Question about the information gain function.

[johnnylu305]

Hi, thank you for the amazing work. After reading the paper, I have a few questions about the information gain function. In your work, you define it as the subtraction of the variance from prior to posterior (e.g., Equation[20][21]).

1. Have you tried to only use the variance of prior or the variance of posterior as the information gain function?

2. Is there any insight that you choose Equation[20][21] instead of the definition mentioned in 1?