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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Confusion matrix for Decision Tree multiclass classification, using the best feature set. The numbers in the axes mean 0 for Normal class, 1 for UDP class, 2 for TCP class, and 3 for HTTP class.