Academic Journal
Multi-metric evaluation and parametric optimization of stochastic gradient boosting machines for genomic prediction and selection in wheat (Triticum aestivum) breeding.
| Τίτλος: | Multi-metric evaluation and parametric optimization of stochastic gradient boosting machines for genomic prediction and selection in wheat (Triticum aestivum) breeding. |
|---|---|
| Συγγραφείς: | Munroe HN; Division of Plant Breeding Methodology, Department of Crop Sciences, University of Göttingen, Carl-Sprengel-Weg 1, Göttingen 37075, Lower Saxony, Germany., Osatohanmwen BE; Division of Plant Breeding Methodology, Department of Crop Sciences, University of Göttingen, Carl-Sprengel-Weg 1, Göttingen 37075, Lower Saxony, Germany.; Center for Integrated Breeding Research, University of Göttingen, Albrecht-Thaer-Weg 3, Göttingen 37075, Lower Saxony, Germany., Reza Sharifi A; Center for Integrated Breeding Research, University of Göttingen, Albrecht-Thaer-Weg 3, Göttingen 37075, Lower Saxony, Germany.; Division of Animal Breeding and Genetics, Department of Animal Sciences, University of Göttingen, Albrecht-Thaer-Weg 3, Göttingen 37075, Lower Saxony, Germany. |
| Πηγή: | G3 (Bethesda, Md.) [G3 (Bethesda)] 2026 Jul 06; Vol. 16 (7). |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Oxford University Press Country of Publication: England NLM ID: 101566598 Publication Model: Print Cited Medium: Internet ISSN: 2160-1836 (Electronic) Linking ISSN: 21601836 NLM ISO Abbreviation: G3 (Bethesda) Subsets: MEDLINE |
| Imprint Name(s): | Publication: 2021- : [Oxford] : Oxford University Press Original Publication: Bethesda, MD : Genetics Society of America, 2011- |
| Ιατρικοί όροι (MeSH): | Triticum*/genetics , Genomics*/methods , Selection, Genetic* , Plant Breeding* , Boosting Machine Learning Algorithms*, Genome, Plant ; Hybridization, Genetic |
| Περίληψη: | Machine learning (ML) models with stochastic and nondeterministic characteristics are increasingly used for genomic prediction in plant breeding, but evaluation often neglects important aspects like prediction stability and ranking performance. This study addresses this gap by evaluating how 2 hyperparameters of a Gradient Boosting Machine (GBM), learning rate (v) and boosting rounds (ntrees), impact stability and multimetric predictive performance for cross-season, cross-environment prediction in a MAGIC wheat population. Using a grid search of 36 parameter combinations, we evaluated 4 agronomic traits with 5 metrics: Pearson's r, area under the curve (AUC), normalized discounted cumulative gain (NDCG), and the intraclass correlation coefficient (ICC), and Fleiss' κ for stability. Our findings show that a low learning rate combined with a high number of boosting rounds substantially improves prediction stability (ICC > 0.98) and selection stability (Fleiss' κ > 0.80), while reducing train-test performance gaps. This combination produced concurrent improvements for predictive accuracy (r), classification accuracy (AUC), and ranking efficiency (NDCG), though optimal settings were trait-dependent. Despite moderate Pearson's r in this challenging cross-season, cross-environment prediction scenario, NDCG remained high (>0.85), indicating a strong ability to rank top-performing entries. In benchmark comparisons conducted within this stump-based additive GBM setting, selected GBM configurations were broadly comparable to rrBLUP, with modest trait-dependent differences across metrics. Ultimately, prioritizing stability when tuning GBMs effectively yields reproducible cross-environment predictions with improved accuracy and top-end ranking performance. (© The Author(s) 2026. Published by Oxford University Press on behalf of The Genetics Society of America.) |
| Contributed Indexing: | Keywords: cross-environment prediction; genomic prediction; gradient boosting machine; hyperparameter optimization; model stochasticity; wheat (Triticum aestivum) MAGIC population |
| Entry Date(s): | Date Created: 20260523 Date Completed: 20260723 Latest Revision: 20260726 |
| Update Code: | 20260726 |
| PubMed Central ID: | PMC13334169 |
| DOI: | 10.1093/g3journal/jkag127 |
| PMID: | 42175721 |
| Βάση Δεδομένων: | MEDLINE |
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