Classification (of information) Speech recognition (2-nitrophenyl)ethyl chromophore (6-bromo-7-hydroxycoumarin-4-yl)methyl chromophore 2-nitrobenzyl chromophore Class-based Classification approach Classification models Computers Convolution Convolution neural network Convolutional neural networks Data augmentation Data set Deep neural networks Emotions Feature extraction Features sets Gender identification Gender recognition HNO donor HNO trapping Human computer interaction Human computer interfaces Human relationships Humans Interface applications Language Language independents Laser flash photolysis