Seriously? A narrow category of problems?
ML has been used and is being used to significantly advance image processing, video processing, image classification, speech-to-text, natural language understanding, medical imaging interpretation, medical notes and differential diagnosis, warehouse management, shipping and delivery, transportation, networking, agriculture, biomedical research, insurance, law practice (document scanning), journalism, politics (through better polling, targeting, gerrymandering, whatever), probably other things I'm missing.
ML has been used and is being used to significantly advance image processing, video processing, image classification, speech-to-text, natural language understanding, medical imaging interpretation, medical notes and differential diagnosis, warehouse management, shipping and delivery, transportation, networking, agriculture, biomedical research, insurance, law practice (document scanning), journalism, politics (through better polling, targeting, gerrymandering, whatever), probably other things I'm missing.