Abstract
In this paper new learning structures, similarity between classes based trees and directed acyclic graph, are presented. The proposed structures are based on a distribution of recognized classes in a data space, unlike the known graph methods such as the tree based One–Against–All (OAA) algorithm or the directed acyclic graph based One–Against–One (OAO) algorithm. The structures are created by grouping similar classes. The similarity between classes is estimated by a distance between classes. The OAO strategy is implemented only for the nearest classes. In other cases the OAA strategy is used. This method allows reduction of the classification costs without a significant growth of the classification error.
Algorithms, which create similarity based trees and directed acyclic graph are presented in this paper. These methods are also compared in digits recognition task with existing ones.
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Luckner, M. (2011). Multiclass SVM Classification Using Graphs Calibrated by Similarity between Classes. In: König, A., Dengel, A., Hinkelmann, K., Kise, K., Howlett, R.J., Jain, L.C. (eds) Knowledge-Based and Intelligent Information and Engineering Systems. KES 2011. Lecture Notes in Computer Science(), vol 6884. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-23866-6_46
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DOI: https://doi.org/10.1007/978-3-642-23866-6_46
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