[논문]Machine-guided representation for accurate graph-based molecular machine learning

Na, Gyoung S.; Chang, Hyunju; Kim, Hyun Woo

doi:10.1039/d0cp02709j

[해외논문] Machine-guided representation for accurate graph-based molecular machine learning

Physical chemistry chemical physics : PCCP, v.22 no.33, 2020년, pp.18526 - 18535

Na, Gyoung S. (Korea Research Institute of Chemical Technology (KRICT)) , Chang, Hyunju (Korea Research Institute of Chemical Technology (KRICT)) , Kim, Hyun Woo (Korea Research Institute of Chemical Technology (KRICT))

Abstract ▼ AI-Helper

In chemistry-related fields, graph-based machine learning has received significant attention as atoms and their chemical bonds in a molecule can be represented as a mathematical graph. However, many molecular properties are sensitive to changes in the molecular structure. For this reason, molecules have a mixed distribution for their molecular properties in molecular space, and it consequently makes molecular machine learning difficult. However, this problem has not been investigated in either chemistry or computer science. To tackle this problem, we propose a robust and machine-guided molecular representation based on deep metric learning (DML), which automatically generates an optimal representation for a given dataset. To this end, we first adopt DML for molecular machine learning by integrating it with graph neural networks (GNNs) and devising a new objective function for representation learning. In experimental evaluations, machine learning algorithms with the proposed method achieved better prediction accuracy than state-of-the-art GNNs. Furthermore, the proposed method was also effective on extremely small datasets, and this result is impressive because many real world applications suffer from a lack of training data.Graphic AbstractBased on the deep metric learning, a machine-guided representation is automatically optimized for any given dataset of molecular properties.

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DOI : 10.1039/D0CP02709J
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용어 설명: PCR은 세균 특이성이 있는 primer를 이용하여 적은 수의 세균이 있을지라도 쉽게 검출할 수 있는 유용한 방법이며, 이를 이용하여 구강 내 치면세균막이나 타액에서 직접 세균을 검출할 수 있게 되었다[8].

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