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Natalia Ponomareva

12 accepted papers

2026

Privately Fine-Tuned LLMs Preserve Temporal Dynamics in Tabular Data

ICML 2026poster

Research on differentially private synthetic tabular data has largely focused on independent and identically distributed rows where each record corresponds to a unique individual. This perspective neglects the temporal complexity in longitudinal datasets, such as electronic health records, where a u…

Cited by 0SourceScholar
2025

Scaling Laws for Downstream Task Performance in Machine Translation

ICLR 2025poster

Scaling laws provide important insights that can guide the design of large language models (LLMs). Existing work has primarily focused on studying scaling laws for pretraining (upstream) loss. However, in transfer learning settings, in which LLMs are pretrained on an unsupervised dataset and then fi…

Cited by 2SourcePDFScholar
2024

OSSCAR: One-Shot Structured Pruning in Vision and Language Models with Combinatorial Optimization

ICML 2024poster

Structured pruning is a promising approach for reducing the inference costs of large vision and language models. By removing carefully chosen structures, e.g., neurons or attention heads, the improvements from this approach can be realized on standard deep learning hardware. In this work, we focus o…

2024

Private prediction for large-scale synthetic text generation

EMNLP 2024finding

We present an approach for generating differentially private synthetic text using large language models (LLMs), via private prediction. In the private prediction framework, we only require the output synthetic data to satisfy differential privacy guarantees. This is in contrast to approaches that tr…

2024

Synthetic Query Generation for Privacy-Preserving Deep Retrieval Systems using Differentially Private Language Models

NAACL 2024long

We address the challenge of ensuring differential privacy (DP) guarantees in training deep retrieval systems. Training these systems often involves the use of contrastive-style losses, which are typically non-per-example decomposable, making them difficult to directly DP-train with since common tech…

Cited by 5SourcePDFScholar
2023

Fast as CHITA: Neural Network Pruning with Combinatorial Optimization

ICML 2023poster

The sheer size of modern neural networks makes model serving a serious computational challenge. A popular class of compression techniques overcomes this challenge by pruning or sparsifying the weights of pretrained networks. While useful, these techniques often face serious tradeoffs between computa…

2023

Mind the (optimality) Gap: A Gap-Aware Learning Rate Scheduler for Adversarial Nets

AISTATS 2023poster

Adversarial nets have proved to be powerful in various domains including generative modeling (GANs), transfer learning, and fairness. However, successfully training adversarial nets using first-order methods remains a major challenge. Typically, careful choices of the learning rates are needed to ma…

Cited by 2SourcePDFScholar
2022

Training Text-to-Text Transformers with Privacy Guarantees

ACL 2022findings

Recent advances in NLP often stem from large transformer-based pre-trained models, which rapidly grow in size and use more and more training data. Such models are often released to the public so that end users can fine-tune them on a task dataset. While it is common to treat pre-training data as pub…

Cited by 41SourcePDFScholar
2021

Shift-Robust GNNs: Overcoming the Limitations of Localized Graph Training data

NeurIPS 2021poster

There has been a recent surge of interest in designing Graph Neural Networks (GNNs) for semi-supervised learning tasks. Unfortunately this work has assumed that the nodes labeled for use in training were selected uniformly at random (i.e. are an IID sample). However in many real world scenarios gath…

2020

Accelerating Gradient Boosting Machines

AISTATS 2020poster

Gradient Boosting Machine (GBM) introduced by \cite{friedman2001greedy} is a widely popular ensembling technique and is routinely used in competitions such as Kaggle and the KDDCup \citep{chen2016xgboost}. In this work, we propose an Accelerated Gradient Boosting Machine (AGBM) by incorporating Nest…

Cited by 54SourcePDFScholar
2020

The Tree Ensemble Layer: Differentiability meets Conditional Computation

ICML 2020poster

Neural networks and tree ensembles are state-of-the-art learners, each with its unique statistical and computational advantages. We aim to combine these advantages by introducing a new layer for neural networks, composed of an ensemble of differentiable decision trees (a.k.a. soft trees). While diff…