Robot essay graders are as good as humans.

I worry what this says about the instructions given to human graders and to students writing essays. However, if developed further, this could be great news for teachers.

Strata Week: The rise of the robot essay graders – O'Reilly Radar

In this week's data news, a look at the performance of automated essay-grading software, scaling Instagram, and an audit of the UK government's open data initiative.