The HPC Productivity folks are thinking about the application of markov models to modelling HPC workflow. I found a very easy to read introduction to this technique:
<http://www.comp.leeds.ac.uk/roger/HiddenMarkovModels/html_dev/main.html>
I think there are some very interesting implications for software project telemetry and our overall approach to use of sensor data.
Take a look if you have time and let me know what you think.
Cheers, Philip
