FSSUAVL: A Discriminative Framework using Vision Models for Federated Self-Supervised Audio and Image Understanding

• URL: http://arxiv.org/abs/2504.09516v1
• Date: Sun, 13 Apr 2025 11:04:43 GMT
• Title: FSSUAVL: A Discriminative Framework using Vision Models for Federated Self-Supervised Audio and Image Understanding
• Authors: Yasar Abbas Ur Rehman, Kin Wai Lau, Yuyang Xie, Ma Lan, JiaJun Shen,
• Abstract summary: We introduce textttFSSUAVL, a single deep model pretrained in Federated Learning.<n>Instead of aligning the audio and image modalities, textttFSSUAVL jointly discriminates them by projecting them into a common embedding space.<n>Our experiments with CNN and ViT demonstrate that textttFSSUAVL significantly improves performance across various image- and audio-based downstream tasks.
• Score: 10.897206681590541
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent studies have demonstrated that vision models can effectively learn multimodal audio-image representations when paired. However, the challenge of enabling deep models to learn representations from unpaired modalities remains unresolved. This issue is especially pertinent in scenarios like Federated Learning (FL), where data is often decentralized, heterogeneous, and lacks a reliable guarantee of paired data. Previous attempts tackled this issue through the use of auxiliary pretrained encoders or generative models on local clients, which invariably raise computational cost with increasing number modalities. Unlike these approaches, in this paper, we aim to address the task of unpaired audio and image recognition using \texttt{FSSUAVL}, a single deep model pretrained in FL with self-supervised contrastive learning (SSL). Instead of aligning the audio and image modalities, \texttt{FSSUAVL} jointly discriminates them by projecting them into a common embedding space using contrastive SSL. This extends the utility of \texttt{FSSUAVL} to paired and unpaired audio and image recognition tasks. Our experiments with CNN and ViT demonstrate that \texttt{FSSUAVL} significantly improves performance across various image- and audio-based downstream tasks compared to using separate deep models for each modality. Additionally, \texttt{FSSUAVL}'s capacity to learn multimodal feature representations allows for integrating auxiliary information, if available, to enhance recognition accuracy.

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