Swing Shift

Very nice implementation and very fast. The setting these three parameters seems a bit mysterious to me. How would one interpret them in order to properly instantiate a model?

I added your Zipf cost to a classroom demo I had (https://github.com/christophsk/segment-string) and found that the string "_iamnotanumberiamaperson_", segments as "_iam not a number iam a person_" instead of "_i...