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Federated Optimization in Heterogeneous Networks

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arxiv 1812.06127 v5 pith:KLOO255C submitted 2018-12-14 cs.LG stat.ML

classification cs.LGstat.ML
keywords federatedheterogeneityfedproxlearningsystemsconvergencedistributedacross
verification ladder T0 review T1 audit T2 compute T3 formal
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Federated Learning is a distributed learning paradigm with two key challenges that differentiate it from traditional distributed optimization: (1) significant variability in terms of the systems characteristics on each device in the network (systems heterogeneity), and (2) non-identically distributed data across the network (statistical heterogeneity). In this work, we introduce a framework, FedProx, to tackle heterogeneity in federated networks. FedProx can be viewed as a generalization and re-parametrization of FedAvg, the current state-of-the-art method for federated learning. While this re-parameterization makes only minor modifications to the method itself, these modifications have important ramifications both in theory and in practice. Theoretically, we provide convergence guarantees for our framework when learning over data from non-identical distributions (statistical heterogeneity), and while adhering to device-level systems constraints by allowing each participating device to perform a variable amount of work (systems heterogeneity). Practically, we demonstrate that FedProx allows for more robust convergence than FedAvg across a suite of realistic federated datasets. In particular, in highly heterogeneous settings, FedProx demonstrates significantly more stable and accurate convergence behavior relative to FedAvg---improving absolute test accuracy by 22% on average.

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Cited by 8 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 452 citations worldwide. Full citation record

  1. FedFFT: Taming Client Drift in Federated SAM via Spectral Perturbation Filtering

    cs.LG 2026-07 conditional novelty 6.5 of 10

    Low-frequency components of client-side SAM perturbations carry most inter-client disagreement; high-pass filtering them yields more consistent federated updates and higher accuracy under non-IID data.

  2. Federated Lightweight Fine-Tuning

    cs.LG 2026-07 conditional novelty 6.0 of 10

    A federated fine-tuning method transmits only 1,280 latent floats per round and reaches near-FedAvg accuracy by exploiting the exact averaging identity of affine mapping networks.

  3. FedCLAM: Client Adaptive Momentum with Foreground Intensity Matching for Federated Medical Image Segmentation

    eess.IV 2025-06 conditional novelty 6.0 of 10

    FedCLAM improves federated medical segmentation by weighting client updates with validation-loss progress and aligning predicted and ground-truth foreground intensities.

  4. AFBS:Buffer Gradient Selection in Semi-asynchronous Federated Learning

    cs.LG 2025-06 conditional novelty 6.0 of 10

    AFBS scores buffered gradients by staleness and dataset size, discards low-value ones, and clusters clients through random-projection-encrypted label distributions before aggregation in semi-asynchronous federated learning.

  5. FedProIn: Mitigating Client Drift for Learnable Prototypes in Federated Medical Imaging

    eess.IV 2026-07 accept novelty 5.0 of 10

    FedProIn mitigates client drift in federated medical imaging by combining multiple learnable prototypes, feature-divergence and prototype-contrastive losses, and normalized influence aggregation, outperforming baselin...

  6. Taming Volatility: Stable and Private QUIC Classification with Federated Learning

    cs.NI 2025-09 reject novelty 5.0 of 10

    Buffering client data in federated QUIC classification suppresses training-time volatility, yet the headline 95.2 percent F1 is measured on a buffered test set that hides real-time traffic swings.

  7. FedEve: On Bridging the Client Drift and Period Drift for Cross-device Federated Learning

    cs.LG 2025-08 reject novelty 4.0 of 10

    FedEve uses a Kalman filter to combine server momentum (prediction) with client updates (observation) to offset period drift and client drift in cross-device federated learning.

  8. DP-FedLoRA: Privacy-Enhanced Federated Fine-Tuning for On-Device Large Language Models

    cs.CR 2025-09 reject novelty 3.0 of 10

    DP-FedLoRA clips and adds Gaussian noise to per-client LoRA matrices in federated LLM fine-tuning, claiming unbiased updates and bounded variance, but the privacy calibration and experiments have significant gaps.

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