[R] HOW to determine the number of components of the mixture model stratfied by age
lybaomc
lybaomc at gmail.com
Thu Oct 29 03:41:41 CET 2009
DOES NOBODY KNOW?
HELP!
lybaomc wrote:
>
> Hi,all
>
> with my data,there are more than 1000 quantitative results of antibody
> concentrations, there may be 2 components(positive and negative), or 3
> components (may be strong positive, positive, and negative), or 4-6
> components. Could you tell me how to determine the number of components of
> the mixture model? the "anova.mix" in mixdist of the R software seems not
> work.
>
> my data is a little complicated(TABLE ), there are more than 1000
> quantitative results of antibody concentrations stratified by age.The
> overall density of results at age j, Fj, is a mixture of the component
> densities, so if there are 5 age groups, then there will be 5 mixture
> models. Do i have to analyse each stratum respectively?
>
> TABLE
> ------------------------
> age Bin length freq
> ------------------------
> 1 1 19.75 4
> 1 2 21.75 10
> …………
> 1 12 41.75 36
> …………
> ------------------------
> 2 1 19.75 4
> 2 2 21.75 10
> …………
> 2 12 41.75 36
> …………
> -----------------------
>
> appreciated
>
> lybao
>
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