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dc.contributor.authorWesterlund, Annie M.
dc.contributor.authorBarge, Bente Sirin
dc.contributor.authorMervin, Lewis
dc.contributor.authorGenheden, Samuel
dc.date.accessioned2024-03-26T10:01:37Z
dc.date.available2024-03-26T10:01:37Z
dc.date.issued2023-09-07
dc.description.abstractThe multi-step retrosynthesis problem can be solved by a search algorithm, such as Monte Carlo tree search (MCTS). The performance of multistep retrosynthesis, as measured by a trade-off in search time and route solvability, therefore depends on the hyperparameters of the search algorithm. In this paper, we demonstrated the effect of three MCTS hyperparameters (number of iterations, tree depth, and tree width) on metrics such as Linear integrated speed-accuracy score (LISAS) and Inverse efficiency score which consider both route solvability and search time. This exploration was conducted by employing three data-driven approaches, namely a systematic grid search, Bayesian optimization over an ensemble of molecules to obtain static MCTS hyperparameters, and a machine learning approach to dynamically predict optimal MCTS hyperparameters given an input target molecule. With the obtained results on the internal dataset, we demonstrated that it is possible to identify a hyperparameter set which outperforms the current AiZynthFinder default setting. It appeared optimal across a variety of target input molecules, both on proprietary and public datasets. The settings identified with the in-house dataset reached a solvability of 93 % and median search time of 151 s for the in-house dataset, and a 74 % solvability and 114 s for the ChEMBL dataset. These numbers can be compared to the current default settings which solved 85 % and 73 % during a median time of 110s and 84 s, for in-house and ChEMBL, respectively.en_US
dc.identifier.citationWesterlund, Barge, Mervin, Genheden. Data-driven approaches for identifying hyperparameters in multi-step retrosynthesis. Molecular Informatics. 2023;42en_US
dc.identifier.cristinIDFRIDAID 2189281
dc.identifier.doi10.1002/minf.202300128
dc.identifier.issn1868-1743
dc.identifier.issn1868-1751
dc.identifier.urihttps://hdl.handle.net/10037/33277
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalMolecular Informatics
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
dc.titleData-driven approaches for identifying hyperparameters in multi-step retrosynthesisen_US
dc.type.versionacceptedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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