通过多跳图学习捕捉用户意图演化,提升手机应用预测准确率。
MISApp: Multi-Hop Intent-Aware Session Graph Learning for Next App Prediction
- 构建多跳会话图,捕捉不同层级的使用依赖关系。
- 在真实数据集上显著优于基线模型,冷启动下表现更优。
- 无需用户历史画像,适合隐私敏感或新用户场景。
预测用户下一时刻将打开的移动应用对主动式服务至关重要。然而,在现实场景中,用户意图可能在短时间内快速变化,且用户历史行为记录常稀疏或缺失,尤其在冷启动情况下。现有方法主要将应用使用建模为序列行为或局部会话转移,难以捕捉高阶结构依赖与会话意图演化。为此,我们提出MISApp——一种基于多跳会话图学习的无用户画像框架。该框架构建多跳会话图以捕获不同结构范围内的转移依赖,通过轻量图传播学习会话表示,融合时间与空间上下文刻画会话状态,并从近期交互中捕捉意图演化。在两个真实世界应用使用数据集上的实验表明,MISApp在标准与冷启动设置下均持续优于对比基线,同时保持良好的准确率与实用性平衡。进一步分析显示,学习到的各跳注意力权重与结构相关性高度一致,为多跳建模策略的有效性提供了可解释证据。
原文摘要 · Abstract (English)
Predicting the next mobile app a user will launch is essential for proactive mobile services. Yet accurate prediction remains challenging in real-world settings, where user intent can shift rapidly within short sessions and user-specific historical profiles are often sparse or unavailable, especially under cold-start conditions. Existing approaches mainly model app usage as sequential behavior or local session transitions, limiting their ability to capture higher-order structural dependencies and evolving session intent. To address this issue, we propose MISApp, a profile-free framework for next app prediction based on multi-hop session graph learning. MISApp constructs multi-hop session graphs to capture transition dependencies at different structural ranges, learns session representations through lightweight graph propagation, incorporates temporal and spatial context to characterize session conditions, and captures intent evolution from recent interactions. Experiments on two real-world app usage datasets show that MISApp consistently outperforms competitive baselines under both standard and cold-start settings, while maintaining a favorable balance between predictive accuracy and practical efficiency. Further analyses show that the learned hop-level attention weights align well with structural relevance, offering interpretable evidence for the effectiveness of the proposed multi-hop modeling strategy.
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