const Ptr<UnivParams> ArModel::Sigsq_prm()const{ return prm2(); }
const Ptr<VectorParams> WP::day_of_week_cycle_prm()const{ return prm2();}
const Ptr<VectorParams> IndependentMvnModel::Sigsq_prm()const{return prm2();}
const Ptr<SpdParams> row_variance_param() const {return prm2();}
Ptr<SpdParams> row_variance_param() {return prm2();}
const Ptr<SpdParams> MvReg::Sigma_prm() const { return prm2(); }
Ptr<SpdParams> MvReg::Sigma_prm() { return prm2(); }