280 citations · 1.6k across the 92 of their papers we have counts for
9 papers · 1 filter
On the Complexity of Nash Equilibria in Anonymous Games
Xi Chen, David Durfee, Anthi Orfanou
We show that the problem of finding an ε-approximate Nash equilibrium in an anonymous game with seven pure strategies is complete in PPAD, when the approximation parameter ε is exp…
A Bayesian Particle Filtering Method For Brain Source Localisation
Xi Chen, Simo Särkkä, Simon Godsill
In this paper, we explore the multiple source localisation problem in the cerebral cortex using magnetoencephalography (MEG) data. We model neural currents as point-wise dipolar so…
On Bayes Risk Lower Bounds
Xi Chen, Adityanand Guntuboyina, Yuchen Zhang
This paper provides a general technique for lower bounding the Bayes risk of statistical estimation, applicable to arbitrary loss functions and arbitrary prior distributions. A low…
Experimental realization of an optical antenna for collecting 99% of photons from a quantum emitter
X. -L. Chu, T. J. K. Brenner, X. -W. Chen +4
We present the fabrication and characterization of an optical antenna that converts the dipolar radiation of a quantum emitter to a directional beam with 99% efficiency. Aside from…
Exclusive quantum channels in quantum networks
Xi Chen, He-Ming Wang, Liang-Zhu Mu +1
Quantum state can be teleported to a remote site by only local measurement and classical communication if the prior Einstein-Podolsky-Rosen quantum channel is available between the…
A Scale-Free Topology Construction Model for Wireless Sensor Networks
Lurong Jiang, Xinyu Jin, Yongxiang Xia +3
A local-area and energy-efficient (LAEE) evolution model for wireless sensor networks is proposed. The process of topology evolution is divided into two phases. In the first phase,…