NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

Stanley S. Wasserman

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NBER Working Papers and Publications

November 1975Notes on Automating Stem and Leaf Displays
with David C. Hoaglin: w0109
The stem-and-leaf display is a natural semi-graphic technique to include in statistical computing systems. This paper discusses the choices involved in implementing both automated and flexible versions of the display, develops an algorithm for the automated version, examines various implementation considerations, and presents a set of semi-portable FORTRAN subroutines for producing stem-and-leaf displays.
Random Directed Graph Distributions in the Triad Census in Social Networks
w0113
This paper uses the concept of the triad census first introduced by Holland and Leinhardt, and describes several distributions on directed graphs. Methods are presented for calculating the mean and the covariance matrix of the triad census for the uniform distribution that conditions on the number of choices made by each individual in the social network. Several complex distributions on digraphs are approximated, and an application of these methods to a sociogram is given.

Published: Stanley S. Wasserman, 1977. "Random directed graph distributions and the triad census in social networks†," The Journal of Mathematical Sociology, vol 5(1), pages 61-86.

 
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