1.1k citations · 1.7k across the 21 of their papers we have counts for
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3 papers · 1 filter
math.ST2014★ 2 cited
Global testing against sparse alternatives in time-frequency analysis
T. Tony Cai, Yonina C. Eldar, Xiaodong Li
In this paper, an over-sampled periodogram higher criticism (OPHC) test is proposed for the global detection of sparse periodic effects in a complex-valued time series. An explicit…
cs.IT2014★ 1.1k cited
Phase Retrieval via Wirtinger Flow: Theory and Algorithms
Emmanuel Candes, Xiaodong Li, Mahdi Soltanolkotabi
We study the problem of recovering the phase from magnitude measurements; specifically, we wish to reconstruct a complex-valued signal x of C^n about which we have phaseless sample…
math.ST2014★ 85 cited
Robust and computationally feasible community detection in the presence of arbitrary outlier nodes
T. Tony Cai, Xiaodong Li
Community detection, which aims to cluster nodes in a given graph into distinct groups based on the observed undirected edges, is an important problem in network data analy…