It seems that the whole AI field was started four or five years ago but actually it's several decades old. A recent example: for how long did Amazon use recomme

It seems that the whole AI field was started four or five years ago but actually it's several decades old. A recent example: for how long did Amazon use recommendation systems? And data mining was called OLAP [1] in the 90s and probably with another name in the 60s. [1] https://en.wikipedia.org/wiki/Online_analytical_processing https://en.wikipedia.org/wiki/Online_analytical_processing