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# Contributing to detectron2 | |
## Issues | |
We use GitHub issues to track public bugs and questions. | |
Please make sure to follow one of the | |
[issue templates](https://github.com/facebookresearch/detectron2/issues/new/choose) | |
when reporting any issues. | |
Facebook has a [bounty program](https://www.facebook.com/whitehat/) for the safe | |
disclosure of security bugs. In those cases, please go through the process | |
outlined on that page and do not file a public issue. | |
## Pull Requests | |
We actively welcome your pull requests. | |
However, if you're adding any significant features (e.g. > 50 lines), please | |
make sure to have a corresponding issue to discuss your motivation and proposals, | |
before sending a PR. We do not always accept new features, and we take the following | |
factors into consideration: | |
1. Whether the same feature can be achieved without modifying detectron2. | |
Detectron2 is designed so that you can implement many extensions from the outside, e.g. | |
those in [projects](https://github.com/facebookresearch/detectron2/tree/master/projects). | |
If some part is not as extensible, you can also bring up the issue to make it more extensible. | |
2. Whether the feature is potentially useful to a large audience, or only to a small portion of users. | |
3. Whether the proposed solution has a good design / interface. | |
4. Whether the proposed solution adds extra mental/practical overhead to users who don't | |
need such feature. | |
5. Whether the proposed solution breaks existing APIs. | |
When sending a PR, please do: | |
1. If a PR contains multiple orthogonal changes, split it to several PRs. | |
2. If you've added code that should be tested, add tests. | |
3. For PRs that need experiments (e.g. adding a new model or new methods), | |
you don't need to update model zoo, but do provide experiment results in the description of the PR. | |
4. If APIs are changed, update the documentation. | |
5. Make sure your code lints with `./dev/linter.sh`. | |
## Contributor License Agreement ("CLA") | |
In order to accept your pull request, we need you to submit a CLA. You only need | |
to do this once to work on any of Facebook's open source projects. | |
Complete your CLA here: <https://code.facebook.com/cla> | |
## License | |
By contributing to detectron2, you agree that your contributions will be licensed | |
under the LICENSE file in the root directory of this source tree. | |