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Using selection bias to explain the observed structure of Internet diffusions.


ABSTRACT: Recently, large datasets stored on the Internet have enabled the analysis of processes, such as large-scale diffusions of information, at new levels of detail. In a recent study, Liben-Nowell and Kleinberg [(2008) Proc Natl Acad Sci USA 105:4633-4638] observed that the flow of information on the Internet exhibits surprising patterns whereby a chain letter reaches its typical recipient through long paths of hundreds of intermediaries. We show that a basic Galton-Watson epidemic model combined with the selection bias of observing only large diffusions suffices to explain these patterns. Thus, selection biases of which data we observe can radically change the estimation of classical diffusion processes.

SUBMITTER: Golub B 

PROVIDER: S-EPMC2890733 | biostudies-literature | 2010 Jun

REPOSITORIES: biostudies-literature

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Using selection bias to explain the observed structure of Internet diffusions.

Golub Benjamin B   Jackson Matthew O MO  

Proceedings of the National Academy of Sciences of the United States of America 20100603 24


Recently, large datasets stored on the Internet have enabled the analysis of processes, such as large-scale diffusions of information, at new levels of detail. In a recent study, Liben-Nowell and Kleinberg [(2008) Proc Natl Acad Sci USA 105:4633-4638] observed that the flow of information on the Internet exhibits surprising patterns whereby a chain letter reaches its typical recipient through long paths of hundreds of intermediaries. We show that a basic Galton-Watson epidemic model combined wit  ...[more]

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