Model card: cut what the code repo already documents
Browse filesRemoves the sections duplicated from the GitHub README (usage command block, class lists, beta-convention explanation, licence detail, full citation BibTeX) and links there instead. Keeps only what is specific to these artifacts: which seed and epoch, checkpoint dict layout, the non-portable TensorRT engine, and the model-card limitations. 198 -> 124 lines.
README.md
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Released weights for **AffKernel**: single-pass, NMS-free affordance
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segmentation. RT-DETR object queries generate per-query dynamic convolution
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kernels that decode per-object affordance masks from one shared high-resolution
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map.
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*where* to act on it.
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**
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| Reproduction guide | [`docs/reproduction.md`](https://github.com/anh0001/affkernel/blob/main/docs/reproduction.md) |
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| Dataset setup | [`docs/datasets.md`](https://github.com/anh0001/affkernel/blob/main/docs/datasets.md) |
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## What this checkpoint is
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weights, fp32.
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| `F_beta^w` (beta^2 = 1)
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| `F_beta^w` (beta^2 = 0.3)
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| Model-only latency, 640x640, fp32, RTX 6000 Ada | 16.3 ms |
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For context the three-seed mean is 0.8675 ± 0.0009; this is seed 42, the paper's
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anchor seed and the highest of the three (seed 7: 0.8668, seed 123: 0.8673). The
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epoch was fixed a priori (last epoch, EMA) rather than selected on the test set.
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> validation split, so the same test set that produced this number also informed
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> the recipe as it evolved and the choice of reported configuration. Fixing the
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> last epoch a priori prevents peak-checkpoint selection but not that broader
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> adaptive use. Read it as evidence from a single benchmark, not as an estimate
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> of generalisation.
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Baseline comparisons, the readout-resolution ladder, the full deployment
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benchmarks and the ablations are all in the
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[repository README](https://github.com/anh0001/affkernel#readme). Peer latencies
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there are measured on each method's own hardware and are not normalised, so no
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speed ratio between them is meaningful.
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## Usage
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```bash
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git clone https://github.com/anh0001/affkernel.git
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cd affkernel
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pip install -r requirements.txt huggingface_hub
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hf download anhrisn/affkernel-iit-aff \
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affkernel_iit_r50vd_stride2_deepsup_seed42.pth --local-dir weights/
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python tools/infer.py \
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-c configs/rtdetr/rtdetr_r50vd_6x_iit_v3_stride2_deepsup.yml \
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-r weights/affkernel_iit_r50vd_stride2_deepsup_seed42.pth \
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--input path/to/image.jpg \
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--output outputs/
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```
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The first run downloads the ImageNet-pretrained ResNet-50vd backbone from the
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RT-DETR release artefacts, so it needs network access. Set
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`PResNet.pretrained: False` for an offline deployment.
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## Files
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| File | What it is |
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| `affkernel_iit_r50vd_stride2_deepsup_seed42.pth` | The model. fp32 EMA weights, 174 MB. |
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| `backbone_fp16.plan` | Optional
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`deepsup` in the filename is the historical identifier for the auxiliary readout
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losses used during training; it is kept so the documented commands keep working.
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@@ -111,6 +79,10 @@ are not included. **Do not repack this into a bare `{"model": ...}` dict**: unde
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an EMA-enabled config the solver would then evaluate a freshly initialised EMA
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module and score near zero.
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### `backbone_fp16.plan`
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The dynamic-kernel affordance head cannot be exported to ONNX, but the backbone
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> minutes, and it is the supported path. See
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> [Deployment](https://github.com/anh0001/affkernel#deployment-on-nvidia-jetson).
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## Classes
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**Objects (10):** bowl, tvm, pan, hammer, knife, cup, drill, racket, spatula, bottle
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**Affordances (9):** contain, cut, display, engine, grasp, hit, pound, support, w-grasp
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## Intended use and limitations
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- Closed vocabulary
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- IIT-AFF is a tabletop dataset. Other viewpoints, lighting or clutter regimes
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are untested.
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- The residual error is dominated by **missed detections** rather than by mask
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quality.
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that figure excludes detection misses, so it is not protocol-matched to
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published full-set numbers and is not a state-of-the-art claim.
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- The headline latency is fp32 on an RTX 6000 Ada. fp16, CUDA graphs and the
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TensorRT backbone are characterised on that machine and on a Jetson AGX Orin
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(23.1 FPS end to end within 0.23 GiB) and cost at most 0.0007 `F_beta^w`,
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below the seed-to-seed spread.
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- Not validated for safety-critical deployment. A predicted grasp region is a
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perception cue, not a guarantee of a safe grasp.
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## License
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ImageNet-pretrained backbone they were initialised from. The
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states no licence and its authors request citation of the original paper. Obtain
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it from https://sites.google.com/site/iitaffdataset/.
