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

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 keys (properties):

Key (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.

Key (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

Listing products recalls can be an interesting service.

Proposed keys (properties):

Key (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

Annotation

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

Key (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.
`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
`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

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.

Key (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