Thank you @Professor It's quite unfortunte that my EfficientNet-b0 model ran out of cuda suddenly on colab in the end using CV kfold 5 and stopped after running for more than 2 hours. I could only improved Starter Notebook using different models then ensemble their scores and I wish i could add my EfficientNet score to this but still i am well pleased with my final score. Anyway, thanks for your quick response on the datasets. Really appreciate. Have learnt a lot here. Like i said before i joined this challenge less than 24 hours to go, i uploaded my first csv file 9+ hours to go.