Data quality: Difference between revisions

Data quality at Open Food Facts is guided by '''3 main principles''':

* No database at all can pretend to be zero-defect. With more than 2,900,000 products, there are quality concerns. Data quality is done on a "best effort" basis. The effort on data quality includes measuring quality, setting objectives, publishing them and implementing them.

These principles and our high level objectives are described in the following short document, which you should read at first if you want to go further:

https://link.openfoodfacts.org/data-quality  

== Measures ==

We have started an initiative to measure and publish continuously some data quality stats. We have created a specific page dedicated to [[data quality stats]].

== How to help? ==

Anyone can help to improve the data quality.

=== 1. Adding photos ===

Photos allow other contributors to verify and, if necessary, fix the issues. As a contributor, this is the first step to improve data quality.

=== 2. Fixing a product issue ===

As in Wikipedia, anyone can edit at Open Food Facts. If you see an error, don't hesitate to fix it! If you're afraid or hesitating, you can ask your questions on [https://forum.openfoodfacts.org the forum] or in our [https://slack.openfoodfacts.org/ Slack space].

 

=== 3. Report an issue related to many products or related to data quality ===

 

* You can report the issue on [https://forum.openfoodfacts.org the forum] or in our [https://slack.openfoodfacts.org/ Slack space].

* You can also directly [https://github.com/openfoodfacts/openfoodfacts-server/issues/new/choose report the issue directly on our bug reporting tool].

 

=== 4. Help improve data quality with specific missions ===

If you want to further, you can check [[Data quality missions|specific missions related to data quality]]. Some missions are fast and easy to achieve.

 

=== 5. Joining the effort to improve data quality ===

We organize a public monthly meeting dedicated to data quality. It takes place every first Tuesday of the month at 6pm CET, see [[Events|Open Food Facts' events]] to find the next meetings in our community calendar.

 

If you have '''technical skills''', you can also do your part for data quality. Head over to [https://github.com/openfoodfacts/openfoodfacts-server/issues/5538 our tracking issue on GitHub]

 

* Private channels with 3rd party apps for moderation

 

* We silently discard/rewrite some edits in specific conditions when we have no other solutions

 

 

[to be described]

 

* A knowledge panel showing all the potential data quality issues related to the product.

 

 

[https://mirabelle.openfoodfacts.org/-/data-quality-daily/subscribe Data quality daily] is a daily email suggesting you 3 Open Food Facts products to fix.

 

* this is ''your'' mission, these 3 products are not sent to other users

* these products should be fixable (photos)

* products' popularity is taken into account (number of scans last year): your fixes have a higher impact

* you also get nice daily stats about data quality, including a contributors' board.

 

Don't hesitate to [https://mirabelle.openfoodfacts.org/-/data-quality-daily/subscribe register], you can unsubscribe at any time.

 

[https://github.com/openfoodfacts/power-user-script Power User Script] is a user script for your browser, to empower Open Food Facts contribution. It offers many enhancements for contributors, and many features dedicated to data quality.

 

 

=== Where do the errors come from? ===

Thanks to Mirabelle tool, we have created the list of contributors errors' count: https://mirabelle.openfoodfacts.org/_memory/errors_from

 

We can monitor this list from time to time, to prevent some bad data from apps or users.

 

 

There are more than 180 data quality facets. You can consult the [[List of data quality errors (generated)|list of data quality errors]].

 

 

== Get in touch ==

| 2    =  [https://openfoodfacts.slack.com/messages/C03H290LF/ #quality-data]