Table 3.

Different classification results of VOC2007.

Criterion	Class Number	The Combination of Tags
1	16	mammal ←{cat, cow, dog, horse, sheep}
2	14	vehicle←{airplane, bicycle, boat, bus, car, motorbike, train}
3	17	furniture ←{chair, dining table, potted plant, sofa}
4	7	mammal ←{cat, cow, dog, horse, sheep}, vehicle←{airplane, bicycle, boat, bus, car, motorbike, train}, furniture ←{chair, dining table, potted plant, sofa}
5	4	tool ←{airplane, bicycle, boat, bus, car, motorbike, train, bottle}, animal←{cat, cow, dog, horse, sheep, bird}, furniture ←{chair, dining table, potted plant, sofa, tv/monitor}