We should show newer posts more frequent compared to old posts (discovery)
If we have 2 posts about the same topic we should show the newer one above the older one (more likely user will be interested in up to date informations).
Idea is to multiply embedding by linear function (the closer post is to the current date the bigger multiplier will be - for example post from yesterday will have sth like 0.99 multiplier when post from 5 years ago will have like 0.3 multiplier).
Discovery and testing on the method needs to be performed and if it fails the look for some alternatives