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StarNet

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StarNet

Category: Efficient/Mobile · Code: timm/models/starnet.py · Architectures: 7 · Pretrained weights: 4 (4 with ImageNet-1k results)

StarNet is a deliberately simple proof-of-concept network built around the star operation, the element-wise multiplication of two branches.

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('starnet_s4.in1k', pretrained=True)
>>> data_config = timm.data.resolve_model_data_config(model)

Model API support

FeatureStarNet
features_only=True feature maps✓ (strides 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 (StarNet with starnet_s050 at 224), 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
starnet_s12.870.422241
starnet_s23.680.552241
starnet_s35.750.762241
starnet_s47.481.052241
starnet_s0500.540.092240
starnet_s1001.040.192240
starnet_s1501.560.232240

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
starnet_s1.in1k22473.5322241000apache-2.0timm
starnet_s2.in1k22474.6662241000apache-2.0timm
starnet_s3.in1k22477.3782241000apache-2.0timm
starnet_s4.in1k22478.8242241000apache-2.0timm
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