The proof works because of an improved way of computing cluster weights, introduced in this paper. Experiments show that R is correlated with HC real error. This allows us to use R as the approximation of HC risk without evaluating HC subclusters. We also show how R can be used in efficient clustering algorithms by comparing HC architectures with different methods of clustering.