noun
hierarchical constraint set
Technical term in computing, referring to a set of constraints organized in a hierarchy.
このアルゴリズムは階層制約集合を用いて最適化を行う。
This algorithm performs optimization using a hierarchical constraint set.
Compound of 階層 (hierarchy), 制約 (constraint), and 集合 (set). The exact derivation is uncertain; it is a modern technical term.