VQA pre-processing

[uehara-mech]

I'd like to apply this model to my own VQA-like dataset.
However, the dataset is in json format (like the original VQA dataset), so I need to convert it to lmdb file format.
So, if you have the code to convert the original VQA data to lmdb format, could you please provide the code?
Specifically, how did you calculate the "target" values in the text lmdb?