Exercise 2b is out, and a solution for 2a

Simen will walk you through a sample solution to exercise 2a at the group session today.

Note that we will continue to build on and extend the vector space functionality from exercise 2a when we now move on to exercise 2b where we will implement a Rocchio classifier. You can then either start from the provided solution or you can continue on with your own code. The deadline is Thursday Oct. 17th.