Maximum a posteriori Threshold Genomic Prediction Model for Ordinal Traits

Copyright © 2020 Montesinos-Lopez et al..

Due to the ever-increasing data collected in genomic breeding programs, there is a need for genomic prediction models that can deal better with big data. For this reason, here we propose a Maximum a posteriori Threshold Genomic Prediction (MAPT) model for ordinal traits that is more efficient than the conventional Bayesian Threshold Genomic Prediction model for ordinal traits. The MAPT performs the predictions of the Threshold Genomic Prediction model by using the maximum a posteriori estimation of the parameters, that is, the values of the parameters that maximize the joint posterior density. We compared the prediction performance of the proposed MAPT to the conventional Bayesian Threshold Genomic Prediction model, the multinomial Ridge regression and support vector machine on 8 real data sets. We found that the proposed MAPT was competitive with regard to the multinomial and support vector machine models in terms of prediction performance, and slightly better than the conventional Bayesian Threshold Genomic Prediction model. With regard to the implementation time, we found that in general the MAPT and the support vector machine were the best, while the slowest was the multinomial Ridge regression model. However, it is important to point out that the successful implementation of the proposed MAPT model depends on the informative priors used to avoid underestimation of variance components.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:10

Enthalten in:

G3 (Bethesda, Md.) - 10(2020), 11 vom: 05. Nov., Seite 4083-4102

Sprache:

Englisch

Beteiligte Personen:

Montesinos-López, Abelardo [VerfasserIn]
Gutierrez-Pulido, Humberto [VerfasserIn]
Montesinos-López, Osval Antonio [VerfasserIn]
Crossa, José [VerfasserIn]

Links:

Volltext

Themen:

Bayesian Threshold Genomic Prediction model
EM algorithm
GenPred
Genomic Prediction
Genomic selection
Journal Article
Maximum a posteriori estimation
Multinomial Ridge regression
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Shared data resources
Support vector machine

Anmerkungen:

Date Completed 21.06.2021

Date Revised 21.06.2021

published: Electronic

Citation Status MEDLINE

doi:

10.1534/g3.120.401733

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM315059168