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license: apache-2.0
library_name: libreyolo
tags:
- object-detection
- damo-yolo
---
# LibreDAMOYOLOt
DAMO-YOLO-T (TinyNAS_res backbone, GiraffeNeckV2, ZeroHead with GFL/DFL),
8.9M params, 640x640 input, post-distill release weights, repackaged for
LibreYOLO.
COCO val 2017 mAP: **0.4199** (matches upstream's reported 42.0).
## Source
Derived from [tinyvision/DAMO-YOLO](https://github.com/tinyvision/DAMO-YOLO)
at commit `319572e` (release v0.3.1, post-distill).
The original `damoyolo_tinynasL20_T_420.pth` checkpoint was hosted on
Alibaba's Aliyun bucket which is now offline. This weight was recovered
from the [Internet Archive's Wayback Machine](https://web.archive.org/),
snapshot `20250307203525`.
Copyright (c) 2021-2022 Alibaba Group Holding Limited. Licensed under the
Apache License, Version 2.0.
## Modifications
File rename only. `damoyolo_tinynasL20_T_420.pth` is bit-identical to
`LibreDAMOYOLOt.pt`. LibreYOLO's `nn.Module` class hierarchy mirrors
upstream's exactly so `model.load_state_dict(...)` is strict.
Verified by running COCO val 2017 with both pipelines: same mAP 0.4199
to four decimals; raw `cls_scores` and `boxes` tensors match upstream's
output to 0.0 absolute difference on identical input.
See `libreyolo/models/damoyolo/` in the
[LibreYOLO source repository](https://github.com/LibreYOLO/libreyolo)
for the architecture port.
## License
Apache License 2.0. See the [`LICENSE`](./LICENSE) and
[`NOTICE`](./NOTICE) files in this repository.
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