模型:

timm/maxvit_nano_rw_256.sw_in1k

英文

maxvit_nano_rw_256.sw_in1k 模型卡片

一个特定于timm的MaxViT图像分类模型。由Ross Wightman在ImageNet-1k上使用timm进行训练。

由于 TRC 项目的支持,ImageNet-1k的训练在TPU上完成。

maxxvit.py 中的模型变种

MaxxViT包括一系列相关的模型架构,它们共享一个共同的结构,包括:

  • CoAtNet - 在早期阶段将MBConv(深度可分离)卷积块与后期阶段的自注意力转换块相结合。
  • MaxViT - 在所有阶段都有统一的块,每个块都包含一个MBConv(深度可分离)卷积块,然后是两个具有不同分区方案(窗口后跟网格)的自注意力块。
  • CoAtNeXt - 一种timm特定的架构,它在CoAtNet中使用ConvNeXt块,而不是MBConv块。所有规范化层都是LayerNorm(没有BatchNorm)。
  • MaxxViT - 一种timm特定的架构,它在MaxViT中使用ConvNeXt块,而不是MBConv块。所有规范化层都是LayerNorm(没有BatchNorm)。
  • MaxxViT-V2 - 一种MaxxViT变体,它删除了窗口块的注意力,只保留了ConvNeXt块和具有更多宽度的网格注意力以进行补偿。

除了以上列出的主要变体,从模型到模型还存在更细微的变化。任何模型名称中带有字符串rw的都是timm特定的配置,其中进行了建模调整以支持PyTorch的即时使用。这些模型是在训练初始的模型复现时创建的,因此存在一些变化。所有带有字符串tf的模型都是完全匹配原始论文作者基于TensorFlow创建的模型,其权重已转换为PyTorch格式。这包括了许多MaxViT模型。官方的CoAtNet模型从未发布过。

模型细节

  • 模型类型:图像分类/特征骨干网络
  • 模型统计数据:
    • 参数(M):15.5
    • GMACs:4.5
    • 激活数(M):30.3
    • 图像尺寸:256 x 256
  • 论文:
  • 数据集:ImageNet-1k

模型用途

图像分类

from urllib.request import urlopen
from PIL import Image
import timm

img = Image.open(urlopen(
    'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
))

model = timm.create_model('maxvit_nano_rw_256.sw_in1k', pretrained=True)
model = model.eval()

# get model specific transforms (normalization, resize)
data_config = timm.data.resolve_model_data_config(model)
transforms = timm.data.create_transform(**data_config, is_training=False)

output = model(transforms(img).unsqueeze(0))  # unsqueeze single image into batch of 1

top5_probabilities, top5_class_indices = torch.topk(output.softmax(dim=1) * 100, k=5)

特征图提取

from urllib.request import urlopen
from PIL import Image
import timm

img = Image.open(urlopen(
    'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
))

model = timm.create_model(
    'maxvit_nano_rw_256.sw_in1k',
    pretrained=True,
    features_only=True,
)
model = model.eval()

# get model specific transforms (normalization, resize)
data_config = timm.data.resolve_model_data_config(model)
transforms = timm.data.create_transform(**data_config, is_training=False)

output = model(transforms(img).unsqueeze(0))  # unsqueeze single image into batch of 1

for o in output:
    # print shape of each feature map in output
    # e.g.:
    #  torch.Size([1, 64, 128, 128])
    #  torch.Size([1, 64, 64, 64])
    #  torch.Size([1, 128, 32, 32])
    #  torch.Size([1, 256, 16, 16])
    #  torch.Size([1, 512, 8, 8])

    print(o.shape)

图像嵌入

from urllib.request import urlopen
from PIL import Image
import timm

img = Image.open(urlopen(
    'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
))

model = timm.create_model(
    'maxvit_nano_rw_256.sw_in1k',
    pretrained=True,
    num_classes=0,  # remove classifier nn.Linear
)
model = model.eval()

