purpose of "id" element in coco train data?

[stevebottos]

Hey, real quick question - I'm putting together a custom dataset of captions in the coco format, and it's pretty obvious how the "image_id" and "caption" values are put to use, but the "id" field isn't too clear. Is it necessary?

[lonleyodd]

i think it's not necessary, i make own dataset like this:
temp_dict={} temp_dict["image_id"]=k temp_dict["caption"]=v[cap] temp_dict['clip_embedding']=idx
it can also train