How Google Determines Sitelinks

[joshfialkoff-77863]

Does anyone have authoritative information on how Google determines which links to use as sitelinks?

I thought I saw that Top Landing Pages was a metric Google used (in part).

[Audiohype]

I think navigation probably plays a large part, as well as website structure. If you have clear navigation with obvious subcategories you are more likely to get these pages as sitelinks.

I have seen sites with no clear structure in the navigation have some strange pages picked for sitelinks - the pages were quite deep ones which kinda rules out PR or page strength.

I also know that Google needs to determine that these results will be useful to a users query, so that fits in there somehow.