alt.freeweights.vision / cs3darknet_l.c2ns_in1k
From: timm <huggingface.co/timm>Newsgroups: alt.freeweights.visionSubject:

cs3darknet_l.c2ns_in1k

Date: 2026-11-15Commit: 24c5d13Signed: 2DC28CC7B26A283B ✓

Image classification model with 21M parameters. Safetensors weights, 170 MB in all. Published by timm under Apache-2.0.

21M params170MBcs3darknet_l.c2ns_in1ksafetensorspermissive
FactsParams21MSize170 MBFormatssafetensorsTaskimage classificationLicenseApache-2.0From sourcepermissive
$ fw get timm/cs3darknet_l.c2ns_in1k
# manifest sha256 c5e7eacd30cd… · 170 MB · 5 files
$ fw verify ./cs3darknet_l.c2ns_in1k timm/cs3darknet_l.c2ns_in1k
From sourceHosted (signed)timm/cs3darknet_l.c2ns_in1kLast check: 2026-11-15 03:39 UTC

Get help: custom fine-tune or private deploy. We review your setup before we quote.

Works with

Runs with

Ranked by fit to this model (safetensors), then by GitHub stars.

Overview

Size
170 MB
Weights
84.8 MB (safetensors)
Parameters
21M
Formats
safetensors
Task
image classification
License
Apache-2.0 (permissive)
Files
5, each with a sha256
Publisher
timm
Added
2026-11-15
Section
alt.freeweights.vision
Lineage

Original release from the publisher.

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From sourcehuggingface.co2026-11-15 03:39 UTCpassed

Model card

From the publisher at commit 24c5d13. Shown as plain text with links; images open at the publisher.

Model card for cs3darknet_l.c2ns_in1k#

A CS3-DarkNet (Cross-Stage-Partial w/ 3 convolutions) image classification model. Trained on ImageNet-1k in timm using recipe template described below.

Recipe details:

  • Based on ResNet Strikes Back C recipes w/o repeat-aug and stronger mixup
  • SGD (w/ Nesterov) optimizer and AGC (adaptive gradient clipping)
  • No stochastic depth used in this ns variation of the recipe
  • Cosine LR schedule with warmup

Model Details#

Model Usage#

Image Classification#
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('cs3darknet_l.c2ns_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)
Feature Map Extraction#
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(
    'cs3darknet_l.c2ns_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, 128, 64, 64])
    #  torch.Size([1, 256, 32, 32])
    #  torch.Size([1, 512, 16, 16])
    #  torch.Size([1, 1024, 8, 8])

    print(o.shape)
Image Embeddings#
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(
    'cs3darknet_l.c2ns_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, 1024, 8, 8) shaped tensor

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

Model Comparison#

Explore the dataset and runtime metrics of this model in timm model results.

Citation#

@article{Wang2019CSPNetAN,
  title={CSPNet: A New Backbone that can Enhance Learning Capability of CNN},
  author={Chien-Yao Wang and Hong-Yuan Mark Liao and I-Hau Yeh and Yueh-Hua Wu and Ping-Yang Chen and Jun-Wei Hsieh},
  journal={2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops (CVPRW)},
  year={2019},
  pages={1571-1580}
}
@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{Redmon2018YOLOv3AI,
  title={YOLOv3: An Incremental Improvement},
  author={Joseph Redmon and Ali Farhadi},
  journal={ArXiv},
  year={2018},
  volume={abs/1804.02767}
}
@inproceedings{wightman2021resnet,
  title={ResNet strikes back: An improved training procedure in timm},
  author={Wightman, Ross and Touvron, Hugo and Jegou, Herve},
  booktitle={NeurIPS 2021 Workshop on ImageNet: Past, Present, and Future}
}

