Mobility

A Rapid Method for Detecting Geographically Disconnected Areas After Disasters

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Executive Summary

In this paper, the authors present a novel solution called Internet Footprint Investigation (IFI) for the rapid detection of network outages after a natural or man-made disaster. IFI is comprised of two components: the Active Network Probing (ANP) module, which proactively probes the network infrastructure to detect geographic areas that may be disconnected; and the Reactive Footprint Search (RFS) module, a reactive mechanism that improves the accuracy of the ANP results by incorporating the footprints of Location-Based Social Networks (LBSNs) established after a disaster occurs. Using Typhoon Morakot, which struck Taiwan in August 2009, as a case study, they implement the IFI system and evaluate its feasibility in a real-world scenario.

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