% Constrained multivariate normals in Stan % Chris Hanretty % 2014/02/27
Suppose we are interested in recovered the location parameters of a multivariate normal distribution with a known covariance matrix.
Specifically, suppose we are interested in recovering the location parameters given a covariance matrix that forces draws from this multivariate normal to sum to one.
This would be useful for recovering information about `true' latent levels of party support given manifest polling data.
In this case, we could use polling figures (
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