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PNASNet

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PNASNet

Category: CNN · Code: timm/models/pnasnet.py · Architectures: 1 · Pretrained weights: 1 (1 with ImageNet-1k results)

PNASNet-5 Large, found by progressive neural architecture search, from Cadene’s pretrained models port.

Papers

Usage

See the Quickstart for loading pretrained weights, image preprocessing and fine-tuning, and Feature Extraction for using the models as backbones.

>>> import timm
>>> model = timm.create_model('pnasnet5large.tf_in1k', pretrained=True)
>>> data_config = timm.data.resolve_model_data_config(model)

Model API support

FeaturePNASNet5Large
features_only=True feature maps✓ (strides 2, 4, 8, 16, 32)
forward_intermediates()✗
prune_intermediate_layers()✗
Any input size, no changes needed✓
set_input_size()–
dynamic_img_size=True–
set_grad_checkpointing()✗
Layer-wise LR decay (group_matcher())✓
reset_classifier()✓

✓ supported, ✓ (square) works for square sizes only, ✗ not supported, – not needed (the model already accepts any input size). Checked by running each feature on a randomly initialized model (PNASNet5Large with pnasnet5large at 331), other architectures of the same class are expected to behave the same. See the Model API page for details.

Architectures

ArchitectureParams (M)GMACsInput sizePretrained weights
pnasnet5large86.0625.043311

GMACs and parameter counts are for the default input size and classifier of each architecture, from the benchmark results.

Pretrained weights

Top-1 is ImageNet-1k validation accuracy from results-imagenet.csv at the listed eval size, - if the weight has no ImageNet-1k result (e.g. pretraining or image-text weights). Classes is the size of the pretrained classifier, none for weights without one.

WeightInput sizeTop-1 (%)Eval sizeClassesLicenseHub
pnasnet5large.tf_in1k33182.8143311000apache-2.0timm
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