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2015 ; 9
(1
): 125-46
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Bootstrapping least-squares estimates in biochemical reaction networks
#MMPMID25898769
Linder DF
; Rempa?a GA
J Biol Dyn
2015[]; 9
(1
): 125-46
PMID25898769
show ga
The paper proposes new computational methods of computing confidence bounds for
the least-squares estimates (LSEs) of rate constants in mass action biochemical
reaction network and stochastic epidemic models. Such LSEs are obtained by
fitting the set of deterministic ordinary differential equations (ODEs),
corresponding to the large-volume limit of a reaction network, to network's
partially observed trajectory treated as a continuous-time, pure jump Markov
process. In the large-volume limit the LSEs are asymptotically Gaussian, but
their limiting covariance structure is complicated since it is described by a set
of nonlinear ODEs which are often ill-conditioned and numerically unstable. The
current paper considers two bootstrap Monte-Carlo procedures, based on the
diffusion and linear noise approximations for pure jump processes, which allow
one to avoid solving the limiting covariance ODEs. The results are illustrated
with both in-silico and real data examples from the LINE 1 gene
retrotranscription model and compared with those obtained using other methods.