Masters of Arts: ML Challenge, Mister MISISter's 6/52 place solution Solution Architecture Blending Optimizers Adam MADGRAD QHAdam Losses CrossEntropyLoss FocalLoss with class weights Schedulers One Cycle Scheduler Tricks LabelSmoothing Mixup Final Model Optimizers QHAdam Losses CrossEntropyLoss Schedulers One Cycle Scheduler Tricks Test Time Augmentation Blending Folds Hard Augmentations for better generalization on unseen data