What is a "step"?

[simonbyrne]

The sampler prints out info like "0.19 s/step". I assume that's per MH step, not per leapfrog step? It would be useful to be more precise.

[tpapp]

Good question. It is the time spent building each tree (there are no MH steps in HMC). Perhaps it would be more informative to display

• avg time / leapfrog step
• avg tree depth or size
• avg time / tree

This should be addressed by #30.

[tpapp]

I clarified this in the docs after the API reorg, feeling that this is the best I can do without being too verbose. If you have a suggestion, please feel free to reopen.