RankBrain is an Artificial Intelligence program used to help process Google search queries.
Rank Brain is a machine learning technique which helps google to monitor search result and show results on search engine.
RankBrain is a component of Google's core algorithm which uses machine learning (the ability of machines to teach themselves from data inputs) to determine the most relevant results to search engine queries.
RankBrain is a machine learning (AI) algorithm that Google uses to sort the search results. It also helps Google process and understand search queries.