arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2602.19702cs.IRcs.AI
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DReX:一种基于深度学习的可解释多模态推荐框架

DReX: An Explainable Deep Learning-based Multimodal Recommendation Framework

University of Delhi, Delhi, India(德里大学);National Institute of Technology, Warangal, India(印度战争格尔国家理工学院)

Adamya Shyam, Venkateswara Rao Kagita, Bharti Rana, Vikas Kumar

AI总结:

DReX通过多模态反馈的交互级特征逐步细化用户和物品表示,提升推荐系统的可解释性和性能。

摘要:

多模态推荐系统利用多种数据源,如用户交互、内容特征和上下文信息,以解决冷启动和数据稀疏等挑战。然而,现有方法常面临一个或多个关键限制:孤立处理不同模态、训练期间要求每个交互都具备完整的多模态数据,或独立学习用户和物品表示。这些因素导致了复杂性增加和用户与物品嵌入之间可能的不一致。为了解决这些挑战,我们提出了DReX,一种统一的多模态推荐框架,通过利用多模态反馈的交互级特征逐步细化用户和物品表示。我们的模型采用门控递归单元,选择性地将这些细粒度特征整合到全局表示中。这种增量更新机制提供了三个关键优势:(1)同时建模细微的交互细节和更广泛的偏好模式;(2)消除了单独提取用户和物品特征过程的需要,导致其学习表示的增强对齐;(3)对变化或缺失的模态具有内在的鲁棒性。我们评估了所提出方法在三个包含评论和评分作为交互模态的真实世界数据集上的性能。通过将评论文本作为一种模态,我们的方法自动为用户和物品生成可解释的关键词档案,这些档案补充推荐过程,提供可解释的偏好指标。实验结果表明,我们的方法在所有评估数据集上均优于最先进的方法。

英文摘要:

Multimodal recommender systems leverage diverse data sources, such as user interactions, content features, and contextual information, to address challenges like cold-start and data sparsity. However, existing methods often suffer from one or more key limitations: processing different modalities in isolation, requiring complete multimodal data for each interaction during training, or independent learning of user and item representations. These factors contribute to increased complexity and potential misalignment between user and item embeddings. To address these challenges, we propose DReX, a unified multimodal recommendation framework that incrementally refines user and item representations by leveraging interaction-level features from multimodal feedback. Our model employs gated recurrent units to selectively integrate these fine-grained features into global representations. This incremental update mechanism provides three key advantages: (1) simultaneous modeling of both nuanced interaction details and broader preference patterns, (2) eliminates the need for separate user and item feature extraction processes, leading to enhanced alignment in their learned representation, and (3) inherent robustness to varying or missing modalities. We evaluate the performance of the proposed approach on three real-world datasets containing reviews and ratings as interaction modalities. By considering review text as a modality, our approach automatically generates interpretable keyword profiles for both users and items, which supplement the recommendation process with interpretable preference indicators. Experiment results demonstrate that our approach outperforms state-of-the-art methods across all evaluated datasets.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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