首次系统评估3D几何信息对RNA性质预测的提升作用。
Beyond Sequence: Impact of Geometric Context for RNA Property Prediction
- 引入2D/3D结构标注数据集,显式建模RNA几何信息。
- 几何模型平均降低12%预测误差,低数据下表现更优。
- 适合关注RNA结构与功能关系的研究者使用。
准确预测RNA性质(如稳定性与相互作用)对理解生物过程和开发基于RNA的疗法至关重要。RNA结构可表示为1D序列、2D拓扑图或3D全原子模型,每种形式提供不同功能见解。现有方法多集中于1D序列模型,忽略了2D与3D几何提供的上下文信息。本研究首次系统评估将显式2D/3D几何信息融入RNA性质预测的效果,不仅考察性能,还考虑真实场景中的数据有限、部分标注、测序噪声与计算效率问题。为此,我们构建了新的RNA数据集,包含增强的2D与3D结构标注,为模型评估提供资源。结果表明,显式编码几何信息的模型普遍优于序列模型,各类任务平均预测均方根误差(RMSE)降低约12%,在低数据量与部分标注情况下表现更佳。而忽略几何信息的序列模型在测序噪声下更具鲁棒性,但通常需2-5倍训练数据才能达到几何感知模型的性能。本研究揭示了不同表示方式在实际应用中的权衡,填补了深度学习模型在RNA任务评估中的关键空白。
原文摘要 · Abstract (English)
Accurate prediction of RNA properties, such as stability and interactions, is crucial for advancing our understanding of biological processes and developing RNA-based therapeutics. RNA structures can be represented as 1D sequences, 2D topological graphs, or 3D all-atom models, each offering different insights into its function. Existing works predominantly focus on 1D sequence-based models, which overlook the geometric context provided by 2D and 3D geometries. This study presents the first systematic evaluation of incorporating explicit 2D and 3D geometric information into RNA property prediction, considering not only performance but also real-world challenges such as limited data availability, partial labeling, sequencing noise, and computational efficiency. To this end, we introduce a newly curated set of RNA datasets with enhanced 2D and 3D structural annotations, providing a resource for model evaluation on RNA data. Our findings reveal that models with explicit geometry encoding generally outperform sequence-based models, with an average prediction RMSE reduction of around 12% across all various RNA tasks and excelling in low-data and partial labeling regimes, underscoring the value of explicitly incorporating geometric context. On the other hand, geometry-unaware sequence-based models are more robust under sequencing noise but often require around $2-5\times$ training data to match the performance of geometry-aware models. Our study offers further insights into the trade-offs between different RNA representations in practical applications and addresses a significant gap in evaluating deep learning models for RNA tasks.
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