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Table 2 Brief overview of different types of network concepts.

From: Understanding network concepts in modules

Input Matrix

Type of Concept

Example: Connectivity

A - I

fundamental

Connectivity i (A - I) = ∑j≠ia ij

A CF - I = CF CFÏ„- diag(CF2)

CF-based

Connectivity i (A CF - I) = CF i ∑j≠iCF j

ACF,app= CF CFÏ„

approximate CF-based

Connectivity i (A CF , app ) = CF i ∑ j CF j

  1. A network concept arises by evaluating a network concept function on a special type of input matrix. We assume that the diagonal elements of the matrix A - I are 0.
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BMC Systems Biology

ISSN: 1752-0509

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