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Bradley Mitchell

Metcalfe's Law for Computer Networks

By , About.com Guide   August 24, 2009

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Robert Metcalfe - National Medals of Science and Technology A pioneer in creating computer networking technology, engineer Robert Metcalfe developed a theory regarding the usefulness of networks that became both popular and controversial during the 1990s and is still debated today. Metcalfe's Law claims the potential value of a communications network increases exponentially with its size. Specifically, it proposes that for a network with 'n' endpoints (think of these as devices, or people), the inherent usefulness of this network is on the order of 'n' times 'n' (O(n-squared)) or O(n2)).

Metcalfe's Law was intended to be an approximation and a relative measure of value for comparing two networks or the growth of one. For example, under this Law a network with 10 endpoints (value = 10x10=100) is approximately 4 times more useful than a network half the size (5 endpoints with value 5x5=25). While it makes intuitive sense, and may work as a measure of theoretical maximum value, some other experts have studied the topic and proposed that Metcalfe's Law may significantly over-estimate the real-world value of network size and growth. I tend to agree. What do you think?

More - Metcalfe's Law Is Wrong (spectrum.ieee.org)
See also - What Is Ethernet?

Robert Metcalfe Receives National Medals of Science and Technology (2005) - Photo: Mark Wilson / Getty Images
Comments
August 28, 2009 at 8:41 am
(1) Mwesigwa Tony Joshua :

well i believe its a good innovation and a big leap in the entertainment technology.

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