不确定性量化和标记不可靠的预测,用于预测小分子的质谱相关性质,使用机器学习
Dmitriy D Matyushin1, Ivan A Burov1, Anastasia Yu Sholokhova1
1A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospect, GSP-1, 119071 Moscow, Russia.
International journal of molecular sciences
|December 17, 2024
概括
这项研究引入了一种新的方法,用于估计分子识别中的预测不确定性. 通过结合集合模型的传播,分子相似性和数据聚类,研究人员可以更好地评估代谢学和染色学预测的可靠性.
科学领域:
- 分析化学 分析化学
- 计算化学的计算化学
- 化学信息学 化学信息学
背景情况:
- 质谱识别在代谢学中至关重要,通常通过预测诸如色谱保留等分子性质来增强.
- 目前用于预测的机器学习模型通常缺乏强大的不确定性估计.
- 准确的不确定性量化对于可靠的分子识别和数据解释至关重要.
研究的目的:
- 开发和验证一种用于评估分子性质预测中的预测不确定性的方法.
- 提高用于质谱识别和代谢学中的机器学习模型的可靠性.
- 将多个不确定性指标整合到统一的评估框架中.
主要方法:
- 利用集体模型预测传播作为一个不确定性指标.
- 使用分子描述符的欧几里德距离来量化分子相似性.
- 纳入数据集集群,以确定潜在的异常值或不确定的数据点.
- 开发了使用这些因素来预测预测可靠性的分类模型.
主要成果:
- 在0.73和0.82之间的接收器操作曲线 (AUC) 值下实现的区域,用于预测不可靠的预测.
- 证明了组合传播,分子相似性和聚类用于不确定性评估的有效性.
- 成功预测一个预测是否属于各种染色体和离子移动性任务中最差15%的结果.
结论:
- 拟议的方法有效量化了分子性质预测任务中的预测不确定性.
- 整合合体扩散,分子相似性和聚类,为不确定性估计提供了一个全面的方法.
- 这项工作提高了分析化学和代谢学中机器学习预测的可靠性.
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