Node connection strength in History of History Tree.
Each node in History of History Tree can be characterized by its mean distance from every other node. Below is a histogram of mean distances for every node in the tree. The final bin includes nodes that are not connected to the main tree. Note also that only individuals whose primary affiliation is this tree are included. Nodes cross-listed from other academic trees are included on their primary tree.

Mean inter-node distance

46-
37-
28-
18-
9-

7 8 9 10 11 12 13 14 15 16 17 18 19+
Mean distance
 Number of nodes 



20 most tightly coupled nodes.
Below are the History of History Tree nodes with shortest mean distance.

Rank Mean dist Name Institution Area Date
1 7.2 David R. Mayhew (Info) Yale University American politics 2006-04-14
2 8.39 Sara E. Lampert (Info) University of Michigan, Ann Arbor Alkaloid total synthesis 2015-11-30
3 8.39 Laura A. Hymson (Info) University of Michigan, Ann Arbor Alkaloid total synthesis 2015-11-30
4 9.19 jandh (Info) 2009-05-15
5 10.99 Jacqueline Francis (Info) Emory University industrial organic chemistry 2015-12-01
6 10.99 Pamela R. Franco (Info) Emory University industrial organic chemistry 2015-12-01
7 11.42 Albert Egges van Giffen (Info) University of Groningen archeology 2011-10-30
8 11.47 Frank Gouldsmith Speck (Info) University of Pennsylvania Northern Algonquins 2010-10-20
9 12.35 Harm Tjalling Waterbolk (Info) University of Groningen Prehistory, Germanic archeology 2011-10-30
10 12.7 Ralph Linton (Info) Yale University 2010-10-20
11 12.7 Marvin Kaufmann Opler (Info) State University of New York, Buffalo 2010-10-20
12 17.95 Jennifer V. Ebbeler (Info) University of Texas at Austin Greco-Roman epistolography; the literature and cultural history of Late Antiquity, particularly Roman Africa; St. Augustine; Classical Latin prose; Vergil's Eclogues 2015-11-26
13 19.6 Conrad Celtes (Celtis) (Info) Universities of Vienna & Ingolstadt history, humanism 2007-03-15
14 19.61 Anthony Grafton (Info) Princeton University 2015-07-15
15 19.77 James J. Wald (Info) Hampshire College history, literature, book history 2015-07-15
16 21.17 Robert Darnton (Info) Princeton University 2015-07-15
17 21.26 Walter Hinderer (Info) Princeton University 2015-07-15
18 22.02 Zur Shalev (Info) Princeton University 2015-11-21
19 22.02 Eric H. Ash (Info) Princeton University 2015-11-21
20 22.02 Amanda J. Wunder (Info) Princeton University 2015-11-21


Distribution of individual connectivity.
Another way to look at the History of History Tree graph is to plot a histogram of researchers (nodes) based according to the number of immediate connections (edges) they have to other researchers. The final bin includes nodes with 16 or more connections. The actual distribution has a very long tail, with a maximum of 56 connections. Thanks to Adam Snyder for suggesting this analysis!

Edge vs node distribution

8361-
6689-
5017-
3344-
1672-

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16+
Number of connections
 Node count