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Taxonomy is the practice and science of classification. The word finds its roots in the Greek τάξις, taxis (meaning 'order', 'arrangement') and νόμος, nomos ('law' or 'science'). Taxonomy uses taxonomic units, known as taxa (singular taxon).

In addition, the word is also used as a count noun: a taxonomy, or taxonomic scheme, is a particular classification ("the taxonomy of ..."), arranged in a hierarchical structure. Typically this is organized by supertype-subtype relationships, also called generalization-specialization relationships, or less formally, parent-child relationships. In such an inheritance relationship, the subtype by definition has the same properties, behaviors, and constraints as the supertype plus one or more additional properties, behaviors, or constraints. For example, car is a subtype of vehicle. So any car is also a vehicle, but not every vehicle is a car. Therefore, a type needs to satisfy more constraints to be a car than to be a vehicle. ... The creation of taxonomies is very important in safety science. For example there exist numerous taxonomies to classify and analyze human error and accident causes. ... more at >>> http://en.wikipedia.org/wiki/Taxonomy

20091202_jfa_30x48.jpg Jfayel point of view...

Taxonomy is "cold" data, like pure numbers are... could be sometimes fairly wrong to follow

Folksonomy is "hot" data, data human brain excels to deal with and where 2.0 revolution helps so much...




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