activity
20222026
most citedEfficient Conformal Prediction under Data Heterogeneity

1 citations · 1 across the 14 of their papers we have counts for

collaborators

14 papers

cs.CL2026

Response-Conditioned Parallel-to-Sequential Orchestration for Multi-Agent Systems

Nurbek Tastan, Alex Iacob, Lorenzo Sani +4

Multi-agent systems can solve complex tasks through collaboration between multiple Large Language Model agents. Existing collaboration frameworks typically operate in either a para…

cs.LG2026

MoSE: Mixture of Slimmable Experts for Efficient and Adaptive Language Models

Nurbek Tastan, Stefanos Laskaridis, Karthik Nandakumar +1

Mixture-of-Experts (MoE) models scale large language models efficiently by sparsely activating experts, but once an expert is selected, it is executed fully. Hence, the trade-off b…

cs.MA2025

Stochastic Self-Organization in Multi-Agent Systems

Nurbek Tastan, Samuel Horvath, Karthik Nandakumar

Multi-agent systems (MAS) based on Large Language Models (LLMs) have the potential to solve tasks that are beyond the reach of any single LLM. However, this potential can only be r…

cs.LG2025

LoFT: Low-Rank Adaptation That Behaves Like Full Fine-Tuning

Nurbek Tastan, Stefanos Laskaridis, Martin Takac +2

Large pre-trained models are commonly adapted to downstream tasks using parameter-efficient fine-tuning methods such as Low-Rank Adaptation (LoRA), which injects small trainable lo…

cs.LG2025

Aequa: Fair Model Rewards in Collaborative Learning via Slimmable Networks

Nurbek Tastan, Samuel Horvath, Karthik Nandakumar

Collaborative learning enables multiple participants to learn a single global model by exchanging focused updates instead of sharing data. One of the core challenges in collaborati…

cs.LG2025

CYCle: Choosing Your Collaborators Wisely to Enhance Collaborative Fairness in Decentralized Learning

Nurbek Tastan, Samuel Horvath, Karthik Nandakumar

Collaborative learning (CL) enables multiple participants to jointly train machine learning (ML) models on decentralized data sources without raw data sharing. While the primary go…

cs.LG2024

FedPeWS: Personalized Warmup via Subnetworks for Enhanced Heterogeneous Federated Learning

Nurbek Tastan, Samuel Horvath, Martin Takac +1

Statistical data heterogeneity is a significant barrier to convergence in federated learning (FL). While prior work has advanced heterogeneous FL through better optimization object…

cs.LG2024

Redefining Contributions: Shapley-Driven Federated Learning

Nurbek Tastan, Samar Fares, Toluwani Aremu +2

Federated learning (FL) has emerged as a pivotal approach in machine learning, enabling multiple participants to collaboratively train a global model without sharing raw data. Whil…

cs.LG2024

Generalized Policy Learning for Smart Grids: FL TRPO Approach

Yunxiang Li, Nicolas Mauricio Cuadrado, Samuel Horváth +1

The smart grid domain requires bolstering the capabilities of existing energy management systems; Federated Learning (FL) aligns with this goal as it demonstrates a remarkable abil…

cs.LG2024

Remove that Square Root: A New Efficient Scale-Invariant Version of AdaGrad

Sayantan Choudhury, Nazarii Tupitsa, Nicolas Loizou +3

Adaptive methods are extremely popular in machine learning as they make learning rate tuning less expensive. This paper introduces a novel optimization algorithm named KATE, which…

cs.LG2024

Vanishing Feature: Diagnosing Model Merging and Beyond

Xingyu Qu, Samuel Horvath

Model merging offers an efficient way to combine pre-trained neural networks but often suffers from inconsistent performance, especially when merging models with different initiali…

stat.ML2023

Dirichlet-based Uncertainty Quantification for Personalized Federated Learning with Improved Posterior Networks

Nikita Kotelevskii, Samuel Horváth, Karthik Nandakumar +2

In modern federated learning, one of the main challenges is to account for inherent heterogeneity and the diverse nature of data distributions for different clients. This problem i…

stat.ML2023★ 1 cited

Efficient Conformal Prediction under Data Heterogeneity

Vincent Plassier, Nikita Kotelevskii, Aleksandr Rubashevskii +7

Conformal Prediction (CP) stands out as a robust framework for uncertainty quantification, which is crucial for ensuring the reliability of predictions. However, common CP methods…

cs.CV2022

PaDPaF: Partial Disentanglement with Partially-Federated GANs

Abdulla Jasem Almansoori, Samuel Horváth, Martin Takáč

Federated learning has become a popular machine learning paradigm with many potential real-life applications, including recommendation systems, the Internet of Things (IoT), health…