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Personalized Federated Learning with Feature Alignment and Classifier Collaboration

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arxiv 2306.11867 v1 pith:NRTBN3JO submitted 2023-06-20 cs.LG cs.DC

classification cs.LGcs.DC
keywords learningclassifierfeaturerepresentationalignmentclientcollaborationdata
verification ladder T0 review T1 audit T2 compute T3 formal
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Data heterogeneity is one of the most challenging issues in federated learning, which motivates a variety of approaches to learn personalized models for participating clients. One such approach in deep neural networks based tasks is employing a shared feature representation and learning a customized classifier head for each client. However, previous works do not utilize the global knowledge during local representation learning and also neglect the fine-grained collaboration between local classifier heads, which limit the model generalization ability. In this work, we conduct explicit local-global feature alignment by leveraging global semantic knowledge for learning a better representation. Moreover, we quantify the benefit of classifier combination for each client as a function of the combining weights and derive an optimization problem for estimating optimal weights. Finally, extensive evaluation results on benchmark datasets with various heterogeneous data scenarios demonstrate the effectiveness of our proposed method. Code is available at https://github.com/JianXu95/FedPAC

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 35 citations worldwide. Full citation record

  1. X-VFL: A New Vertical Federated Learning Framework with Cross Completion and Decision Subspace Alignment

    cs.LG 2025-08 reject novelty 5.0 of 10

    X-VFL proposes cross-client feature completion plus decision-subspace alignment for vertical federated learning with partially missing features, but the claimed independent inference with missing features contradicts ...

  2. Proto-EVFL: Enhanced Vertical Federated Learning via Dual Prototype with Extremely Unaligned Data

    cs.LG 2025-07 conditional novelty 5.0 of 10

    Proto-EVFL selects useful unaligned data in vertical federated learning with a dual optimal transport cost and class priors, then aggregates party features with learned gates, improving accuracy on rare and unseen classes.

  3. Hypernetworks for Model-Heterogeneous Personalized Federated Learning

    cs.LG 2025-07 conditional novelty 5.0 of 10

    A server-side multi-head hypernetwork generates personalized parameters for clients with heterogeneous model architectures, plus an optional global-model distillation variant, and beats several pFL baselines on four b...

  4. Learning to Collaborate Over Graphs: A Selective Federated Multi-Task Learning Approach

    cs.LG 2025-06 conditional novelty 5.0 of 10

    SFMTL-Graph builds a dynamic client similarity graph, partitions it with Louvain community detection, and restricts federated model aggregation to within communities to personalize learning while cutting communication.

  5. Personalized Federated Learning via Dual-Prompt Optimization and Cross Fusion

    cs.LG 2025-06 conditional novelty 3.0 of 10

    pFedDC combines global and local text and vision prompts with cross-attention fusion to personalize federated CLIP models under label and domain shift.

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