Author : Georgiy Bobashev
Publisher : RTI Press
ISBN 13 :
Total Pages : 18 pages
Book Rating : 4./5 ( download)
Book Synopsis Assessing network structure with practical sampling methods by : Georgiy Bobashev
Download or read book Assessing network structure with practical sampling methods written by Georgiy Bobashev and published by RTI Press. This book was released on 2018-05-10 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using data from an enumerated network of worldwide flight connections between airports, we examine how sampling designs and sample size influence network metrics. Specifically, we apply three types of sampling designs: simple random sampling, nonrandom strategic sampling (i.e., selection of the largest airports), and a variation of snowball sampling. For the latter sampling method, we design what we refer to as a controlled snowball sampling design, which selects nodes in a manner analogous to a respondent-driven sampling design. For each design, we evaluate five commonly used measures of network structure and examine the percentage of total air traffic accounted for by each design. The empirical application shows that (1) the random and controlled snowball sampling designs give rise to more efficient estimates of the true underlying structure, and (2) the strategic sampling method can account for a greater proportion of the total number of passenger movements occurring in the network.