45 citations · 202 across the 24 of their papers we have counts for
3 papers · 1 filter
Detecting Activations over Graphs using Spanning Tree Wavelet Bases
James Sharpnack, Akshay Krishnamurthy, Aarti Singh
We consider the detection of activations over graphs under Gaussian noise, where signals are piece-wise constant over the graph. Despite the wide applicability of such a detection…
Changepoint Detection over Graphs with the Spectral Scan Statistic
James Sharpnack, Alessandro Rinaldo, Aarti Singh
We consider the change-point detection problem of deciding, based on noisy measurements, whether an unknown signal over a given graph is constant or is instead piecewise constant o…
Variance function estimation in high-dimensions
Mladen Kolar, James Sharpnack
We consider the high-dimensional heteroscedastic regression model, where the mean and the log variance are modeled as a linear combination of input variables. Existing literature o…