Files

5 files · 170 MBWeights 84.8 MB (safetensors). Sizes and sha256 from the signed manifest.
Hide all 5 files with their sha256
FileSizesha256
.gitattributes1.48 KBdb7c0371f46f0840b8f25794c1e3321c9b5820a8cb6ba9694a46fc64b8fae5a6
README.md5.05 KB07fca59c4e5a2daee34967574c42a4e7ca37b1741e94d7ce92784aa8e85a0fb7
config.json669 B5489ec96cc27efeabddd2d0ab615efcba704889be2c7e3fd681214f3f5730350
model.safetensors84.8 MB62e7bfdf6cdfccb97098da3ee405521ba0d2c681ab889e202538aaaa28bb5de0
pytorch_model.bin84.9 MBbb07d2f87e602e9612fe1c6aff6eebe923e9f2761d6a0108df78b45222e2ab7a
VersionsEach time the pinned upstream commit or file list changed in this repo. Newest first.
Upstream commitDateContents
24c5d1376a pinned now2026-11-15 03:39 UTC5 files · 170 MB

Use it

$ fw get timm/cs3darknet_l.c2ns_in1k
# manifest sha256 c5e7eacd30cd… · 170 MB · 5 files
$ fw verify ./cs3darknet_l.c2ns_in1k timm/cs3darknet_l.c2ns_in1k
fw.pyChecks the signature and every sha256, tries each source in order, resumes.
$ python3 fw.py get https://freeweights.allternit.com/manifests/timm/cs3darknet_l.c2ns_in1k.json --dir ./cs3darknet_l.c2ns_in1k $ python3 fw.py verify ./cs3darknet_l.c2ns_in1k ./timm__cs3darknet_l.c2ns_in1k.json
hfThe Hugging Face CLI with one setting. Same repo id.
$ HF_ENDPOINT=https://freeweights.allternit.com hf download timm/cs3darknet_l.c2ns_in1k --revision 24c5d1376a5ee438356a09f686b2800ff94e62cf --local-dir ./cs3darknet_l.c2ns_in1k

License

Name
Apache License 2.0
Id
Apache-2.0
Class
Permissive
Redistribution
yes
Listing
Hosted (signed)
Decided
License as declared by the publisher. No person read it. 2026-11-15
Text in
README.md
Text sha256
07fca59c4e5a2daee34967574c42a4e7ca37b1741e94d7ce92784aa8e85a0fb7
Terms gate
No extra terms beyond the license.

Read the license text

Licenses are checked against the license table. A custom license passes only after a person reads it.

Provenance

From: timm <huggingface.co/timm>Newsgroups: alt.freeweights.visionSubject: cs3darknet_l.c2ns_in1kDate: 2026-11-15Commit: 24c5d13Signed: 2DC28CC7B26A283B ✓
Upstream
timm/cs3darknet_l.c2ns_in1k
Pinned commit
24c5d1376a5ee438356a09f686b2800ff94e62cf
Manifest
cs3darknet_l.c2ns_in1k.json · .minisig
Manifest sha256
c5e7eacd30cd349e61ad12e2fe077a70ed8d23a57287739777abc14d3040f3b8
Signature
minisign, Ed25519, key 2DC28CC7B26A283B
Created
2026-11-15 03:39 UTC
Generator
freeweights-manifest/0.1.0
Takedowns
None.

How to verify

$ curl -O https://freeweights.allternit.com/manifests/timm/cs3darknet_l.c2ns_in1k.json $ curl -O https://freeweights.allternit.com/manifests/timm/cs3darknet_l.c2ns_in1k.json.minisig $ minisign -Vm cs3darknet_l.c2ns_in1k.json -P RWQ7KGqyx4zCLXtUFOqvfv8L3g+8fpKJ1FsuxPyOYMF+4KufbUxKq1Oq $ shasum -a 256 <file> # compare with the Files tab

A manifest whose signature fails must be rejected. A file whose size or sha256 does not match must be discarded. Verify a download

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Download
$ HF_ENDPOINT=https://freeweights.allternit.com hf download timm/cs3darknet_l.c2ns_in1k
Open in Freeweights Studio

Pull, verify and run it in the Allternit app on Desktop, web or phone.

Signed manifest
minisign, key 2DC28CC7B26A283B. cs3darknet_l.c2ns_in1k.json. Provenance. Takedown history: none.
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