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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/).
Graphical user interface used for subjective evaluation (a) random training samples of each class, which are shown to user during subjective evaluation, (b) interface showing all the testing data samples to user one by one for subjective class prediction.