Breidbart Index - Breidbart-Index, Version 2 (BI2)

Breidbart-Index, Version 2 (BI2)

A more aggressive criterion, Breidbart Index Version 2, has been proposed. The BI2 is defined as the sum of the square root of n, plus the sum of n, divided by two. A single message would only need to be crossposted to 35 newsgroups to breach the threshold of 20.

Formula

Example

Two copies of a posting are made, one to 9 groups, and one to 16.

$\frac{\sqrt{9} + \sqrt{16} + 9 + 16}{2} = \frac{3 + 4 + 9 + 16}{2} = \frac{32}{2} = 16$

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