Cited by 33Computational Drug Discovery MethodsMachine Learning in Materials ScienceProtein Degradation and Inhibitors

Adding Stochastic Negative Examples into Machine Learning Improves Molecular Bioactivity Prediction

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Cáceres, Elena L., Mew, Nicholas C., Keiser, Michael J.·2020·Journal of Chemical Information and Modeling

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Abstract

Multitask deep neural networks learn to predict ligand–target binding by example, yet public pharmacological data sets are sparse, imbalanced, and approximate. We constructed two hold-out benchmarks to approximate temporal and drug-screening test scenarios, whose characteristics differ from a random split of conventional training data sets. We developed a pharmacological data set augmentation procedure, Stochastic Negative Addition (SNA), which randomly assigns untested molecule–target pairs as transient negative examples during training. Under the SNA procedure, drug-screening benchmark performance increases from R2 = 0.1926 ± 0.0186 to 0.4269 ± 0.0272 (122%). This gain was accompanied by a modest decrease in the temporal benchmark (13%). SNA increases in drug-screening performance were consistent for classification and regression tasks and outperformed y-randomized controls. Our results highlight where data and feature uncertainty may be problematic and how leveraging uncertainty into training improves predictions of drug–target relationships.

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  1. [13](13) Johnson, M. A.; Maggiora, G. M.; American Chemical Society. Meeting. Concepts and Applications of Molecular Similarity ; Wiley-Interscience, 1990. -
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Authors
Cáceres, E. L., Mew, N. C., & Keiser, M. J.
Affiliations
  • University of California, San Francisco , , 675 Nelson Rising Ln NS 416A , , ,
  • University of California, San Francisco (US)
Corresponding author
Keiser, Michael J.
Venue
Journal of Chemical Information and Modeling
Published
2020-11-27
Volume
60
Issue
12
Pages
5957-5970
ISSN
  • 1549-9596 (ISSN-L)
  • 1549-960X
OpenAlex
W3109353507
Cited by
33
References
54
Citations by year
2026: 3 · 2025: 12 · 2024: 2 · 2023: 7 · 2022: 5 · 2021: 3 · 2020: 1
FWCI
1.99
Type
journal article
Language
en
Open access
Locations
  • Journal of Chemical Information and Modeling (publishedVersion)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
Funders
  • Howard Hughes Medical Institute
  • Division of Graduate Education (1650113)
  • Silicon Valley Community Foundation (2018-191905)
  • Sandler Foundation
Topics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Physical Sciences › Materials Science › Materials Chemistry › Machine Learning in Materials Science
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Degradation and Inhibitors
Keywords
data augmentation, class imbalance
MeSH terms
Machine Learning, Neural Networks, Computer

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