用拓扑指数+机器学习预测药物物化性质,提升研发效率
Linear to Neural Networks Regression: QSPR of Drugs via Degree-Distance Indices
- 结合原子属性加权的度-距离拓扑指数,构建分子特征
- 神经网络比线性模型更准确预测166种药物的物化性质
- 适合药化研究者快速筛选分子,节省实验成本
本研究通过定量结构-性质关系(QSPR)分析,探索药物分子物理性质与其拓扑指数之间的关联,采用机器学习方法。以往研究多关注基于度的拓扑指数,本文则对166种药物分子计算了度-距离型拓扑指数,并引入六种原子属性(原子序数、原子半径、原子质量、密度、电负性、电离能)进行顶点-边加权。同时比较了线性模型(线性回归、Lasso、Ridge)与非线性方法(随机森林、XGBoost、神经网络)在预测分子性质上的表现。结果表明,该类拓扑指数能有效预测特定物化性质,验证了计算方法在分子性质预测中的实用性。研究提出将拓扑指数与机器学习结合的新思路,可显著提升预测精度,有助于药物发现与开发。该方法能在实验前为化学家提供分子行为的初步洞察,优化化学生物信息学研究中的资源分配。
原文摘要 · Abstract (English)
This study conducts a Quantitative Structure Property Relationship (QSPR) analysis to explore the correlation between the physical properties of drug molecules and their topological indices using machine learning techniques. While prior studies in drug design have focused on degree-based topological indices, this work analyzes a dataset of 166 drug molecules by computing degree-distance-based topological indices, incorporating vertex-edge weightings with respect to different six atomic properties (atomic number, atomic radius, atomic mass, density, electronegativity, ionization). Both linear models (Linear Regression, Lasso, and Ridge Regression) and nonlinear approaches (Random Forest, XGBoost, and Neural Networks) were employed to predict molecular properties. The results demonstrate the effectiveness of these indices in predicting specific physicochemical properties and underscore the practical relevance of computational methods in molecular property estimation. The study provides an innovative perspective on integrating topological indices with machine learning to enhance predictive accuracy, highlighting their potential application in drug discovery and development processes. This predictive may also explain that establishing a reliable relationship between topological indices and physical properties enables chemists to gain preliminary insights into molecular behavior before conducting experimental analyses, thereby optimizing resource utilization in cheminformatics research.
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