用高斯过程回归和贝叶斯优化预测和优化牙科树脂复合材料的粘度
Tomoki Kohno1, Naoya Funayama1, Linghao Xiao1
1Joint Research Laboratory of Advanced Functional Materials Science, Graduate School of Dentistry, The University of Osaka, 1-8 Yamadaoka, Suita, Osaka 565-0871, Japan.
概括
机器学习,使用高斯过程回归 (GPR) 和贝叶斯优化 (BO),准确地预测和优化树脂复合材料粘度. 这种数据驱动的方法提高了牙科材料处理特性,用于临床使用.
科学领域:
- 材料科学 材料科学 材料科学
- 数据科学数据科学数据科学
- 生物材料工程 生物材料工程
背景情况:
- 牙科树脂复合材料需要特定的处理特性,如最佳粘度,用于临床应用.
- 优化复合配方的传统方法往往耗时,可能无法有效地探索整个配方空间.
研究的目的:
- 开发和验证使用高斯过程回归 (GPR) 和贝叶斯优化 (BO) 的机器学习框架.
- 预测和优化树脂复合材料的粘度在两个不同的剪速 (0.0106s-1和74.4s-1).
主要方法:
- 准备了54种树脂复合剂配方,使用不同的填充成分 (两个主要填充剂,烟).
- 粘度是用整体力学测量;用日志转换值作为GPR模型的目标,经过10倍交叉验证训练.
- 用贝叶斯优化 (BO) 和改进概率来确定从一个大候选池 (67,140) 中的最佳配方.
- 沙普利添加式解释 (SHAP) 分析用于特征解释.
主要成果:
- GPR模型显示了预测和实验粘度值之间的显著相关性 (p < 0.001).
- SHAP分析确定了影响粘度的关键配方参数:低剪速时的烟含量,高剪速时的主要填充剂颗粒大小/表面处理.
- 博成功优化了粘度,在七次代内实现了目标值,证明了公式空间的高效导航.
结论:
- 高斯过程回归 (GPR) 和贝叶斯优化 (BO) 为设计牙科树脂复合材料提供了强大的数据驱动方法.
- 这种框架可以合理优化质性质,这对于临床处理特征至关重要,如可塑性和可挤出性.
- 未来的工作应该涉及扩大数据集和整合多目标优化,以平衡粘度与其他关键材料特性.
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