# Error in best\_exo tokens in few cases

**URL:** <https://discuss.ego4d-data.org/t/error-in-best-exo-tokens-in-few-cases/603>\
**Category:** Q&A\
**Tags:** natural-language-queries\
**Created:** [May 5, 2024, 4:45am UTC](https://discuss.ego4d-data.org/t/error-in-best-exo-tokens-in-few-cases/603 "2024-05-05T04:45:55Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tarunk23](https://avatars.discourse-cdn.com/v4/letter/t/df788c/32.png) [@tarunk23](https://discuss.ego4d-data.org/u/tarunk23)\
**Post date:** [May 5, 2024, 4:45am UTC](https://discuss.ego4d-data.org/t/error-in-best-exo-tokens-in-few-cases/603/1 "2024-05-05T04:45:55Z")

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I think few of the cases in `atomic_action_description` have a wrong tag for `best_exo` information. for example, for take\_uid `971bf500-87fe-41a1-8ede-5b2eb1e87711`, `gp05` is actually an ego camera, as obtained by info in capture/camera/is\_ego. But the same take in atomic description annotation for annotator `6438364062917988` and annotation\_uid `7acb5c1a-63e6-40a3-b140-c459a4f9f5ba` has `best_exo` as `gp05` for multiple segments - but it is an ego camera. Is this in error or am I misreading something here.

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**Author:** ![suyogjain](https://avatars.discourse-cdn.com/v4/letter/s/7ab992/32.png) [@suyogjain](https://discuss.ego4d-data.org/u/suyogjain)\
**Post date:** [May 17, 2024, 7:59am UTC](https://discuss.ego4d-data.org/t/error-in-best-exo-tokens-in-few-cases/603/2 "2024-05-17T07:59:15Z")

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Hi,

We relied on our annotators to give best exo view. So some errors are expected. Head mounted go-pro is what you are seeing in gp05 which was used only in some specific captures. Probably some of our annotators got confused because our static exo cameras are also go pros. We did explain this scenario to them in our guidelines, but still some human error might have creeped in.