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| Some important things to know: | | Some important things to know: |
− | * Quality does not make sense for itself. | + | * Quality does not make sense for itself: quality depends on usages. |
− | * Quality depends on usages.
| |
| * No database at all can pretend to zero-default. | | * No database at all can pretend to zero-default. |
− | * With more than 1 200 000 products, there are quality concerns: our goal is to lower the impacts of the issues. | + | * With more than 1 600 000 products, there are quality concerns: our goal is to lower the impacts of the issues. |
| | | |
| == Data quality: how to help? == | | == Data quality: how to help? == |
| + | |
| + | === Nutrition values issues === |
| + | Open Food Facts identifies some issues related to nutrition values. Some of them are '''very easy to solve''': |
| + | * [https://world.openfoodfacts.org/data-quality/energy-value-in-kcal-greater-than-in-kj Energy value in kcal greater than in kJ] |
| + | * [https://world.openfoodfacts.org/data-quality/nutrition-value-over-105-salt Nutrition Salt is higher than 100g per 100g] |
| + | * [https://world.openfoodfacts.org/data-quality/nutrition-value-over-105-carbohydrates Carbohydrate is higher than 100g per 100g] |
| + | * [https://world.openfoodfacts.org/data-quality/nutrition-value-over-105-fat Fat is higher than 100g per 100g] |
| | | |
| === Nutri-Score quality === | | === Nutri-Score quality === |
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| There are many reasons why it can differ: | | There are many reasons why it can differ: |
| * the label in Open Food Facts does not represent the label printed on the package (easy to solve) | | * the label in Open Food Facts does not represent the label printed on the package (easy to solve) |
− | * the label is correct but our calculation doesn't provide the same result: | + | * the label is correct, but our calculation doesn't provide the same result: |
| ** check the category, | | ** check the category, |
| ** then check the nutrition facts: the issue is sometimes the lack of "fibers" information or the lack of "Fruits, vegetables, nuts and rapeseed, walnut and olive oils" percentage. | | ** then check the nutrition facts: the issue is sometimes the lack of "fibers" information or the lack of "Fruits, vegetables, nuts and rapeseed, walnut and olive oils" percentage. |
− | * it can be a software issue (quite rare but possible) | + | * it can be a software issue (quite rare but possible). |
| + | {| class="wikitable" |
| + | |+ |
| + | !Issue |
| + | !Rationale |
| + | !How to fix |
| + | |- |
| + | |The Nutri-Score displayed by the producer is different from the Nutri-Score Open Food Facts computes |
| + | |The label in Open Food Facts does not represent the label printed on the package |
| + | |Change the label |
| + | |- |
| + | |idem |
| + | |The category is wrong |
| + | |Change the category and see if it's modifying the Nutri-Score |
| + | |- |
| + | |idem |
| + | |The nutrition facts are wrong |
| + | | |
| + | * Update it |
| + | * If the product's nutrition facts has evolved from a previous version, you can add it to the [[Verification/Noteworthy Products#Products with a Nutri-Score that has improved over time|products whose recipe has changed]] or even better, if it's the case, the [[Verification/Noteworthy Products#Products with a Nutri-Score that has improved over time|products with a Nutri-Score that has improved over time]]. |
| + | |} |
| | | |
− | === Nutrition values issues === | + | === Cleaning up the consequences of an old Android bug === |
− | Open Food Facts identifies some issues related to nutrition values. We should take care of it:
| + | The word "Loading…" replaced the correct product name. 99% of phones have been updated with the fix, but we still have some unfixed products. |
− | * [https://world.openfoodfacts.org/data-quality/nutrition-value-over-105-salt Nutrition Salt is higher than 100g per 100g] | + | * [https://world.openfoodfacts.org/cgi/search.pl?action=process&search_terms=Caricamento%E2%80%A6&sort_by=unique_scans_n&page_size=24&page=1&sort_by=unique_scans_n Italian] |
− | * [https://world.openfoodfacts.org/data-quality/nutrition-value-over-105-carbohydrates Carbohydrate is higher than 100g per 100g] | + | * [https://world.openfoodfacts.org/cgi/search.pl?action=process&search_terms=Loading%E2%80%A6&sort_by=unique_scans_n&page_size=24&page=1&sort_by=unique_scans_n English] |
− | * [https://world.openfoodfacts.org/data-quality/nutrition-value-over-105-fat Fat is higher than 100g per 100g] | + | * [https://world.openfoodfacts.org/cgi/search.pl?action=process&search_terms=chargement%E2%80%A6&sort_by=unique_scans_n&page_size=24&page=1&sort_by=unique_scans_n French] |
| + | * [https://world.openfoodfacts.org/cgi/search.pl?search_terms=laden%E2%80%A6&search_simple=1&action=process German] |
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| === Non-Food Products === | | === Non-Food Products === |