Select Lab Publications


Cost-effective Outbreak Detection in Networks (2007)

By: Jure Leskovec, Andreas Krause, Carlos Guestrin, Christos Faloutsos, Jeanne VanBriesen, and Natalie Glance

Abstract: Given a water distribution network, where should we place sensors to quickly detect contaminants? Or, which blogs should we read to avoid missing important stories? These seemingly different problems share common structure: Outbreak detection can be modeled as selecting nodes (sensor locations, blogs) in a network, in order to detect the spreading of a virus or information as quickly as possible. We present a general methodology for near optimal sensor placement in these and related problems. We demonstrate that many realistic outbreak detection objectives (e.g., detection likelihood, population affected) exhibit the property of “submodularity”. We exploit submodularity to develop an efficient algorithm that scales to large problems, achieving near optimal placements, while being 700 times faster than a simple greedy algorithm. We also derive online bounds on the quality of the placements obtained by any algorithm. Our algorithms and bounds also handle cases where nodes (sensor locations, blogs) have different costs. We evaluate our approach on several large real-world problems, including a model of a water distribution network from the EPA, and real blog data. The obtained sensor placements are provably near optimal, providing a constant fraction of the optimal solution. We show that the approach scales, achieving speedups and savings in storage of several orders of magnitude. We also show how the approach leads to deeper insights in both applications, answering multicriteria trade-off, cost-sensitivity and generalization questions.

Download Information
Jure Leskovec, Andreas Krause, Carlos Guestrin, Christos Faloutsos, Jeanne VanBriesen, and Natalie Glance (2007). "Cost-effective Outbreak Detection in Networks." ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD) (pp. 420-429). Winner of the Best Paper Award. pdf long talk        
BibTeX citation

@inproceedings{Leskovec+Krause+Guestrin+Faloutsos+VanBriesen+Glance:kdd07celf,
author = {Jure Leskovec and Andreas Krause and Carlos Guestrin and Christos
Faloutsos and Jeanne VanBriesen and Natalie Glance},
title = {Cost-effective Outbreak Detection in Networks},
booktitle = {ACM SIGKDD International Conference on Knowledge Discovery and
Data Mining (KDD)},
month = {August},
year = {2007},
pages={420--429},
location = {San Jose, California},
wwwfilebase = {kdd2007-leskovec-krause-guestrin-faloutsos-vanbriesen-glance},
wwwtopic = {Observation Selection},
wwwaward = {Winner of the Best Paper Award}
}



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