Editing Data set (section)

{{for-multi|the type of file|Data set (IBM mainframe)|the communications device|Dataset (device)}}
{{short description|Collection of data}}
[[File:Iris dataset scatterplot.svg|thumb|right|Various plots of the multivariate data set [[Iris flower data set|''Iris'' flower data set]] introduced by [[Ronald Fisher]] (1936).<ref name="fisher36"/>]]
A '''data set''' (or '''dataset''') is a collection of [[data]]. In the case of [[tabular data]], a data set corresponds to one or more [[table (database)|database tables]], where every [[column (database)|column]] of a table represents a particular [[Variable (computer science)|variable]], and each [[row (database)|row]] corresponds to a given [[Record (computer science)|record]] of the data set in question. The data set lists values for each of the variables, such as for example height and weight of an object, for each member of the data set.  Data sets can also consist of a collection of documents or files.<ref name="Editorial">{{cite journal | last1 = Snijders | first1 = C. | last2 = Matzat | first2 = U. | last3 = Reips | first3 = U.-D. | year = 2012 | title = 'Big Data': Big gaps of knowledge in the field of Internet | url = http://www.ijis.net/ijis7_1/ijis7_1_editorial.html | journal = International Journal of Internet Science | volume = 7 | pages = 1–5 | access-date = 2017-02-10 | archive-date = 2019-11-23 | archive-url = https://web.archive.org/web/20191123051001/http://www.ijis.net/ijis7_1/ijis7_1_editorial.html | url-status = dead }}</ref>

In the [[open data]] discipline, a dataset is a unit used to measure the amount of information released in a public open data repository.  The European [[data.europa.eu]] portal aggregates more than a million data sets.<ref>{{Cite web|url=http://www.europeandataportal.eu/data/en/dataset|title=European open data portal|website=European open data portal|publisher=European Commission|access-date=2016-09-23}}</ref>