  A novel approach to rapidly converging high-level coupled-cluster (CC)
energetics in an automated fashion is proposed. The key idea is an adaptive
selection of the excitation manifolds defining higher-than-two-body components
of the cluster operator inspired by the CC($P$;$Q$) moment expansions. The
usefulness of the resulting methodology is illustrated by molecular examples
where the goal is to recover the electronic energies obtained using the CC
method with a full treatment of singly, doubly, and triply excited clusters
(CCSDT) when the noniterative triples corrections to CCSD fail.
