NESSUS/FORM 3

Contrasting the Statistical with the Mathematical
Properties of NESSUS/FORM

Page 3 of 4

Figure 4 superimposes the situation as seen internally by NESSUS with the true condition.

nessus4.gif (11585 bytes)

Notice that the true value of the converged MPP^(*) (dotted red arrow) is much closer to the true origin (has a higher probability of failure) than the converged MPP (solid blue arrow) because of the location and scaling based on parameter estimates, rather than true, but unknown parameter values.

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(*) The true value of the converged MPP does not have the anticipated probability of failure that the true true MPP (red dot) has. Confusing, isn't it?

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