Machine learning with notification sound for assistance (6)
I believe the answer is:
aiding
'for assistance' is the definition.
(coming to someone's aid)
'machine learning with notification sound' is the wordplay.
'machine learning' becomes 'AI' (machine learning is a field in AI technology).
'with' means one lot of letters go next to another.
'notification sound' becomes 'ding' (eg a microwave).
'ai'+'ding'='AIDING'
(Other definitions for aiding that I've seen before include "Helping, supporting" , "Giving help" , "Assisting" , "Providing assistance" , "Poet Laureate with this helping" .)