Clarification is needed in several places.
1. In section 3, in addition to the description of the previous model, MH, you need point out the issues of MH which motivate you to propose a new model.
2. In section 4, I don't see the reason why separators are introduced. what additional info they convene beyond T/I/O?
3. section 5.1 does not seem to provide useful info regarding why the new model is superior.
4. the discussion in section 5.2 is so abstract that I don't get the insights why the new model is better than MH. can you provide examples of spurious structures? - General Discussion: The paper presents a new model for detecting overlapping entities in text. The new model improves the previous state-of-the-art, MH, in the experiments on a few benchmark datasets. But it is not clear why and how the new model works better.
4. the discussion in section 5.2 is so abstract that I don't get the insights why the new model is better than MH. can you provide examples of spurious structures?