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ALT
2008
Springer

Optimally Learning Social Networks with Activations and Suppressions

9 years 5 months ago
Optimally Learning Social Networks with Activations and Suppressions
In this paper we consider the problem of learning hidden independent cascade social networks using exact value injection queries. These queries involve activating and suppressing agents in the target network. We develop an algorithm that optimally learns an arbitrary social network of size n using O(n2 ) queries, matching the information theoretic lower bound we prove for this problem. We also consider the case when the target social network forms a tree and show that the learning problem takes Θ(n log(n)) queries. We also give an approximation algorithm for finding an influential set of nodes in the network, without resorting to learning its structure. Finally, we discuss some limitations of our approach, and limitations of path-based methods, when non-exact value injection queries are used.
Dana Angluin, James Aspnes, Lev Reyzin
Added 14 Mar 2010
Updated 14 Mar 2010
Type Conference
Year 2008
Where ALT
Authors Dana Angluin, James Aspnes, Lev Reyzin
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