15. The non-transitory computer-readable storage medium of claim 13 , further comprising program code to, during the runtime: determine a path of the neural network during the speech recognition processing, the path having a weight; perform the speech recognition processing on the audio signal using the path to determine the speech recognition results, the speech recognition results comprising a confidence score; update the neural network by adjusting the weight using the confidence score to obtain an adjusted weight; receive a second audio signal; and perform second speech recognition processing on the second audio signal using the adjusted weight.
15. The non-transitory computer-readable storage medium of claim 13 , further comprising program code to, during the runtime: determine a path of the neural network during the speech recognition processing, the path having a weight; perform the speech recognition processing on the audio signal using the path to determine the speech recognition results, the speech recognition results comprising a confidence score; update the neural network by adjusting the weight using the confidence score to obtain an adjusted weight; receive a second audio signal; and perform second speech recognition processing on the second audio signal using the adjusted weight. 16. The non-transitory computer-readable storage medium of claim 15 , wherein the speech recognition results comprise a lattice, wherein the confidence score is associated with a path of the lattice.