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- W2131492273 abstract "We perform sensitivity analyses to assess the impact of missing data on the structural properties of social networks. The social network is conceived of as being generated by a bipartite graph, in which actors are linked together via multiple interaction contexts or affiliations. We discuss three principal missing data mechanisms: network boundary specification (non-inclusion of actors or affiliations), survey non-response, and censoring by vertex degree (fixed choice design), examining their impact on the scientific collaboration network from the Los Alamos E-print Archive as well as random bipartite graphs. The simulation results show that network boundary specification and fixed choice designs can dramatically alter estimates of network-level statistics. The observed clustering and assortativity coefficients are overestimated via omission of affiliations or fixed choice thereof, and underestimated via actor non-response, which results in inflated measurement error. We also find that social networks with multiple interaction contexts may have certain interesting properties due to the presence of overlapping cliques. In particular, assortativity by degree does not necessarily improve network robustness to random omission of nodes as predicted by current theory." @default.
- W2131492273 created "2016-06-24" @default.
- W2131492273 creator A5066696247 @default.
- W2131492273 date "2006-07-01" @default.
- W2131492273 modified "2023-10-18" @default.
- W2131492273 title "Effects of missing data in social networks" @default.
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- W2131492273 doi "https://doi.org/10.1016/j.socnet.2005.07.002" @default.
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