rUV_fc function

Gibbs sampling of U and V

A Gibbs sampler for updating the multiplicative effect matrices U and V

rUV_fc(Z, U, V, Suv, rho, s2 = 1, offset = 0)

Arguments

• Z: n X n normal relational matrix
• U: current value of U
• V: current value of V
• Suv: covariance of (U V)
• rho: dyadic correlation
• s2: dyadic variance
• offset: a matrix of the same dimension as Z. It is assumed that Z-offset is equal to the multiplicative effects plus dyadic noise, so the offset should contain any additive effects (such as Xbeta(X,beta+ outer(a,b,"+") )

Returns

• U: a new value of U - V: a new value of V

Author(s)

Peter Hoff