![]() ![]() Please note that this type of categorization is sometimes omitted for images, since the vast majority of files on the commons are images of some sort. Category:Media types – This category is the global common root of the media files categorized by the Media TYPE.This type of category is generally added by template. Category:Media by source – This category is the global common root of the media files categorized by the SOURCE, where they come from (books, collections, sites, etc.).This type of category is added by including it in the templates. ALL media files should be categorized under this category with the appropriate license tag. ![]() Category:Copyright statuses – This category is the global common root of the media files categorized by the 'LICENSE.Topical categories shouldn't be included through templates. ALL media files should be categorized under this category for the sake of allowing others to find them by topic. ![]() Category:Topics – This category is the global common root of the media files categorized by the TOPIC.The top-most categories (the ones contained directly in CommonsRoot) divide the category structure by the purpose of the contained categories: Modification: original/modified or modified/original (avoid cyclic structure) – renamed, rebuilt, repurposed or transformed subjects.Agentive and influence relations: (creator/work, device/product, company/product, discipline or profession/their subjects and terms, parent/children, subordination, owner/property, initiator/follower, subject/other subjects dedicated to it or named after it, subject/its duplicate, imitiation, depiction or symbol etc etc.).Timing: when (time/event, time/depicted situation, time of birth, inception or construction, time of death, demolition or termination etc.).Location: where, in…, from… (place/event, place/building, place/exhibit, place/people, country/language, source/work, factory or country/product etc.).Qualitative and general attributes (color, shape, size, ability or disability, nationality, technique, quality, awards…).Meronymy: a part of…, a member of… (typically for geographical division, building/room, device/component etc.).Hyponymy: a sort/kind/type of… (typically in biological taxonomy).The structure uses and combines more types of relation, e. The category structure should reflect a hierarchy of concepts, from the most generic one down to the very specific. Analogic categorization branches should have analogic structure. Categorization structure should be as systematical and unified as possible, local dialects and terminology should be supressed in favour of universality if possible. Identical items should have identical names for all countries and at all levels of categorization. The category name should be unambiguous and not homonymous. We should not classify items which are related to different subjects in the same category. This principle suggests not to combine too many different criteria. ![]() the root category Category:Churches and the root category Category:Russia have a common subcategory Churches in Russia. A category can combine two (or more) different criteria such categories are called "compound categories" or "intersection categories". A category can have more parent categories. The page (file, category) should be put in the most specific category/categories that fit(s) the page (not directly to its parent categories). a category should not contain itself, directly or indirectly). All categories (except CommonsRoot) should be contained in at least one other category. The category structure is (ideally) a multi-hierarchy with a single root category, Category:CommonsRoot. ![]()
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