#28 Document the Owkin algorithm

[WGierke]

I added an initial documentation of the Owkin algorithm. The algorithm scored 10th place during the DSB 2017.

Unfortunately, there is no technical report or blog post about the approach so far.
Thus, I had to derive the algorithm design from the source code and black-box models only, which resulted in a shorter documentation than for other algorithms.

Reference to official issue

This pull request addresses #28

Motivation and Context

At some point we need to implement an algorithm that can segment the nodules and detect whether they are malicious or not. It makes sense to first evaluate the top 10 solutions for the Data Science Bowl 2017 regarding how performant they are and how easy it would be to use them in our application.

CLA

• I have signed the CLA; if other committers are in the commit history, they have signed the CLA as well

[lamby]

Thanks!