Better hypothesis selection needed

[laoliu5280]

Our hypothesis generation shows promising results, but the hypothesis-based inference still faces several bottlenecks.

One possible improvement we can do to get better hypothesis selection.

In particular, if the model is able to pick the most relevant hypothesis from the top 5 generated hypotheses for each test example, we observe ~20% improvement in accuracies for the real datasets. This shows there are lots of room for improvement in the hypothesis selection part of hypothesis-baed inference.