activity
20112026
most citedDecomposing Gaussians with Unknown Covariance

3 citations · 7 across the 11 of their papers we have counts for

collaborators

11 papers

stat.ME2026

Testing hypotheses via orthogonalization

Ameer Dharamshi, Runjia Zou, Daniela Witten

Classical hypothesis testing frameworks break down in contemporary settings in which null hypotheses are increasingly abstract, the same data are used to both generate and test hyp…

stat.ME2026

Inference conditional on selection: a review

Anna Neufeld, Ronan Perry, Daniela Witten

In this article, we review selective inference, a set of techniques for inference when the statistical question asked is a function of the data. This setting often arises in contem…

stat.ME2026

Generalized Prediction-Powered Inference, with Application to Binary Classifier Evaluation

Runjia Zou, Daniela Witten, Brian Williamson

In the partially-observed outcome setting, a recent set of proposals known as "prediction-powered inference" (PPI) involve (i) applying a pre-trained machine learning model to pred…

stat.ME2026

Post-selection inference for penalized M-estimators via score thinning

Ronan Perry, Snigdha Panigrahi, Daniela Witten

We consider inference for M-estimators after model selection using a sparsity-inducing penalty. While existing methods for this task require bespoke inference procedures, we propos…

math.ST2025

A Unified Framework for Semiparametrically Efficient Semi-Supervised Learning

Zichun Xu, Daniela Witten, Ali Shojaie

We consider statistical inference under a semi-supervised setting where we have access to both a labeled dataset consisting of pairs and an unlabeled datase…

stat.ME2025

Thinning a Wishart Random Matrix

Ameer Dharamshi, Anna Neufeld, Lucy L. Gao +2

Recent work has explored data thinning, a generalization of sample splitting that involves decomposing a (possibly matrix-valued) random variable into independent components. In th…

stat.ME2024★ 3 cited

Decomposing Gaussians with Unknown Covariance

Ameer Dharamshi, Anna Neufeld, Lucy L. Gao +2

Common workflows in machine learning and statistics rely on the ability to partition the information in a data set into independent portions. Recent work has shown that this may be…

stat.ME2024

Discussion of "Data fission: splitting a single data point"

Anna Neufeld, Ameer Dharamshi, Lucy L. Gao +2

Leiner et al. [2023] introduce an important generalization of sample splitting, which they call data fission. They consider two cases of data fission: P1 fission and P2 fission. Wh…

stat.ME2024★ 1 cited

Infer-and-widen, or not?

Ronan Perry, Zichun Xu, Olivia McGough +1

In recent years, there has been substantial interest in the task of selective inference: inference on a parameter that is selected from the data. Many of the existing proposals fal…

stat.ME2024★ 3 cited

Inference on the proportion of variance explained in principal component analysis

Ronan Perry, Snigdha Panigrahi, Jacob Bien +1

Principal component analysis (PCA) is a longstanding and well-studied approach for dimension reduction. It rests upon the assumption that the underlying signal in the data has low…

stat.ME2011

The joint graphical lasso for inverse covariance estimation across multiple classes

Patrick Danaher, Pei Wang, Daniela M. Witten

We consider the problem of estimating multiple related but distinct graphical models on the basis of a high-dimensional data set with observations that belong to distinct classes.…