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?]
When the data quality error is a bug from Open Food Facts (product opener)
Sometimes the data quality error is a parsing bug.
Eg. :
- https://world.openfoodfacts.org/cgi/product.pl?type=edit&code=3038354191904#ingredients
- https://world.openfoodfacts.org/product/3281780096040
Solution or workaround: none.
Action: the product can be tagged with Folksonomy Engine: data_quality:product_opener_issue => yes
Github issue: https://github.com/openfoodfacts/openfoodfacts-server/issues/7816
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
https://world.openfoodfacts.org/product/7501088011375
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/
- https://world.openfoodfacts.org/product/0013200000008
- https://world.openfoodfacts.org/product/3256223661215
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 Folksonomy Engine: 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? Tea or equivalents?
Eg. https://world.openfoodfacts.org/product/4056489024354
Solution or workaround:
Action:
Github issue:
When? Lemon juices?
It seems that many lemon juices are reporting errors: more than 225 as of 2022-12-15, which is nearly half of all the lemon juices (577).
- Lemon juice category: https://world.openfoodfacts.org/category/lemon-juice
- Data quality errors related to lemon juice category: https://world.openfoodfacts.org/category/lemon-juice/data-quality-errors
Eg.
- https://world.openfoodfacts.org/product/8009490000561/jus-de-citron-siracuse
- https://world.openfoodfacts.org/product/8009490001087/jus-de-citron-siracuse
- https://world.openfoodfacts.org/product/26001142
Solution or workaround:
Action:
Github issue:
When? Vinegar or equivalents?
It seems that many vinagers are reporting errors: more than 608 as of 2022-12-15, which is nearly 20% of all the vinegars (3528).
- https://world.openfoodfacts.org/category/vinegars (3528 products)
- https://world.openfoodfacts.org/category/vinegars/data-quality-errors (608 products)
Eg. https://world.openfoodfacts.org/product/3182384011012
Solution or workaround:
Action:
Github issue:
When? Chewing gum or equivalents?
Eg.
- https://world.openfoodfacts.org/product/26038360
- https://world.openfoodfacts.org/product/27031247
- https://world.openfoodfacts.org/product/4009900517430/extra-professional-white-strawberry-wrigley
Solution or workaround:
Action:
Github issue:
When?
Eg.
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.
- https://world.openfoodfacts.org/product/3564700460887
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.
Solution or workaround: ?
Action: -
Github issue: energy-value-in-kcal-does-not-match-value-in-kj: false positive for low values
en:energy-value-in-kcal-does-not-match-value-computed-from-other-nutrients
When it is a beer?
Eg.
Solution or workaround: delete?
Action: -
Github issue: