[BLIP2]: Low accuracy of zeroshot VQA of BLIP2-opt-2.7b

[YuanLiuuuuuu]

Hi,

Thank you for your great work BLIP2. I find there is no zeroshot VQA evaluation code for BLIP2-OPT, so I create one, refering to the code of FLAN-T5. However, the accuracy is very low. I will be very grateful if you can provide the code for BLIP2-OPT VQA zeroshot. Thanks in advance!