# Role of Ground Truth in calculating metrics

**URL:** <https://discuss.roboflow.com/t/role-of-ground-truth-in-calculating-metrics/3062>\
**Category:** 🛠️ Feature Reqs\
**Created:** [August 28, 2023, 6:15pm UTC](https://discuss.roboflow.com/t/role-of-ground-truth-in-calculating-metrics/3062 "2023-08-28T18:15:22Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Paul\_Petronelli](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/paul_petronelli/32/2730_2.png) [@Paul\_Petronelli](https://discuss.roboflow.com/u/Paul_Petronelli)\
**Post date:** [August 28, 2023, 6:15pm UTC](https://discuss.roboflow.com/t/role-of-ground-truth-in-calculating-metrics/3062/1 "2023-08-28T18:15:22Z")

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Recently used the free project option to run some imagery. 26 images uploaded an provided annotations and bounding boxes for them. The toolkit did training and came up with these statistics:

Your **EchoTest (2023-08-11 11:22am)** model has finished training in **13 minutes** and achieved

**43.1% mAP, 91.2%**  **precision** , and **40.0%**  **recall**.

My understanding is that these metrics are based on the model’s performance compared with Ground Truth. My project does not have ground truth. Can you shed some light on how these numbers were arrived at?

**Best**

**Paul Petronelli**

[palm@palmcorp.com](mailto:palm@palmcorp.com)

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**Author:** ![leo](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/leo/32/2228_2.png) [@leo](https://discuss.roboflow.com/u/leo)\
**Post date:** [August 29, 2023, 10:25am UTC](https://discuss.roboflow.com/t/role-of-ground-truth-in-calculating-metrics/3062/2 "2023-08-29T10:25:10Z")

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Hi @Paul_Petronelli

Yes, you are correct. The metrics you mentioned are based on inference vs ground truth. Could you share your project so we can take a deeper look and get on the same page? (You can share your Universe link if you are on the public plan)

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<div class="post-metadata">

**Author:** ![Paul\_Petronelli](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/paul_petronelli/32/2730_2.png) [@Paul\_Petronelli](https://discuss.roboflow.com/u/Paul_Petronelli)\
**Post date:** [September 4, 2023, 1:09am UTC](https://discuss.roboflow.com/t/role-of-ground-truth-in-calculating-metrics/3062/3 "2023-09-04T01:09:46Z")

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Thanks for the feedback. Will check with my board and see what can be released.