Data quality issues which can't be fixed

Issues common to all kind of data quality issues

There is no picture of the nutrition table

Eg. https://world.openfoodfacts.org/product/8480000325242/aroma-de-vainilla-hacendado

Solution or workaround: no workaround. Don't copy data from other sources. Our data should be based on our photos.

Action:

• erase all nutrition facts' values.
• remove nutrition facts' picture if it is not correct.

Github issue: -

The picture of the nutrition table is lacking data

Solution or workaround: no workaround. Don't try to put data if there are not displayed on the packaging.

Action: put a hyphen (-) where the data are missing.

Github issue: -

en:nutrition-value-over-105-fruits-vegetables-nuts-estimate-from-ingredients

When the package contains more than one product

When the package contains more than one product, each product can have its own list of ingredients. Then fruits and vegetables estimated value from ingredient goes over 105.

Eg.:

• https://world.openfoodfacts.org/product/3229820141947
• https://world.openfoodfacts.org/product/3608580806141/
• https://world.openfoodfacts.org/product/3021762412464/
• https://world.openfoodfacts.org/product/3560070969852
• https://world.openfoodfacts.org/product/3021762416769

Solution or workaround: none.

Action: the products can be tagged with ingredient_list:multiple.

Github issue: [to be created?]

en:nutrition-value-total-over-105

When the product density is greater than the water

When the product density is greater than the water and the weight displayed for 100ml, the total of the ingredients can be greater than 105.

Eg. https://world.openfoodfacts.org/product/20271343/sirop-d-agave-bio-sonne

Solution or workaround: [to be discussed]

Action: the products can be tagged with nutrition_facts:per_ml

Github issue: [to be created?]

en:energy-value-in-kj-does-not-match-value-computed-from-other-nutrients & en:energy-value-in-kcal-does-not-match-value-computed-from-other-nutrients

When? Sugar or equivalents?

Eg.:

• https://world.openfoodfacts.org/product/3329757003735
• https://world.openfoodfacts.org/product/3165437400001
• https://world.openfoodfacts.org/product/3329757003957/

Solution or workaround: there is no solution. The producer did not mention that the products contains ingredients that should not be counted to compute the energy. For example, if a product is Stevia and contains 99g/100g of carbs, there should not be counted because stevia is not providing any energy.

Action: the product could be tagged with use data_quality:lack_of_data_to_compute_energy ????

Github issue: https://github.com/openfoodfacts/openfoodfacts-server/issues/7789

When? Soup or equivalents?

Eg.:

• https://world.openfoodfacts.org/product/4104420137264
• https://world.openfoodfacts.org/product/8480000073136

Solution or workaround:

Action:

Github issue:

When? Vinegar or equivalents?

Eg. https://world.openfoodfacts.org/product/3182384011012

Solution or workaround:

Action:

Github issue:

When? Tea or equivalents?

Eg. https://world.openfoodfacts.org/product/4056489024354

Solution or workaround:

Action:

Github issue:

When?

Eg. https://world.openfoodfacts.org/product/4056489123514/

Solution or workaround:

Action:

Github issue:

en:energy-value-in-kcal-does-not-match-value-in-kj

When energy values are low (1-10 Kcal)

When energy values are low, there are often matching issues between the energy in Kcal and KJ. This often because producers are rounding the values.

Eg.

• https://world.openfoodfacts.org/product/3502110008459: In this example, 1 Kcal (rounded) => 6 KJ. Because 6 / 4.2 = 1.428, the producer is probably rounding 1.42 to 1.

Solution or workaround: use the values per serving if the serving is higher than 100g/100ml.

Action: -

Github issue: energy-value-in-kcal-does-not-match-value-in-kj: false positive for low values

When?

Error maybe?

Eg.

• https://world.openfoodfacts.org/product/3770014034205

Solution or workaround: ?

Action: -

Github issue: energy-value-in-kcal-does-not-match-value-in-kj: false positive for low values