Classification
The first thing the search engines do with incoming queries is the classification. The process helps search engines know about the action they need to take with the queries. The basic task done in the classification process is the labeling of queries. The labels may include:
•YMYL
•Local
•Unseen
•Adult
•Question
There are so many kinds of classification to talk about in this regard but above information should be enough for you to understand the basic concept.
Context
Weight
If you have been hearing about RankBrain, you need to know that this step basically involves it. Before search engines rank the pages against a query, they need to determine the types of ranking signals that are most important in the case. For instance, when you search ‘Civil War’ in Google, you are going to get something related to the history of Civil War unless you attach the parameters to define what exactly you are looking for. Similarly, if you search something which primarily belongs to the recent years but it had also been the story of the past, you may get the results based on the recent happening.