289 citations · 1.2k across the 72 of their papers we have counts for
4 papers · 1 filter
Tracking Dynamic Point Processes on Networks
Eric C. Hall, Rebecca M. Willett
Cascading chains of events are a salient feature of many real-world social, biological, and financial networks. In social networks, social reciprocity accounts for retaliations in…
Reducing Basis Mismatch in Harmonic Signal Recovery via Alternating Convex Search
Jonathan M. Nichols, Albert K. Oh, Rebecca M. Willett
The theory behind compressive sampling pre-supposes that a given sequence of observations may be exactly represented by a linear combination of a small number of basis vectors. In…
Minimax Optimal Rates for Poisson Inverse Problems with Physical Constraints
Xin Jiang, Garvesh Raskutti, Rebecca Willett
This paper considers fundamental limits for solving sparse inverse problems in the presence of Poisson noise with physical constraints. Such problems arise in a variety of applicat…
Online Markov decision processes with Kullback-Leibler control cost
Peng Guan, Maxim Raginsky, Rebecca Willett
This paper considers an online (real-time) control problem that involves an agent performing a discrete-time random walk over a finite state space. The agent's action at each time…