How Top User Expertise Is Calculated¶
Alation Cloud Service Applies to Alation Cloud Service instances of Alation
Customer Managed Applies to customer-managed instances of Alation
Alation calculates top user expertise for a data object based on several factors:
Number of the user’s queries that mention the data object;
Number of times the user added comments, titles, or descriptions to the data object page;
Nomination by other users.
Each user has a Catalog page where their expertise is listed, along with the Catalog objects they are connected to and the queries they have written.

Upvoting and Downvoting Top Users¶
On schema and table Catalog pages, Alation automatically lists Top Users.
To upvote or downvote a Top User, the user must already be listed as an expert.
