campy {tscount} | R Documentation |
Campylobacter Infections Time Series
Description
Time series with the number of cases of campylobacter infections in the north of the province Quebec (Canada) in four week intervals from January 1990 to the end of October 2000. It has 13 observations per year and 140 observations in total. Campylobacterosis is an acute bacterial infectious disease attacking the digestive system.
Usage
campy
Format
A time series of class "ts"
.
Source
Ferland, R., Latour, A. and Oraichi, D. (2006) Integer-valued GARCH process. Journal of Time Series Analysis 27(6), 923–942, http://dx.doi.org/10.1111/j.1467-9892.2006.00496.x.
See Also
ecoli
, ehec
, influenza
, measles
in this package, polio
in package gamlss.data
Examples
plot(campy)
#Fit the INGARCH model used in Ferland et al. (2006):
campyfit <- tsglm(ts=campy, model=list(past_obs=1, past_mean=c(7,13)))
summary(campyfit)
plot(campyfit)
#Note that these parameter estimations differ from those obtained by
#Ferland et al. (2006). This might be due to a different initialisation
#of pre-sample values and different optimisation algorithms (they use
#Microsoft Excel Solver Macro).
[Package tscount version 1.4.3 Index]