Akaike weights are calculated based on the relative expected Kullback-Leibler information as specified by Burnham and Anderson (2004).
Usage
aw(object, ...)
# S3 method for mkinfit
aw(object, ...)
# S3 method for mmkin
aw(object, ...)
# S3 method for mixed.mmkin
aw(object, ...)
# S3 method for multistart
aw(object, ...)Arguments
- object
An mmkin column object, containing two or more mkinfit models that have been fitted to the same data, or an mkinfit object. In the latter case, further mkinfit objects fitted to the same data should be specified as dots arguments.
- ...
Not used in the method for mmkin column objects, further mkinfit objects in the method for mkinfit objects.
References
Burnham KP and Anderson DR (2004) Multimodel Inference: Understanding AIC and BIC in Model Selection. Sociological Methods & Research 33(2) 261-304
Examples
# \dontrun{
f_sfo <- mkinfit("SFO", FOCUS_2006_D, quiet = TRUE)
f_dfop <- mkinfit("DFOP", FOCUS_2006_D, quiet = TRUE)
aw_sfo_dfop <- aw(f_sfo, f_dfop)
sum(aw_sfo_dfop)
#> [1] 1
aw_sfo_dfop # SFO gets more weight as it has less parameters and a similar fit
#> [1] 0.5970258 0.4029742
f <- mmkin(c("SFO", "FOMC", "DFOP"), list("FOCUS D" = FOCUS_2006_D), cores = 1, quiet = TRUE)
aw(f)
#> [1] 0.4808722 0.1945539 0.3245740
sum(aw(f))
#> [1] 1
aw(f[c("SFO", "DFOP")])
#> [1] 0.5970258 0.4029742
# }