arXiv:2506.11538cs.IR2025-06

拆解用户与物品双视角意图,提升推荐系统精准度与可解释性。

Dual-Perspective Disentangled Multi-Intent Alignment for Enhanced Collaborative Filtering

  • 从用户和物品双视角建模交互,分离细粒度意图
  • 通过层级原型感知编码器实现意图对齐,提升稀疏场景表现
  • 框架灵活易扩展,适合追求可解释推荐的工业应用

个性化推荐需捕捉用户-物品交互背后的复杂潜在意图。现有结构化模型常无法保留视角依赖的交互语义,且仅提供间接监督来对齐用户与物品意图,缺乏显式的交互级约束,导致异构信号纠缠、语义模糊,在稀疏交互下鲁棒性差且可解释性有限。为此,我们提出DMICF:一种双视角解耦多意图对齐协同过滤框架。该框架从互补的用户与物品中心视角建模交互,采用宏观-微观原型感知变分编码器分离细粒度潜在意图。交互级监督强制用户与物品意图在维度上对齐,稳固潜在因子并促进其协同涌现。关键组件架构灵活,性能对模块具体实现不敏感。我们提供理论分析说明原型感知条件如何缓解后验坍缩问题,重建目标则促进正负交互间的意图级对比对齐。多基准测试显示,相较强基线持续提升性能,消融实验验证各核心组件有效性。

原文摘要 · Abstract (English)

Personalized recommendation requires capturing the complex latent intents underlying user-item interactions. Existing structural models, however, often fail to preserve perspective-dependent interaction semantics and provide only indirect supervision for aligning user and item intents, lacking explicit interaction-level constraints. This entangles heterogeneous interaction signals, leading to semantic ambiguity, reduced robustness under sparse interactions, and limited interpretability. To address these issues, we propose DMICF, a Dual-Perspective Disentangled Multi-Intent framework for collaborative filtering. DMICF models interactions from complementary user- and item-centric perspectives and employs a macro-micro prototype-aware variational encoder to disentangle fine-grained latent intents. Interaction-level supervision enforces dimension-wise alignment between user and item intents, grounding latent factors and enabling their collaborative emergence. Importantly, each component is architecturally flexible, and performance is robust to specific module instantiations. We offer a theoretical analysis to help explain how prototype-aware conditioning may alleviate posterior collapse, while the reconstruction objective promotes intent-wise contrastive alignment between positive and negative interactions. Extensive experiments on multiple benchmarks demonstrate consistent improvements over strong baselines, with ablations validating each core component.

协同过滤意图解耦推荐系统可解释性

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