Interactive viewing of Shannon Channel's transmission

Friday October 25, 2019 10:00 AM

Active Sensing for Quickest Event Detection in Networks

Speaker: Ali Tajer, Electrical, Computer, and Systems Engineering, Rensselaer Polytechnic Institute.
Location: Moore B280

Abstract: Many social and technological networks can be modeled as stochastic networks. An abrupt change in the behavior in a cluster of agents in the network often translates into a change in the stochastic model of the network. The quickest event detection problem refers to detecting abrupt changes in a network with minimal delay after the changes occur, as well as localizing the cluster of the changes that have undergone changes. Measurements from the network are acquired sequentially until a reliable decision about a change can be formed. When a cluster undergoes a change, the traces of the change appears in the measurements from different agents in varying degrees. In this talk we will discuss an active sensing mechanism that can rapidly focus the sensing resources such that change points as well as the cluster undergone a change can be identified with the fewest number of measurements from the network.

Contact: Liliana Chavarria at 626-395-4715 lchavarr@caltech.edu