Introduce knowledge in Hunger Games to help contributors make educated answers

[teolemon]

What

• Display some information about labels and categories using the Partial taxonomy API and the Wikidata API
  • In the Questions game
  • in the Logos games
  • Potentially the image of the label (some labels can be tricky like Green Dot), a link to the Wikipedia page (some categories might be tricky)
• Leverage the facets knowledge panel API to show Wikidata information on detected labels https://github.com/openfoodfacts/Facets-knowledge-panels/
• Now deployed to production: https://facets-kp.openfoodfacts.org/knowledge_panel?facet_tag=category&value_tag=fr%3Afitou

Part of

• 🎯 What can I work on ? #37

[raphael0202]

As of the image of the label, we already provide in Robotoff API the logo image under the image_url field:

{
	"barcode": "8001090177292",
	"type": "add-binary",
	"value": "AB Agriculture Biologique",
	"question": "Le produit a-t-il ce label ?",
	"insight_id": "c4ef22c0-3da2-4590-9fb2-a898eb7da3c9",
	"insight_type": "label",
	"value_tag": "fr:ab-agriculture-biologique",
	"image_url": "https://https://static.openfoodfacts.org/images/lang/fr/labels/ab-agriculture-biologique.74x90.svg",
	"source_image_url": "https://static.openfoodfacts.org/images/products/800/109/017/7292/1.400.jpg"
}

The name is poorly chosen, I was thinking of renaming it reference_image_url. We don't support a lot of labels right now, but it can be expanded (by the way I haven't seen the label image URL in the label taxonomy, where is it stored?)

I would keep all these features on Robotoff to avoid duplicating this on each distribution channel (mobile/web/Hunger Games)

[raphael0202]

I've renamed the image_url field into the more meaningful name ref_image_url.
See https://robotoff.openfoodfacts.org/api/v1/questions/popular?insight_types=label&value_tag=en:eu-organic&count=1

And I've added many label logos as well. This can be used to display reference images.

[teolemon]

Now deployed to production: https://facets-kp.openfoodfacts.org/knowledge_panel?facet_tag=category&value_tag=fr%3Afitou

[teolemon]

@raphael0202 @alexfauquette how about hardcoding a few example based on tag value

if label (en:eu-agriculture,en:eu-non-eu-agriculture): help_tip:"Be particularly careful while validating, since the detection might have been incorrect due to a cropped image. Check whether the value is EU Agriculture, or EU/Non EU Agriculture. If you are in doubt, skip this question"

[alexfauquette]

Sound doable, it will simplify their translation with crowding