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## Citation
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```bibtex
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@article{risnumawan2026affkernel,
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title = {AffKernel: High-Resolution Readout for Real-Time Visual
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Affordance Segmentation},
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author = {Risnumawan, Anhar and Aji, Achmad Fahrul and
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Fatahillah, Teuku Zikri and Kubota, Naoyuki},
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journal = {Expert Systems with Applications},
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year = {2026},
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note = {Under review}
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}
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@inproceedings{nguyen2017object,
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title = {Object-Based Affordances Detection with Convolutional Neural
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Networks and Dense Conditional Random Fields},
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author = {Nguyen, Anh and Kanoulas, Dimitrios and Caldwell, Darwin G. and
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Tsagarakis, Nikos G.},
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booktitle = {IEEE/RSJ International Conference on Intelligent Robots and
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Systems (IROS)},
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year = {2017}
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}
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@inproceedings{lv2024detrs,
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title = {DETRs Beat YOLOs on Real-time Object Detection},
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author = {Lv, Wenyu and Zhao, Yian and Xu, Shangliang and Wei, Jinman and
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Wang, Guanzhong and Cui, Cheng and Du, Yuning and Dang, Qingqing
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and Liu, Yi},
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booktitle = {CVPR},
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year = {2024}
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}
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```
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Released weights for **AffKernel**: single-pass, NMS-free affordance
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segmentation. RT-DETR object queries generate per-query dynamic convolution
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kernels that decode per-object affordance masks from one shared high-resolution
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map.
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> **This card describes the artifacts only.** Method, results, ablations,
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> deployment benchmarks, protocol caveats, licensing detail and citation all
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> live in the code repository and are deliberately not repeated here:
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> **https://github.com/anh0001/affkernel**
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> ([reproduction guide](https://github.com/anh0001/affkernel/blob/main/docs/reproduction.md),
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> [dataset setup](https://github.com/anh0001/affkernel/blob/main/docs/datasets.md))
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## What this checkpoint is
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IIT-AFF, 72 epochs, **seed 42**, last-epoch EMA weights, fp32.
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| `F_beta^w` (beta^2 = 1) | **0.8685** |
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| `F_beta^w` (beta^2 = 0.3) | 0.8582 |
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This is one seed, not the headline mean: the three-seed figure is
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0.8675 ± 0.0009, and seed 42 is the highest of the three (7: 0.8668,
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123: 0.8673). Both beta conventions are given because a `beta^2 = 1` number
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must never be compared against a `beta^2 = 0.3` one. Read the accuracy as
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exploratory rather than confirmatory: IIT-AFF ships no validation split, so the
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same test set also informed the recipe. Full reasoning in the repository README.
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## Load it
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```bash
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hf download anhrisn/affkernel-iit-aff \
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affkernel_iit_r50vd_stride2_deepsup_seed42.pth --local-dir weights/
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```
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Inference, evaluation and deployment commands are in the
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[repository README](https://github.com/anh0001/affkernel#readme).
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## Files
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| File | What it is |
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| `affkernel_iit_r50vd_stride2_deepsup_seed42.pth` | The model. fp32 EMA weights, 174 MB. |
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| `backbone_fp16.plan` | Optional TensorRT fp16 **backbone-only** engine, 46.4 MiB. Not portable, not usable on its own. |
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`deepsup` in the filename is the historical identifier for the auxiliary readout
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losses used during training; it is kept so the documented commands keep working.
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an EMA-enabled config the solver would then evaluate a freshly initialised EMA
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module and score near zero.
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The first run fetches the ImageNet-pretrained ResNet-50vd backbone from the
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`PResNet.pretrained: False` for an offline deployment.
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### `backbone_fp16.plan`
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The dynamic-kernel affordance head cannot be exported to ONNX, but the backbone
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> minutes, and it is the supported path. See
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> [Deployment](https://github.com/anh0001/affkernel#deployment-on-nvidia-jetson).
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## Intended use and limitations
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Research on affordance perception and perception-guided grasping.
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- Closed vocabulary: 10 object and 9 affordance classes, listed in
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[`docs/datasets.md`](https://github.com/anh0001/affkernel/blob/main/docs/datasets.md).
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It will not generalise to unseen categories.
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- IIT-AFF is a tabletop dataset. Other viewpoints, lighting or clutter regimes
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are untested.
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- The residual error is dominated by **missed detections** rather than by mask
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quality.
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- Not validated for safety-critical deployment. A predicted grasp region is a
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perception cue, not a guarantee of a safe grasp.
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## License
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Weights are Apache-2.0, matching the RT-DETR components and the
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ImageNet-pretrained backbone they were initialised from. The **IIT-AFF dataset
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is not redistributed** here; obtain it from
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https://sites.google.com/site/iitaffdataset/. Full attribution and the citation
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BibTeX are in the
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[repository](https://github.com/anh0001/affkernel/blob/main/THIRD_PARTY_LICENSES.md).
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