According to me, it all started with rules and still today we are finding rules ONLY. All that changed is NUMBER of rules. With advancement in MACHINE LEARNING particularly DEEP LEARNING, we are now finding thousand or million of rules instead of previously 5-10 hand crafted rules.
I’m working on how to train DL systems on low resource datasets Robustly. Thus two borad reserach areas: training DL systems on low resource datasets and training Robust DL systems.
Furthermore, I’m an expert in Autoamtic speech recognition.