# get model specific transforms (normalization, resize)
data_config = timm.data.resolve_model_data_config(model)
transforms = timm.data.create_transform(**data_config, is_training=False)

output = model(transforms(img).unsqueeze(0))  # output is (batch_size, num_features) shaped tensor

# or equivalently (without needing to set num_classes=0)

output = model.forward_features(transforms(img).unsqueeze(0))
# output is unpooled, a (1, 512, 8, 8) shaped tensor

output = model.forward_head(output, pre_logits=True)
# output is a (1, num_features) shaped tensor

模型比较

按Top-1排序

model top1 top5 samples / sec Params (M) GMAC Act (M)
1239321 88.53 98.64 21.76 475.77 534.14 1413.22
12310321 88.32 98.54 42.53 475.32 292.78 668.76
12311321 88.20 98.53 50.87 119.88 138.02 703.99
12312321 88.04 98.40 36.42 212.33 244.75 942.15
12313321 87.98 98.56 71.75 212.03 132.55 445.84
12314321 87.92 98.54 104.71 119.65 73.80 332.90
12315321 87.81 98.37 106.55 116.14 70.97 318.95
12316321 87.47 98.37 149.49 116.09 72.98 213.74
12317321 87.39 98.31 160.80 73.88 47.69 209.43
12318321 86.89 98.02 375.86 116.14 23.15 92.64
12319321 86.64 98.02 501.03 116.09 24.20 62.77
12320321 86.60 97.92 50.75 119.88 138.02 703.99
12321321 86.57 97.89 631.88 73.87 15.09 49.22
12322321 86.52 97.88 36.04 212.33 244.75 942.15
12323321 86.49 97.90 620.58 73.88 15.18 54.78
12324321 86.29 97.80 101.09 119.65 73.80 332.90
12325321 86.23 97.69 70.56 212.03 132.55 445.84
12326321 86.10 97.76 88.63 69.13 67.26 383.77
12327321 85.67 97.58 144.25 31.05 33.49 257.59
12328321 85.54 97.46 188.35 69.02 35.87 183.65
12329321 85.11 97.38 293.46 30.98 17.53 123.42
12330321 84.93 96.97 247.71 211.79 43.68 127.35
12331321 84.90 96.96 1025.45 41.72 8.11 40.13
12332321 84.85 96.99 358.25 119.47 24.04 95.01
12333321 84.63 97.06 575.53 66.01 14.67 58.38
12334321 84.61 96.74 625.81 73.88 15.18 54.78
12335321 84.49 96.76 693.82 64.90 10.75 49.30
12336321 84.43 96.83 647.96 68.93 11.66 53.17
12337321 84.23 96.78 807.21 29.15 6.77 46.92
12338321 83.62 96.38 989.59 41.72 8.04 34.60
12339321 83.50 96.50 1100.53 29.06 5.11 33.11
12340321 83.41 96.59 1004.94 30.92 5.60 35.78
12341321 83.36 96.45 1093.03 41.69 7.85 35.47
12342321 83.11 96.33 1276.88 23.70 6.26 23.05
12343321 83.03 96.34 1341.24 16.78 4.37 26.05
12344321 82.96 96.26 1283.24 15.50 4.47 31.92
12345321 82.93 96.23 1218.17 15.45 4.46 30.28
12346321 82.39 96.19 1600.14 27.44 4.67 22.04
12347321 82.39 95.84 1831.21 27.44 4.43 18.73
12348321 82.05 95.87 2109.09 15.15 2.62 20.34
12349321 81.95 95.92 2525.52 14.70 2.47 12.80
12350321 81.70 95.64 2344.52 15.14 2.41 15.41
12351321 80.53 95.21 1594.71 7.52 1.85 24.86

