It does not use karma at all, only comments and the context of said comments. Basically, it ingests comments and from that identifies experts, creates a search graph, etc.
The accuracy would be higher, but there are limited number of comments on HN.
The accuracy would be higher, but there are limited number of comments on HN.
Could you elaborate on that?
If you try "postgresql" or something, there are enough people who have discussed it to provide good results. If you type "hnprofile", likely only these comments will show up.