formula (8) need clearly explaination

[Schrodinger-E]

The denominator of formula (8) is a vector in this papper. The author does not clearly explain the process of calculating the Softmax.

[yuranusduke]

Well, you can look into the idea via code, in code, author used softmax in the first dimension, in other words, 'split' dimension, in code, they used 4. You can think it in this way: for each element in one splitted part, it will be calculated with softmax operation across all splitted parts in the same position.