Ultra-processed foods NOVA

Ultra-processed foods

Understanding Ultra-processed foods

Please see the NOVA groups methodology: https://world.openfoodfacts.org/nova
A very good lecture by Chris Van Tullekem (in English)
A very good lecture in French

Nova analysis is behaving weirdly in my country/my language !

Our analysis is following the Scientific paper of Pr. Monteiro, and we use a list of Ultra-processing markers defined in the paper to trigger NOVA 4, we also use categories in some cases as a supplement (like for Sodas where the whole category is NOVA 4).
As a result, issues might arise if the language is not well supported in Open Food Facts.
We should start by easy wins, eg ensuring that the parser behaves to existing rules for Japanese (ie all the things listed at https://jp.openfoodfacts.org/nova) , then we can look for holes in our transcription of the paper.
We should translate the additives at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/additives.txt (very impactful since additives determine the additives classes which are then used for NOVA classification)
We should translate the additives classes mentionned in the methodology at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/additives_classes.txt (very impactful)
We should translate the categories mentionned in the methodology at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/categories.txt
We should translate the ingredients mentionned in the methodology at: https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/ingredients.txt (but very long, so do that for ingredients you stumble upon, or most popular ingredients).
Ensure that https://github.com/openfoodfacts/openfoodfacts-server/blob/main/taxonomies/nova_groups.txt is translated to your language.

How can I help with having NOVA on more products?

Beyond the steps above, you can add more ingredient lists to products when they are missing.
Crop and extract ingredients on many products: https://hunger.openfoodfacts.org/ingredient-detection.
You can also spellcheck existing lists to correct them: https://hunger.openfoodfacts.org/ingredient-spellcheck.