Signficance Of High Number Of Iterations

[munchkin]

In the context of solving the optimization problem exactly what is the significance of a relatively higher number of iterations prior to returning an alpha vector? Does this mean that the data set is ill-conditioned in some way for the given C value? The iteration count varies widely during each of the runs for the cross validation. Thanks for your attention.

[htlin]

Originally Posted by munchkin

In the context of solving the optimization problem exactly what is the significance of a relatively higher number of iterations prior to returning an alpha vector? Does this mean that the data set is ill-conditioned in some way for the given C value? The iteration count varies widely during each of the runs for the cross validation. Thanks for your attention.

Yes, it means that the data set is ill-conditioned. Usually the physical meaning is that the rank of is not enough (making it hard to separate the examples) and is too large (insisting on separating). Hope this helps.

[munchkin]

Yes. That is very helpful. Thanks!