How to handle short sentences/contexts

[raman-r-4978]

Hi @seominjoon @jhyuklee

• The default model performs well for SQUAD_v1.1 dataset (where context length is ~700 chars)
  But It fails to perform, when I try to index my custom data which has small paragraph/contexts (length ~100-150 characters).
  • The problem is, irrespective of the query, the same result (wrong) is being returned as the output
  • Most the time, the result is just single random character like ? . (end of the context)
  • I have debugged into this and realized that the problem stays in start vectors which we generate from model output

Ques:

1. May I know why this scenario occurs?
2. What is the solution?

Setting:
All the results are obtained using the commands mentioned in README.

[jhyuklee]

Reference: #2