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This might help for the first question:

Wang, Dan J.; Shi, Xiaolin; McFarland, Daniel A.; Leskovec, Jure
(2012): Measurement error in network data: A re-classification. In:
Social Networks. Online:

Kind regards,

Jan Schulz
PhD Student
TU Bergakademie Freiberg

On 12 February 2013 04:56, Qian Hu <[log in to unmask]> wrote:
> I remember somewhere in the literature that says some centrality measures
> such as the indegree centrality, are relatively robust for network data that
> captures over 50% of the data. Am I correct?

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