This appears to be the same paper as in your first link. It was a draft at the time and now appears to have made it to a conference presentation. Edit: In fact

This appears to be the same paper as in your first link. It was a draft at the time and now appears to have made it to a conference presentation. Edit: In fact the conference was in May so about six months after the first story based on the draft version. Not quite sure why it's hitting HN front page now