ImageNet MCQ
Millions of labeled images organized by WordNet—pretraining on ImageNet shaped modern vision backbones.
Scale
1.2M train cls
WordNet
Synsets
ILSVRC
Challenge
Pretrain
Transfer
The ImageNet benchmark
ImageNet organizes images under WordNet synsets. The ILSVRC classification track popularized 1000-way supervised training; winning CNNs (AlexNet onward) transferred features to detection, segmentation, and beyond. Download policies and labeling noise are practical considerations when using subsets.
Synset
A synset groups synonymous nouns; each class corresponds to one synset's images.
Key ideas
Hierarchy
WordNet structure relates classes (not flat synonyms only in head).
Scale
Large enough to require strong generalization from CNNs.
ILSVRC
Annual competition that tracked progress on cls/det/seg tasks.
Transfer
Pretrained ImageNet weights initialize many downstream models.
Classification track
1.28M train images, 50k val, 1000 classes (ILSVRC2012 subset)