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[PaddlePaddle Hackathon] add ResNeXt #36070

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Oct 15, 2021
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[PaddlePaddle Hackathon] add ResNeXt #36070

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3 changes: 2 additions & 1 deletion python/paddle/tests/test_pretrained_model.py
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Original file line number Diff line number Diff line change
Expand Up @@ -53,7 +53,8 @@ def infer(self, arch):

def test_models(self):
arches = [
'mobilenet_v1', 'mobilenet_v2', 'resnet18', 'vgg16', 'alexnet'
'mobilenet_v1', 'mobilenet_v2', 'resnet18', 'vgg16', 'alexnet',
'resnext50_32x4d'
]
for arch in arches:
self.infer(arch)
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18 changes: 18 additions & 0 deletions python/paddle/tests/test_vision_models.py
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Expand Up @@ -73,6 +73,24 @@ def test_resnet152(self):
def test_alexnet(self):
self.models_infer('alexnet')

def test_resnext50_32x4d(self):
self.models_infer('resnext50_32x4d')

def test_resnext50_64x4d(self):
self.models_infer('resnext50_64x4d')

def test_resnext101_32x4d(self):
self.models_infer('resnext101_32x4d')

def test_resnext101_64x4d(self):
self.models_infer('resnext101_64x4d')

def test_resnext152_32x4d(self):
self.models_infer('resnext152_32x4d')

def test_resnext152_64x4d(self):
self.models_infer('resnext152_64x4d')

def test_vgg16_num_classes(self):
vgg16 = models.__dict__['vgg16'](pretrained=False, num_classes=10)

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7 changes: 7 additions & 0 deletions python/paddle/vision/__init__.py
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Expand Up @@ -46,6 +46,13 @@
from .models import LeNet # noqa: F401
from .models import AlexNet # noqa: F401
from .models import alexnet # noqa: F401
from .models import ResNeXt # noqa: F401
from .models import resnext50_32x4d # noqa: F401
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api名称跟resnet50不一致的原因是什么？resnet50是否如何区分32和64的?

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因为 ResNeXt 在卷积时是分组进行的呀，ResNet 是没有分组的过程的，因此 ResNeXt 有一个分组数量的参数 cardinality，resnext50_32x4d 中的 32 是指 cardinality = 32

另外作为参考 torchvision.models 也是如此命名的

image

from .models import resnext50_64x4d # noqa: F401
from .models import resnext101_32x4d # noqa: F401
from .models import resnext101_64x4d # noqa: F401
from .models import resnext152_32x4d # noqa: F401
from .models import resnext152_64x4d # noqa: F401
from .transforms import BaseTransform # noqa: F401
from .transforms import Compose # noqa: F401
from .transforms import Resize # noqa: F401
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16 changes: 15 additions & 1 deletion python/paddle/vision/models/__init__.py
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Expand Up @@ -30,6 +30,13 @@
from .lenet import LeNet # noqa: F401
from .alexnet import AlexNet # noqa: F401
from .alexnet import alexnet # noqa: F401
from .resnext import ResNeXt # noqa: F401
from .resnext import resnext50_32x4d # noqa: F401
from .resnext import resnext50_64x4d # noqa: F401
from .resnext import resnext101_32x4d # noqa: F401
from .resnext import resnext101_64x4d # noqa: F401
from .resnext import resnext152_32x4d # noqa: F401
from .resnext import resnext152_64x4d # noqa: F401

__all__ = [ #noqa
'ResNet',
Expand All @@ -49,5 +56,12 @@
'mobilenet_v2',
'LeNet',
'AlexNet',
'alexnet'
'alexnet',
'ResNeXt',
'resnext50_32x4d',
'resnext50_64x4d',
'resnext101_32x4d',
'resnext101_64x4d',
'resnext152_32x4d',
'resnext152_64x4d'
]
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