What does sorting by Relevance do in Gigs?

Summary: In Opportunity Marketplace, the sort by Relevance doesn't make sense, it is not sorting by the Gigs that are most "relevant".

Content (required):

When Opportunity Marketplace is filtered to show Gigs and the sort is by "Relevance", doesn't look like it's sorting in any way that makes sense. it's showing the latest created Gigs at the top, even if the skills/location are not matching my interests.

Does anyone know what is relevance sorting by?

Version (include the version you are using, if applicable): 23A

Code Snippet (add any code snippets that support your topic, if applicable):