Base matrix Codes (symbols) Coefficient matrix Convolution Convolutional neural network Convolutional neural networks Error correction Information exchanges Internet of things Iterative methods Matrix algebra Matrix factorization Network coding Nonnegative Matrix Factorization Nonnegative matrix factorization Open source software Open systems Optical resolving power Quick response code Regularisation Secret-sharing Structural regularization Superresolution basis matrix coefficient matrix convolutional neural network quick response code secret sharing structural regularization super resolution