Search Results for author: Morgane Austern

Found 10 papers, 5 papers with code

Random Geometric Graph Alignment with Graph Neural Networks

no code implementations12 Feb 2024 Suqi Liu, Morgane Austern

We characterize the performance of graph neural networks for graph alignment problems in the presence of vertex feature information.

Statistical Guarantees for Link Prediction using Graph Neural Networks

no code implementations5 Feb 2024 Alan Chung, Amin Saberi, Morgane Austern

This paper derives statistical guarantees for the performance of Graph Neural Networks (GNNs) in link prediction tasks on graphs generated by a graphon.

Link Prediction

Inference on Optimal Dynamic Policies via Softmax Approximation

1 code implementation8 Mar 2023 Qizhao Chen, Morgane Austern, Vasilis Syrgkanis

Estimating optimal dynamic policies from offline data is a fundamental problem in dynamic decision making.

Causal Inference Decision Making +1

Debiased Machine Learning without Sample-Splitting for Stable Estimators

no code implementations3 Jun 2022 Qizhao Chen, Vasilis Syrgkanis, Morgane Austern

For instance, we show that the stability properties that we propose are satisfied for ensemble bagged estimators, built via sub-sampling without replacement, a popular technique in machine learning practice.

BIG-bench Machine Learning

Data Augmentation in the Underparameterized and Overparameterized Regimes

1 code implementation18 Feb 2022 Kevin Han Huang, Peter Orbanz, Morgane Austern

We provide results that exactly quantify how data augmentation affects the variance and limiting distribution of estimates, and analyze several specific models in detail.

Data Augmentation

Asymptotics of the Bootstrap via Stability with Applications to Inference with Model Selection

no code implementations NeurIPS 2021 Morgane Austern, Vasilis Syrgkanis

One of the most commonly used methods for forming confidence intervals is the empirical bootstrap, which is especially expedient when the limiting distribution of the estimator is unknown.

BIG-bench Machine Learning Model Selection

Asymptotics of Network Embeddings Learned via Subsampling

2 code implementations6 Jul 2021 Andrew Davison, Morgane Austern

We prove, under the assumption that the graph is exchangeable, that the distribution of the learned embedding vectors asymptotically decouples.

Link Prediction Node Classification +1

Asymptotics of the Empirical Bootstrap Method Beyond Asymptotic Normality

no code implementations23 Nov 2020 Morgane Austern, Vasilis Syrgkanis

One of the most commonly used methods for forming confidence intervals for statistical inference is the empirical bootstrap, which is especially expedient when the limiting distribution of the estimator is unknown.

Empirical Risk Minimization and Stochastic Gradient Descent for Relational Data

1 code implementation27 Jun 2018 Victor Veitch, Morgane Austern, Wenda Zhou, David M. Blei, Peter Orbanz

We solve this problem using recent ideas from graph sampling theory to (i) define an empirical risk for relational data and (ii) obtain stochastic gradients for this empirical risk that are automatically unbiased.

Graph Sampling Node Classification

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