8 citations · 8 across the 4 of their papers we have counts for
4 papers
Two new algorithms for maximum likelihood estimation of sparse covariance matrices with applications to graphical modeling
Ghania Fatima, Prabhu Babu, Petre Stoica
In this paper, we propose two new algorithms for maximum-likelihood estimation (MLE) of high dimensional sparse covariance matrices. Unlike most of the state of-the-art methods, wh…
Optimal Sensor Placement for Hybrid Source Localization Using Fused TOA-RSS-AOA Measurements
Kuntal Panwar, Ghania Fatima, Prabhu Babu
Source localization techniques incorporating hybrid measurements improve the reliability and accuracy of the location estimate. Given a set of hybrid sensors that can collect combi…
Learning Sparse Graphs via Majorization-Minimization for Smooth Node Signals
Ghania Fatima, Aakash Arora, Prabhu Babu +1
In this letter, we propose an algorithm for learning a sparse weighted graph by estimating its adjacency matrix under the assumption that the observed signals vary smoothly over th…
PDMM: A novel Primal-Dual Majorization-Minimization algorithm for Poisson Phase-Retrieval problem
Ghania Fatima, Zongyu Li, Aakash Arora +1
In this paper, we introduce a novel iterative algorithm for the problem of phase-retrieval where the measurements consist of only the magnitude of linear function of the unknown si…