activity
20212026
most citedPredicting the Geolocation of Tweets Using transformer models on Customized Data

6 citations · 19 across the 14 of their papers we have counts for

collaborators

15 papers

cs.LG2026

Q-PACE: Dynamic Precision Allocation for Quantization-Aware Training

Alexandra Volkova, Matin Ansaripour, Erik Schultheis +2

Quantization-aware training (QAT) leverages lower-precision arithmetic to reduce the cost of LLM deployment, but aggressive quantization degrades final model performance. A common…

cs.LG2026

Towards Robust Scaling Laws for Optimizers

Alexandra Volkova, Mher Safaryan, Christoph H. Lampert +1

The quality of Large Language Model (LLM) pretraining depends on multiple factors, including the compute budget and the choice of optimization algorithm. Empirical scaling laws are…

cs.CR2025

Differentially Private Federated -Means Clustering with Server-Side Data

Jonathan Scott, Christoph H. Lampert, David Saulpic

Clustering is a cornerstone of data analysis that is particularly suited to identifying coherent subgroups or substructures in unlabeled data, as are generated continuously in larg…

cs.LG2023

ELSA: Partial Weight Freezing for Overhead-Free Sparse Network Deployment

Paniz Halvachi, Alexandra Peste, Dan Alistarh +1

We present ELSA, a practical solution for creating deep networks that can easily be deployed at different levels of sparsity. The core idea is to embed one or more sparse networks…

cs.LG2023

1-Lipschitz Neural Networks are more expressive with N-Activations

Bernd Prach, Christoph H. Lampert

A crucial property for achieving secure, trustworthy and interpretable deep learning systems is their robustness: small changes to a system's inputs should not result in large chan…

cs.LG2023★ 1 cited

PeFLL: Personalized Federated Learning by Learning to Learn

Jonathan Scott, Hossein Zakerinia, Christoph H. Lampert

We present PeFLL, a new personalized federated learning algorithm that improves over the state-of-the-art in three aspects: 1) it produces more accurate models, especially in the l…

cs.LG2023

Deep Neural Collapse Is Provably Optimal for the Deep Unconstrained Features Model

Peter Súkeník, Marco Mondelli, Christoph Lampert

Neural collapse (NC) refers to the surprising structure of the last layer of deep neural networks in the terminal phase of gradient descent training. Recently, an increasing amount…

cs.CL2023★ 6 cited

Predicting the Geolocation of Tweets Using transformer models on Customized Data

Kateryna Lutsai, Christoph H. Lampert

This research is aimed to solve the tweet/user geolocation prediction task and provide a flexible methodology for the geotagging of textual big data. The suggested approach impleme…

cs.LG2022

Cross-client Label Propagation for Transductive and Semi-Supervised Federated Learning

Jonathan Scott, Michelle Yeo, Christoph H. Lampert

We present Cross-Client Label Propagation(XCLP), a new method for transductive federated learning. XCLP estimates a data graph jointly from the data of multiple clients and compute…

cs.LG2022★ 2 cited

Generalization In Multi-Objective Machine Learning

Peter Súkeník, Christoph H. Lampert

Modern machine learning tasks often require considering not just one but multiple objectives. For example, besides the prediction quality, this could be the efficiency, robustness…

cs.LG2022

Almost-Orthogonal Layers for Efficient General-Purpose Lipschitz Networks

Bernd Prach, Christoph H. Lampert

It is a highly desirable property for deep networks to be robust against small input changes. One popular way to achieve this property is by designing networks with a small Lipschi…

cs.LG2022★ 1 cited

CrAM: A Compression-Aware Minimizer

Alexandra Peste, Adrian Vladu, Eldar Kurtic +2

Deep neural networks (DNNs) often have to be compressed, via pruning and/or quantization, before they can be deployed in practical settings. In this work we propose a new compressi…

cs.LG2022

Lightweight Conditional Model Extrapolation for Streaming Data under Class-Prior Shift

Paulina Tomaszewska, Christoph H. Lampert

We introduce LIMES, a new method for learning with non-stationary streaming data, inspired by the recent success of meta-learning. The main idea is not to attempt to learn a single…

cs.LG2021★ 5 cited

SSSE: Efficiently Erasing Samples from Trained Machine Learning Models

Alexandra Peste, Dan Alistarh, Christoph H. Lampert

The availability of large amounts of user-provided data has been key to the success of machine learning for many real-world tasks. Recently, an increasing awareness has emerged tha…

cs.LG2021★ 4 cited

Fairness-Aware PAC Learning from Corrupted Data

Nikola Konstantinov, Christoph H. Lampert

Addressing fairness concerns about machine learning models is a crucial step towards their long-term adoption in real-world automated systems. While many approaches have been devel…