Deep learning in computational biochemistry has traditionally focused on molecular graphs neural representations; however, recent advances in language models highlight how much scientific knowledge is encoded in text. To bridge these two modalities, we investigate how molecular property information can be transferred from natural language to graph representations. We study property prediction performance gains after using contrastive learning to align neural graph representations with representations of textual descriptions of their characteristics. We implement neural relevance scoring strategies to improve text retrieval, introduce a novel chemically-valid molecular graph augmentation strategy inspired by organic reactions, and demonstrate improved performance on downstream MoleculeNet property classification tasks. We achieve a +4.26% AUROC gain versus models pre-trained on the graph modality alone, and a +1.54% gain compared to recently proposed molecular graph/text contrastively trained MoMu model (Su et al. 2022).

将自然语言和图形表示相结合，通过对齐神经图形表示和特性文本描述的表示，提高了下游分子属性分类任务的性能，实现了与仅以图形方式进行预训练的模型相比的+4.26% AUROC的增益，并相对于最近提出的分子图/文本对比训练的MoMu模型(Su et al. 2022)的+1.54%增益。

用多模态对比学习从自然语言中提取分子性质