按吞吐量(样本/秒)排序

model top1 top5 samples / sec Params (M) GMAC Act (M)
12349321 81.95 95.92 2525.52 14.70 2.47 12.80
12350321 81.70 95.64 2344.52 15.14 2.41 15.41
12348321 82.05 95.87 2109.09 15.15 2.62 20.34
12347321 82.39 95.84 1831.21 27.44 4.43 18.73
12346321 82.39 96.19 1600.14 27.44 4.67 22.04
12351321 80.53 95.21 1594.71 7.52 1.85 24.86
12343321 83.03 96.34 1341.24 16.78 4.37 26.05
12344321 82.96 96.26 1283.24 15.50 4.47 31.92
12342321 83.11 96.33 1276.88 23.70 6.26 23.05
12345321 82.93 96.23 1218.17 15.45 4.46 30.28
12339321 83.50 96.50 1100.53 29.06 5.11 33.11
12341321 83.36 96.45 1093.03 41.69 7.85 35.47
12331321 84.90 96.96 1025.45 41.72 8.11 40.13
12340321 83.41 96.59 1004.94 30.92 5.60 35.78
12338321 83.62 96.38 989.59 41.72 8.04 34.60
12337321 84.23 96.78 807.21 29.15 6.77 46.92
12335321 84.49 96.76 693.82 64.90 10.75 49.30
12336321 84.43 96.83 647.96 68.93 11.66 53.17
12321321 86.57 97.89 631.88 73.87 15.09 49.22
12334321 84.61 96.74 625.81 73.88 15.18 54.78
12323321 86.49 97.90 620.58 73.88 15.18 54.78
12333321 84.63 97.06 575.53 66.01 14.67 58.38
12319321 86.64 98.02 501.03 116.09 24.20 62.77
12318321 86.89 98.02 375.86 116.14 23.15 92.64
12332321 84.85 96.99 358.25 119.47 24.04 95.01
12329321 85.11 97.38 293.46 30.98 17.53 123.42
12330321 84.93 96.97 247.71 211.79 43.68 127.35
12328321 85.54 97.46 188.35 69.02 35.87 183.65
12317321 87.39 98.31 160.80 73.88 47.69 209.43
12316321 87.47 98.37 149.49 116.09 72.98 213.74
12327321 85.67 97.58 144.25 31.05 33.49 257.59
12315321 87.81 98.37 106.55 116.14 70.97 318.95
12314321 87.92 98.54 104.71 119.65 73.80 332.90
12324321 86.29 97.80 101.09 119.65 73.80 332.90
12326321 86.10 97.76 88.63 69.13 67.26 383.77
12313321 87.98 98.56 71.75 212.03 132.55 445.84
12325321 86.23 97.69 70.56 212.03 132.55 445.84
12311321 88.20 98.53 50.87 119.88 138.02 703.99
12320321 86.60 97.92 50.75 119.88 138.02 703.99
12310321 88.32 98.54 42.53 475.32 292.78 668.76
12312321 88.04 98.40 36.42 212.33 244.75 942.15
12322321 86.52 97.88 36.04 212.33 244.75 942.15
1239321 88.53 98.64 21.76 475.77 534.14 1413.22

引用

@misc{rw2019timm,
  author = {Ross Wightman},
  title = {PyTorch Image Models},
  year = {2019},
  publisher = {GitHub},
  journal = {GitHub repository},
  doi = {10.5281/zenodo.4414861},
  howpublished = {\url{https://github.com/huggingface/pytorch-image-models}}
}
@article{tu2022maxvit,
  title={MaxViT: Multi-Axis Vision Transformer},
  author={Tu, Zhengzhong and Talebi, Hossein and Zhang, Han and Yang, Feng and Milanfar, Peyman and Bovik, Alan and Li, Yinxiao},
  journal={ECCV},
  year={2022},
}        
@article{dai2021coatnet,
  title={CoAtNet: Marrying Convolution and Attention for All Data Sizes},
  author={Dai, Zihang and Liu, Hanxiao and Le, Quoc V and Tan, Mingxing},
  journal={arXiv preprint arXiv:2106.04803},
  year={2021}
}