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2008 Aug 21
3
[help] simulation of a simple Marcov Stochastic process for population genetics
Hi, this is my first time using R. I want to simulate the following process:
"in a population of size N, there are i individuals bearing genotype A, the
number of those bearing A is j in the next generation, which following a
binominal distribution (choose j from 2*N, the p is i/2*N), to plot the
probability of the next generations, my script is as follows. It cannot run
successfully,
2010 Oct 15
0
nomianl response model
Is there a way to estimate a nominal response model?
To be more specific let's say I want to calibrate:
\pi_{v}(\theta_j)=\frac{e^{\xi_{v}+\lambda_{v}\theta_j}}{\sum_{h=1}^m
e^{\xi_{h}+\lambda_{h}\theta_j}}
Where $\theta_j$ is a the dependent variable and I need to estimate
$\xi_{h}$ and $\lambda_{h}$ for $h \in {1...,m}$.
Thank you,
Mauricio Romero
Quantil S.A.S.
Cel: 3112231150