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=== Categories ===
 
=== Categories ===
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The categories taxonomy is more complicated as there is not a clear relationship with what is found on the product. Assigning the correct is a combination of interpreting marketing names, ingredient lists and labels found on the packaging. Often also knowledge of the current taxonomy and its hierarchy is required. And their is also a relationship with legislation, as naming a product is not always free.
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There are some basic principles behind the hierarchy found in the taxonomy;
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* ''understandable'' - no abstract categories that a user does not understand or encounters in the supermarket aisles;
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* ''ingredient driven'' - the ingredients determine to a large extent the category;
    
== Examples ==
 
== Examples ==
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