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Reconstructing Patterns of Information Diffusion from Incomplete Observations

Reconstructing Patterns of Information Diffusion from Incomplete Observations

This video was recorded at 25th Annual Conference on Neural Information Processing Systems (NIPS), Granada 2011. Motivated by the spread of on-line information in general and on-line petitions in particular, recent research has raised the following combinatorial estimation problem. There is a tree T that we cannot observe directly (representing the structure along which the information has spread), and certain nodes randomly decide to make their copy of the information public. In the case of a petition, the list of names on each public copy of the petition also reveals a path leading back to the root of the tree. What can we conclude about the properties of the tree we observe from these revealed paths, and can we use the structure of the observed tree to estimate the size of the full... Show More
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