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\section{Compressed sensing} sensing and atomistic simulations}  In order to obtain frequency resolved quantities from real-time methods like molecular dynamics or electron dynamics, it is necessary to perfom an spectral representation of the time-resolved signal. This is a standard operation that is usually performed using a discrete Fourier transform. Since the resolution of the spectrum is given by the length of the time signal, it is interesting to look for more methods that can provide us a spectrum of similar quality with shorter time-resolved signals, as this is directly reflected in shorter computation times.  Several such methods exists, but a particular one that we have been exploring due to its general applicability and efficiency is compressed sensing.