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arXiv 2402.11950q-bio.BMcs.LGphysics.chem-ph
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一种结合VAE与Transformer用于未见结构生成的新型分子生成模型

A novel molecule generative model of VAE combined with Transformer for unseen structure generation

The University of Tokyo(东京大学)

Yasuhiro Yoshikai, Tadahaya Mizuno, Shumpei Nemoto, Hiroyuki Kusuhara

AI总结:

提出一种通过结构与参数优化融合VAE和Transformer的分子生成模型,在保持生成性能的同时显著提升未见结构分子生成能力,并验证了约32维潜在表示的性质预测与压缩潜力。

摘要:

近年来,利用深度学习进行分子生成在药物发现领域得到了积极研究。在该领域中,Transformer和VAE作为强大模型被广泛使用,但由于二者在结构和性能上的不匹配,它们很少被结合使用。本研究提出了一种模型,通过在处理多样化分子时进行结构和参数优化,将这两种模型结合起来。所提出的模型在分子生成方面表现出与现有模型相当的性能,并且在生成具有未见结构的分子方面表现出迄今为止显著优越的性能。该VAE模型的另一个优势是从潜在表示生成分子,因此可以借此轻松预测分子性质或对其进行条件化;事实上,我们证明该模型的潜在表示能够成功预测分子性质。消融研究表明,在生成新颖分子方面,VAE优于语言模型等其他生成模型。研究还表明,潜在表示可以缩短至约32维变量而不会损失重建效果,这表明有可能构建比现有分子描述符或模型小得多的描述符或模型。本研究有望为虚拟筛选提供包含多种多样化合物的虚拟化学库,并实现高效筛选。

英文摘要:

Recently, molecule generation using deep learning has been actively investigated in drug discovery. In this field, Transformer and VAE are widely used as powerful models, but they are rarely used in combination due to structural and performance mismatch of them. This study proposes a model that combines these two models through structural and parameter optimization in handling diverse molecules. The proposed model shows comparable performance to existing models in generating molecules, and showed by far superior performance in generating molecules with unseen structures. Another advantage of this VAE model is that it generates molecules from latent representation, and therefore properties of molecules can be easily predicted or conditioned with it, and indeed, we show that the latent representation of the model successfully predicts molecular properties. Ablation study suggested the advantage of VAE over other generative models like language model in generating novel molecules. It also indicated that the latent representation can be shortened to ~32 dimensional variables without loss of reconstruction, suggesting the possibility of a much smaller molecular descriptor or model than existing ones. This study is expected to provide a virtual chemical library containing a wide variety of compounds for virtual screening and to enable efficient screening.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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