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Dubliners110 (talk | contribs) m →See also: Added "degeneracy" to the list as it is closely related to the continuous core-periphery model mentioned in the entry |
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{{Underlinked|date=July 2015}}{{lead rewrite|date=October 2018}}
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'''Core periphery structure''' is based on [[Immanuel Wallerstein|Immanuel Wallerstein's]] [[world-systems theory]].{{citation needed|date=February 2019}} He formulated the chart in the 1980s. Core are the MEDCs in the world and the periphery the major section are the LEDCs that are not as developed as MDCs but are very slowly starting to develop.{{Clarify|date=August 2019}}
[[File:Core-Periphery Network.png|thumb|A Network with an idealized core–periphery structure]]
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===Continuous model===
This model allows for the existence of three or more partitions of node classes. However, including more classes makes modifications to the discrete model more difficult.{{needs clarification|date=August 2019}} Borgatti & Everett (1999) suggest that, in order to overcome this problem, each node be assigned a measure of ‘coreness’ that will determine its class. Nevertheless, the threshold of what constitutes a high ‘coreness’ value must be justified theoretically.
==Discussion==
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