Artificial intelligence is no longer the stuff of the future. It is becoming an increasingly common part of our everyday lives, from the watches we wear that monitor our heart rate to the robots that vacuum our floors without any direction from us. Yet we have traditionally thought of artificial intelligence as similar to a robot that has a mind of its own and can act independently. While these robots would certainly qualify, they are not the only examples.
There are actually three types of artificial intelligence:
Google — the leader in almost all things Internet-related — has introduced RankBrain, which is a machine learning algorithm. It is an example of ANI, just like the spam filters in your email or the “recommended products” feature on Amazon.
Source – http://www.business2community.com/seo/artificial-intelligence-making-mark-seo-01587969