crucifixion, cruise, cruise ship, cruiser, crumb, crumble, crumple, crumpled, crunch, crunching, crunchy, crush, crust, crustacean, crusty, crutch, cry, crypt, crystal, crystal clear, crystalline, cub, cube, cubic, cubism, cuckoo, cucumber, cuddle, cuddly, cue, cuff, cuisine, culinary, culti...
with multiple concepts per image. The class distributions on train and validation sets are long-tailed. The validation set was annotated using a combination of originally curated labels with incomplete annotations, where were further completed by adding additional labels. ...