Draft:Pcodec

Review waiting, please be patient.

This may take 3 months or more, since drafts are reviewed in no specific order. There are 3,151 pending submissions waiting for review.

If the submission is accepted, then this page will be moved into the article space.
If the submission is declined, then the reason will be posted here.
In the meantime, you can continue to improve this submission by editing normally.

Where to get help

If you need help editing or submitting your draft, please ask us a question at the AfC Help Desk or get live help from experienced editors. These venues are only for help with editing and the submission process, not to get reviews.
If you need feedback on your draft, or if the review is taking a lot of time, you can try asking for help on the talk page of a relevant WikiProject. Some WikiProjects are more active than others so a speedy reply is not guaranteed.

How to improve a draft

Wikipedia:Contributing to Wikipedia – a basic overview on how to edit Wikipedia.
Help:Wikitext – how to use the markup
Help:Referencing for beginners – how to include references
Wikipedia:Article development – how to develop your article
Wikipedia:Writing better articles – how to improve your article
Wikipedia:Verifiability – make sure your article includes reliable third-party sources

You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article.

Improving your odds of a speedy review

To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags.

Add tags to your draft

Editor resources

Easy tools: Citation bot (help) | Advanced: Fix bare URLs

Reviewer tools

Instructions · What links here · Pcodec (talk: + · bio) · (log) · Copyvios report · reFill · Citation Bot · (Search: Google, Wikipedia) · Submitted 40 days ago by Scenichill (talk: D · +) · Last edited 40 days ago by Scenichill

Warning: The page Pcodec redirects to Emcodec. Please ensure it is not a copy or that this page is located at the correct title.

Submission declined on 6 April 2025 by Sophisticatedevening (talk).

This submission is not adequately supported by reliable sources. Reliable sources are required so that information can be verified. If you need help with referencing, please see Referencing for beginners and Citing sources.

If you would like to continue working on the submission, click on the "Edit" tab at the top of the window.
If you have not resolved the issues listed above, your draft will be declined again and potentially deleted.
If you need extra help, please ask us a question at the AfC Help Desk or get live help from experienced editors.
Please do not remove reviewer comments or this notice until the submission is accepted.

Where to get help

If you need help editing or submitting your draft, please ask us a question at the AfC Help Desk or get live help from experienced editors. These venues are only for help with editing and the submission process, not to get reviews.
If you need feedback on your draft, or if the review is taking a lot of time, you can try asking for help on the talk page of a relevant WikiProject. Some WikiProjects are more active than others so a speedy reply is not guaranteed.

How to improve a draft

Wikipedia:Contributing to Wikipedia – a basic overview on how to edit Wikipedia.
Help:Wikitext – how to use the markup
Help:Referencing for beginners – how to include references
Wikipedia:Article development – how to develop your article
Wikipedia:Writing better articles – how to improve your article
Wikipedia:Verifiability – make sure your article includes reliable third-party sources

You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article.

Improving your odds of a speedy review

To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags.

Add tags to your draft

Editor resources

Easy tools: Citation bot (help) | Advanced: Fix bare URLs

Declined by Sophisticatedevening 41 days ago. Last edited by Scenichill 40 days ago. Reviewer: Inform author.

This draft has been resubmitted and is currently awaiting re-review.

Pcodec or Pco is a lossless compression format and algorithm for numerical data. Its is open sourced under Apache 2.0 License. Its stated goal is to compress with high compression ratio and moderately fast speed. ^[1]

Pco differs from LZ77 and LZ78 compression in that it applies "binning" to numerical values instead of matching exact sequences of bytes. These bins are then entropy coded. ^[1]

Pco is the remake of an earlier codec named Quantile Compression or q_compress. Work on q_compress began in mid 2021, and Pco's first stable version was released in November 2023. ^[2] ^[3] Pco is used in other wrapping data formats such as Zarr. ^[4]

References

^ ^a ^b "pcodec/pcodec: Lossless codec for numerical data". github.com. Retrieved 2025-04-06.
^ "basic algorithm - mwlon/pcodec". github.com. 2021-05-31. Retrieved 2025-04-06.
^ "crates.io: Rust Package Registry". crates.io. 2023-11-28. Retrieved 2025-04-06.
^ "API reference - numcodecs 0.15.1 documentation". readthedocs.io. Retrieved 2025-04-06.

[github-1] "pcodec/pcodec: Lossless codec for numerical data". github.com. Retrieved 2025-04-06.

[2] "basic algorithm - mwlon/pcodec". github.com. 2021-05-31. Retrieved 2025-04-06.

[3] "crates.io: Rust Package Registry". crates.io. 2023-11-28. Retrieved 2025-04-06.

[4] "API reference - numcodecs 0.15.1 documentation". readthedocs.io. Retrieved 2025-04-06.

[1]

[2]

[3]

[4]