相关实验视频

Updated: Jan 17, 2026

Curation of Computational Chemical Libraries Demonstrated with Alpha-Amino Acids

Curation of Computational Chemical Libraries Demonstrated with Alpha-Amino Acids

Published on: April 13, 2022

MolContraCLIP:基于图形神经网络和CLIP模型的结构相似的分子检索算法

Huiwen Long¹, Yongquan Jiang¹, Yan Yang¹

¹School of Computing and Artificial Intelligence, Southwest Jiaotong University, Chengdu, 610036, Sichuan, China.

Journal of molecular graphics & modelling

|September 19, 2025

概括

这项研究引入了一种新的图形神经网络框架,该框架使用对比学习统一了2D和3D分子数据,改善了药物发现的分子相似性评估.

科学领域:

化学信息学化学信息学
机器学习机器学习
计算化学的计算化学

背景情况:

分子相似性评估对于药物发现和材料科学至关重要.
传统的方法很难有效地整合2D拓和3D几何分子信息.

研究的目的:

开发一个新的图形神经网络 (GNN) 框架,统一二维和三维分子表示.
为了适应分子数据的对比语言图像预训 (CLIP) 的交叉模式对齐策略.

主要方法:

一个双通道的GNN架构,使用图形同态网络 (GIN) 用于2D和图形注意网络 (GAT) 用于3D.
采用CLIP启发的对比学习策略与InfoNCE损失,在共享的潜空间中对齐2D和3D嵌入.
使用QM9数据集进行广泛的实验验证.

主要成果:

拟议的模型在分子相似性评估中明显优于传统的基于指纹的方法和纯GNN基线.
废除研究证实了跨模式对比学习在整合结构信息方面的有效性.
该框架在各种分子类型中展示了强大的通用性.

结论:

新的GNN框架成功地统一了2D和3D分子信息,推进了化学信息学中的多式模式表示学习.
这种先进的CLIP原则对非视觉领域的适应,为分子文本检索和药物设计开辟了新的可能性.

关键词:

3D 形状检索 3D 形状检索灵感来自于CLIP的模型跨模态分子对齐的分子对齐.图形神经网络 (GNN) 是一个神经网络.分子相似性评估分子相似性评估

更多相关视频

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Large-scale Reconstructions and Independent, Unbiased Clustering Based on Morphological Metrics to Classify Neurons in Selective Populations

Published on: February 15, 2017

Modeling the Functional Network for Spatial Navigation in the Human Brain

Modeling the Functional Network for Spatial Navigation in the Human Brain

Published on: October 13, 2023

相关概念视频

Molecular Models

Molecular Models

Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.

Molecular Shapes

Molecular Shapes

Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...