Source identification under snapshots: A sample path based source estimator

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Advances in Information Security, 2019, 73 pp. 79 - 87
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© Springer Nature Switzerland AG 2019. In this chapter, we introduce a propagation source estimator under snapshot observations: a sample path based source estimator (Jordan Center). According to Chap. 5, a snapshot provides partial knowledge of network status at a given time t. Many approaches have been proposed to identify propagation sources under snapshot observations, including Jordan Center, Dynamic Message Passing, effective distance based method, etc. Within these methods, Jordan center is a representative one and many variations and improvements have been made based on this method. Here, we present the details of the Jordan Center estimator. For the techniques involved in other methods under snapshot observations, readers could refer to Chap. 9 for details.
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