Difference in difference is a statistical technique used in observational studies. It can provide insight – but don't be fooled by numbers and p-values into believing it is necessarily true. My ...

Remember Facebook's "come and see what we're building" event? Yeah, that's today. And the first thing that CEO Mark Zuckerberg unveiled was a new feature called Graph Search. It essentially will give ...

Google today launched the Knowledge Graph, a new search engine feature that helps users quickly find relevant information using semantic search technology. Now, when a user conducts a search, Google ...