數據集地址：
https://www.cs.toronto.edu/~kriz/cifar.html
CIFAR-10和CIFAR-100是8000萬微型圖像數據集的子集。它們由亞歷克斯·克里日夫斯基、維諾德·奈爾和傑弗裏·辛頓收集。
CIFAR-10 數據集
CIFAR-10數據集包含10個類，總共有60000張32x32彩色圖像，每個類包含6000張圖像。培訓圖片50000張，測試圖片10000張。
數據集分爲5個訓練集和1個測試集，每個集包含10000張圖像。測試組恰好包含每個類中隨機選擇的1000張圖像。訓練組則隨機地包含其餘的圖像，但是一些訓練組可能包含來自一個類的圖像多於另一個類的圖像。在它們之間，訓練組包含每個類的5000個圖像。
10個類包括：
airplane 、automobile、bird、cat、deer、dog、frog、horse、ship、truck
CIFAR-100數據集
這個數據集與CIFAR-10類似，只是它有100個類，每個類包含600張圖像。每班有500張訓練圖片和100張測試圖片。CIFAR-100中的100個類被分爲20個超類。每個圖像都帶有一個“精細”標籤(它所屬的類)和一個“粗”標籤(它所屬的超類)。
以下是CIFAR-100分類列表:
Superclass Classes
aquatic mammalsbeaver, dolphin, otter, seal, whale
fish aquarium fish, flatfish, ray, shark, trout
flowers orchids, poppies, roses, sunflowers, tulips
food containers bottles, bowls, cans, cups, plates
fruit and vegetables apples, mushrooms, oranges, pears, sweet peppers
household electrical devices clock, computer keyboard, lamp, telephone, television
household furniture bed, chair, couch, table, wardrobe
insects bee, beetle, butterfly, caterpillar, cockroach
large carnivores bear, leopard, lion, tiger, wolf
large man-made outdoor things bridge, castle, house, road, skyscraper
large natural outdoor scenes cloud, forest, mountain, plain, sea
large omnivores and herbivores camel, cattle, chimpanzee, elephant, kangaroo
medium-sized mammals fox, porcupine, possum, raccoon, skunk
non-insect invertebrates crab, lobster, snail, spider, worm
people baby, boy, girl, man, woman
reptiles crocodile, dinosaur, lizard, snake, turtle
small mammals hamster, mouse, rabbit, shrew, squirrel
trees maple, oak, palm, pine, willow
vehicles 1 bicycle, bus, motorcycle, pickup truck, train
vehicles 2 lawn-mower, rocket, streetcar, tank, tractor