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GraphicalModels :: gaussianParametrization(...,SimpleTreks=>...)

gaussianParametrization(...,SimpleTreks=>...) -- optional input for gaussianParametrization



Put SimpleTreks => true as an argument in the function gaussianParametrization to compute a parametrization of the covariance matrix $S=(s_{(i,j)})$ where $s_{(i,j)}$ is the sum of monomials corresponding to simple treks between vertices $i$ and $j$. Here, a simple trek is a trek $(P_L,P_R)$ where the paths $P_L$ and $P_R$ do not have any common vertices except perhaps at their source. See trekSeparation for the definition of a trek.

If the option SimpleTreks => false is used, then the sum is over all treks, and not just simple treks.

Further information

See also

Functions with optional argument named SimpleTreks :