What is RankBrain in SEO??

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.

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[Stucorner]

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.