# BIDS Derivatives final request for comments

**URL:** <https://mne.discourse.group/t/bids-derivatives-final-request-for-comments/2200>\
**Category:** Mailing List Archive (read-only)\
**Tags:** list-archive\
**Created:** [May 25, 2020, 4:56pm UTC](https://mne.discourse.group/t/bids-derivatives-final-request-for-comments/2200 "2020-05-25T16:56:23Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\
**Post date:** [May 25, 2020, 4:56pm UTC](https://mne.discourse.group/t/bids-derivatives-final-request-for-comments/2200/1 "2020-05-25T16:56:23Z")

</div>

External Email - Use Caution

The BIDS community is preparing to merge the Common Derivatives extension. The updated draft is available for review at [https://bids-specification.readthedocs.io/en/common-derivatives/](https://bids-specification.readthedocs.io/en/common-derivatives/), and comments and suggestions may be submitted on GitHub at [https://github.com/bids-standard/bids-specification/pull/265](https://github.com/bids-standard/bids-specification/pull/265).

The scope of this extension is establishing a set of common principles for organizing derivative datasets, dataset-level metadata, and naming conventions for minimally preprocessed files. Additionally, some common imaging derivatives (e.g., brain masks) have been specified. More detailed modality-specific derivatives are scheduled for inclusion in the next few months.

The final review process entails a minimum of one week for public comment, with a possibility of extension for unresolved discussion. Once public comments are concluded, there will be a one week freeze, during which only critical issues will be considered. (For more details on the release protocol, see [https://github.com/bids-standard/bids-specification/blob/master/Release\_Protocol.md.)](https://github.com/bids-standard/bids-specification/blob/master/Release_Protocol.md.))

We look forward to hearing your feedback!

Franklin  
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