Folksonomy Engine/Uses cases

What do Folksonomy Engine makes possible? We list here some use cases. These ones are a good way to test how Folksonomy Engine can work.

For the property names, we use the same convention as OpenStreetMap: minus letters with underscores for spaces. Eg. seen_on_tv

2024 note

• We will need a dedicated UI (both input and output) on top of the Folksonomy Engine to really develop usages. -- Pierre

Seen on TV (advertising)

What kind of products are most seen on TV? Can we compare these products with the rest of their category? Is it possible to collect those products without barcode?

Proposed properties:

Property	Values	Description	Type	Comments
seen_on_tv	yes or no	Is this product have been seen on TV? No value doesn't mean it can't be yes or no, it's just unknown.	closed list (yes or no)
seen_on_tv:date	Examples: 2020 2020-01 2020-01/2020-06 for an interval	The date when it has been seen on TV. An interval is a better information, but a fixed date is a good first step.	ISO 8601 format	Entered manually or by a date picker
seen_on_tv:tv_channels	Examples: France: M6 UK: BBC1	On what channel?	open list	TODO: see if we can reuse wikidata TV channels

Products with film- or cartoon characters

These data can represent some interest. The characters can infer the target of the product. It can be interesting to understand if certain types of products are targeting special public, kids for example.

Property	Values	Description	Type	Comments
packaging:has_character	yes or no	Is there a film- or cartoon character on this product? No can be interesting to share. Lack of value doesn't mean it can't be yes or no, it's just unknown.	closed list (yes or no)
packaging:character:date	Examples: 2020 2020-01 2020-01/2020-06 for an interval	The date when it has been seen on the packaging. An interval is a better information, but a fixed date is a good first step.	ISO 8601 format	Entered manually or by a date picker
packaging:character	Examples: Hulk Star Wars' stormtrooper	The common name of the character.	open list
packaging:character:wikidata	Example: Q51785 (Star Wars' Stormtrooper)	The wikidata reference, to disambiguate the character.	wikidata

Recalled products

(Note: please see main article: ProductRecalls)
Some products need to be recalled for various reasons:

• an important information is lacking on the packaging: e.g., the existence of an allergen, the product is not suited for children, etc.
• the product is not good for consumption: bacteria, wrong recipe, etc.
• the product does respect local laws
• etc.

Producers and authorities are providing this kind of information. Listing products recalls can be an interesting service to provide:

• people might want to verify each product they consume
• sometimes people have a vital reason to control each product (severe allergies, etc.)
• people have heard that some lots of their favorite product has been recalled and they just want to check they don't owned one of them
• etc.

Proposed properties:

Property	Values	Description	Type	Comments
recalled_product	yes, no	The product has been recalled or not. No value doesn't mean it can't be yes or no, it's just unknown.	closed list (yes or no)
recalled_product:date	Examples: 2020 2020-01 2020-01/2020-06 for an interval	The date when it has been recalled.	ISO 8601 format	Entered manually or by a date picker
recalled_product:comments		Any more information can be put here. Eg. the serial numbers of the product.	Free text
recalled_product:link	Examples: https://www.fda.gov/food/alerts-advisories-safety-information/fda-advises-consumers-avoid-green-gorilla-root-juice-due-potentially-harmful-undeclared-ingredient https://rappel.conso.gouv.fr/fiche-rappel/383/Interne	A link to the official source of the recall.	link	Possibility of many links?

Some official websites dealing with product recalls:

• Europe:
  • European Union website: https://webgate.ec.europa.eu/rasff-window/screen/list
  • France: https://rappel.conso.gouv.fr/
• USA:
  • FDA RSS: https://www.accessdata.fda.gov/scripts/ires/rss/products/rss_food.xml

See also issues related to product recalls on Open Food Facts server: https://github.com/openfoodfacts/openfoodfacts-server/labels/Products%20Recalls

Annotation

Providing further information about products for other contributors, and even for users in some cases. Here are some proposed properties:

Property	Values	Description	Type	Comments
fixme	yes or no	Does this product's data has to be fixed?	closed list (yes or no)	See fixme tag in OpenStreetMap database.
fixme:description
producer_data_issue	Any string or sentence. Examples: "fat typo" "salt missing"	Some data printed by the producer on the product are wrong, without any doubt.
multiple	Examples: yes 2 3 many	When a barcode is used for different products.	open list
data_quality:robotoff_issue	yes or no	Did robotoff make a wrong prediction?
data_quality:robotoff_issue:product_version	The product version (a number). Eg. 57

Reformulated product

(Note: please see main article: Modified products)
It's interesting to know which products' formula and ingredients has evolved by the time.

Property	Values	Description	Type	Comments
reformulated	yes or no	Did the product's formula and ingredients evolved over the time.
reformulated:description
reformulated:date	Examples: 2020 2020-01 2020-01/2020-06 for an interval	The date when it has been recalled.	ISO 8601 format	Entered manually or by a date picker

Links to other references

Linking Open Food Facts data to other references can help to create new usages and new knowledge.

Property	Values	Description	Type	Comments
wikipedia	Examples: https://en.wikipedia.org/wiki/Nutella	The specific wikipedia URL corresponding to this product. Users can add the two letter language to precise a page in a specific language.	URL	Should be controlled.
wikidata	Example: Q212193 (for Nutella)	The wikidata reference, to allow links with other data.	wikidata

Nutri-Score experiment

(Note: please see main article: Nutri-Score)
In 2015, Open Food Facts was used to experiment early versions of the Nutri-Score. To help the experimentation, some products have been labelled "Nutriscore Experiment". These label were not printed on the product, it was only a convenient way to group these products. Now the experiment is finished, there's no need to use this label anymore. In fact, it is now counterproductive to stay as a label:

• it is confusing with the current Nutri-Score label
• it is proposed automatically by the "suggest as you type" feature when a user wants to add "Nutri-Score" as a label, augmenting the confusion.

All the Nutri-Score Experiment label will be at a better place in Folksonomy Engine.

Property	Values	Description	Type	Comments
nutriscore_experiment	yes	Was this product part of the experiment?	unique value	There's no need to use no as it's the default case.
nutriscore_experiment:grade	A, B, C, D or E. Example: C	The Nutri-Score grade of the product at the time of the experiment.	closed list

Potentially dangerous products

This case is interesting but complicated. We first have to investigate what are potentially dangerous products.