censored.deviation {R0} | R Documentation |
Deviation between theorietical incidence and observed data.
Description
When first records of incidence are unavailable, tries to impute censored cases to rebuild longer epidemic vector.
Usage
censored.deviation(optim.vect, epid, R0, GT)
Arguments
optim.vect |
Vector of two elements |
epid |
Original epidemic vector, output of |
R0 |
Assumed R0 value for the original epidemic vector. |
GT |
Generation time distribution to be used for computations. |
Details
For internal use. Called by impute.incid()
.
This function is not intended for stand-alone use. It computes the difference between theoretical incidence and observed epidemics, for a given vector of initial values. To find the find best-fitting incidence values, this same vector must be optimized, to minimize the value returned by SCE.
Value
The deviation between E(N_{t})
and N_{t}
: sum((E(Nt) - Nt)^2).
Author(s)
Pierre-Yves Boelle, Thomas Obadia