Biomathematics Seminar: Biological networks: Real, complex or imaginary?
27 January 2015 14:00 in CM105
Models of complex systems with n components typically have
order n^2 parameters, because each component can potentially interact
with every other. It is usually impractical to measure these
parameters directly, so as an alternative one might choose random
parameter values and study the emergent statistical properties at the
system level. In theoretical ecology this has led to some beautiful
and influential results, but also to some uncomfortable peculiarities.
I use a combination of empirical data and mathematical theory to try
to understand what these randomisation methods are really doing, and
will sketch some ideas which might lead to useful predictions of
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