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Re: time series analysis - request for ideas? [message #72575] Fri, 24 September 2010 07:58 Go to previous message
Kenneth P. Bowman is currently offline  Kenneth P. Bowman
Messages: 585
Registered: May 2000
Senior Member
In article
<d6ff2568-ef07-4ccb-bbcf-13ea297e1177@n7g2000vbo.googlegroups.com>,
a <oxfordenergyservices@googlemail.com> wrote:

> I'll take a look. One of the issues I have with the datasets is that
> they do not really resemble noise, white or red. There a periods of
> quietness, then periods of plateaus etc. Quite hard to model.

You might need a hierarchical model. That is, a top-level random
process that flips between different the modes of variability, and multiple
low-level processes that simulate the statistics within each
quasi-stationary period.

Ken Bowman
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