# Sims Expansion Candidate Source
provides similar accounts based on the Sims algorithm for a given set of accounts.

This is a 2nd-hop expansion, meaning that the input accounts could be a user's recently engaged, followed, or algorithm-generated (such as RealGraph) accounts.

For more information on Sims and how it is utilized in the Follow Recommendations Service, please refer to the `follow-recommendations-service/common/src/main/scala/com/twitter/follow_recommendations/common/candidate_sources/sims/README.md` file.
