1. A non-transitory machine-readable medium 1 storing a program executable by at least one processing unit of a device, the program comprising sets of instructions for: receiving a set of audio files, each audio file in the set of audio files comprising audio from an audio call; truncating each audio file in the set of audio files to a defined call length; for each audio call in the set of audio calls, receiving a transcript of the audio call based on the truncated audio file of the audio call; and for each audio call in the set of audio calls, using the transcript of the audio call as input to a machine learning model for the machine learning model to predict a category from a plurality of categories that is associated with the audio call.
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