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Derived data

A data element or dataset adapted from other data sources using a mathematical, logical, or other type of transformation, e.g. arithmetic formula, composition, aggregation. See Value-added data.

OECD Glossary of Statistical Terms
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Not really

No, derived data does not have to be an exactly-defined transformation. A remix of a song is artistic, yet is still derived. In fact, a useful synonym is 'remixed'.

Better to say that it is data that is a transformation of other data. The key point is that normally you infringe copyright and database rights by making a derivation of another's data and distributing it. However, if it is licensed openly then you are allowed, if not encouraged to derive and republish.

In the world of open data derivatives can include: cleaned up data, data mixed with other data, graph/map/visualization of the data.

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Derived and value added not the same?

Technically, presenting data in column percentage form, including ratios or sticking in a map, is including derived data.  Yes, it does add some value (or why bother doing it) but I can't help feeling it is a bit precious to equate this to value added data.  Instinctively I think of value adding as rather more dramatic, for example through linking datasets together and making the results publicly available.

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