Learning algorithms Deep learning 5 Convolution 4 Convolutional neural network 4 Performance 4 Constrained optimization 3 Data handling 3 Internet of things 3 Machine learning 3 Mean square error 3 Pattern recognition 3 Reinforcement learning 3 deep reinforcement learning 3 6G-IoT 2 6g-IoT 2 Acetone 2 Benchmarking 2 Commerce 2 Deep neural networks 2 Electronic nose 2 Energy 2 Energy harvesting 2 Forecasting 2 Gas detectors 2 Gas sensor arrays 2 Gas-sensors 2 Gases 2 Machine learning algorithms 2 Markov processes 2 Neural networks 2