text: Chapter 6
  Figure 6-11. Example activities matrix.
  Link Diagrams
  6-76. Often, the link analysis is the most effective method to show the connections between people,
  groups, or activities. An example of a link diagram is shown in Figure 6-13. The analyst can easily
  determine from the diagram that A knows B, and that B knows C and D. B is suspected of knowing E,
  and C knows D, B, and E. Although the same information could be shown on a matrix, it may be easier
  to understand when shown on a link analysis diagram. As situations or investigations become more
  complex, the ease in understanding a link analysis diagram becomes more apparent. In almost all cases, the
  available information is first shown and analyzed on both types of matrixes, which are then used
  to construct a link analysis diagram for further analysis.