Investigate model improvement using word movers distance

[de-code]

In the word movers distance, 'keywords' are compared using their similarity.
For the actual keywords that may not have as much value if they are well defined.
But it could improve performance when comparing for example the abstract.
One challenge with the word movers distance is that it will be more costly to calculate.

http://jxieeducation.com/2016-06-13/Document-Similarity-With-Word-Movers-Distance/