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arXiv 2006.15426cs.LGphysics.chem-phstat.ML
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分子编辑图注意力网络:将化学反应建模为图编辑序列

Molecule Edit Graph Attention Network: Modeling Chemical Reactions as Sequences of Graph Edits

Centre of New Technologies, University of Warsaw(华沙大学新技术中心);Institute of Organic Chemistry, Polish Academy of Sciences(波兰科学院有机化学研究所)

Mikołaj Sacha, Mikołaj Błaż, Piotr Byrski, Paweł Dąbrowski-Tumański, Mikołaj Chromiński, Rafał Loska, Paweł Włodarczyk-Pruszyński, Stanisław Jastrzębski

摘要:

自动化合成规划的核心挑战是能够生成和预测各种化学反应的结果。特别是,在许多情况下,由于额外的限制,最可能的合成途径无法应用,这需要提出替代化学反应。考虑到这一点,我们提出了分子编辑图注意力网络(MEGAN),这是一种端到端的编码器-解码器神经模型。MEGAN的灵感来自于将化学反应表达为一系列图形编辑的模型,类似于箭头推动形式主义。我们将该模型扩展到逆合成预测(预测给定化学反应产物的底物),并将其扩展到大型数据集。我们认为,将反应表示为一系列编辑使MEGAN能够有效地探索合理的化学反应空间,保持以端到端方式建模反应的灵活性,并在标准基准中实现最先进的准确性。代码和训练模型可在https://github.com/molecule-one/megan上在线获得。

英文摘要:

The central challenge in automated synthesis planning is to be able to generate and predict outcomes of a diverse set of chemical reactions. In particular, in many cases, the most likely synthesis pathway cannot be applied due to additional constraints, which requires proposing alternative chemical reactions. With this in mind, we present Molecule Edit Graph Attention Network (MEGAN), an end-to-end encoder-decoder neural model. MEGAN is inspired by models that express a chemical reaction as a sequence of graph edits, akin to the arrow pushing formalism. We extend this model to retrosynthesis prediction (predicting substrates given the product of a chemical reaction) and scale it up to large datasets. We argue that representing the reaction as a sequence of edits enables MEGAN to efficiently explore the space of plausible chemical reactions, maintaining the flexibility of modeling the reaction in an end-to-end fashion, and achieving state-of-the-art accuracy in standard benchmarks. Code and trained models are made available online at https://github.com/molecule-one/megan.

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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