SC-GIR: Goal-oriented Semantic Communication via Invariant Representation Learning

• URL: http://arxiv.org/abs/2509.01119v1
• Date: Mon, 01 Sep 2025 04:29:43 GMT
• Title: SC-GIR: Goal-oriented Semantic Communication via Invariant Representation Learning
• Authors: Senura Hansaja Wanasekara, Van-Dinh Nguyen, Kok-Seng, M. -Duong Nguyen, Symeon Chatzinotas, Octavia A. Dobre,
• Abstract summary: Goal-oriented semantic communication (SC) aims to revolutionize communication systems by transmitting only task-essential information.<n>We propose a novel framework called Goal-oriented Invariant Representation-based SC (SC-GIR) for image transmission.
• Score: 59.45312293893698
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Goal-oriented semantic communication (SC) aims to revolutionize communication systems by transmitting only task-essential information. However, current approaches face challenges such as joint training at transceivers, leading to redundant data exchange and reliance on labeled datasets, which limits their task-agnostic utility. To address these challenges, we propose a novel framework called Goal-oriented Invariant Representation-based SC (SC-GIR) for image transmission. Our framework leverages self-supervised learning to extract an invariant representation that encapsulates crucial information from the source data, independent of the specific downstream task. This compressed representation facilitates efficient communication while retaining key features for successful downstream task execution. Focusing on machine-to-machine tasks, we utilize covariance-based contrastive learning techniques to obtain a latent representation that is both meaningful and semantically dense. To evaluate the effectiveness of the proposed scheme on downstream tasks, we apply it to various image datasets for lossy compression. The compressed representations are then used in a goal-oriented AI task. Extensive experiments on several datasets demonstrate that SC-GIR outperforms baseline schemes by nearly 10%,, and achieves over 85% classification accuracy for compressed data under different SNR conditions. These results underscore the effectiveness of the proposed framework in learning compact and informative latent representations.

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