Improve span prediction on EDS

[alexanderkoller]

If EDM is used in the mtool evaluation, figure out a way to predict the spans better.

[namednil]

Well, the Anchoring F-score holds us down anyway.
I thought we could add two columns to amconll that indicate where for every word, the span which it induces begins and where it ends.
I was thinking of a simple tagging approach, like the relative-POS-based encoding in this paper: https://www.aclweb.org/anthology/N19-1077
(which I find interesting that this works so well!).

[alexanderkoller]

I was thinking about training an NN to predict spans too. In what way would the relative-POS-based encoding solve our problem?

Whatever we do, it should be a simple solution, otherwise we won't be finished in time.

[namednil]

In the paper, this "pointer" encodes where to find the head, in our case, we would use two pointers: one pointing at the token where the span begins, and one where the span ends.
Not sure, whether I understood your question.

Yes, I think this is the simplest way of using a NN in this case. What did you think about?