Predicting slaughter weight in pigs with regression tree ensembles

A. Alsahaf, G. Azzopardi, B. Ducro, R.F. Veerkamp, N. Petkov

Research output: Chapter in Book/Report/Conference proceedingConference paper

Abstract

Domestic pigs vary in the age at which they reach slaughter weight even under the controlled conditions of modern pig farming. Early and accurate estimates of when a pig will reach slaughter weight can lead to logistic efficiency in farms. In this study, we compare four methods in predicting the age at which a pig reaches slaughter weight (120 kg). Namely, we compare the following regression tree-based ensemble methods: random forest (RF), extremely randomized trees (ET), gradient boosted machines (GBM), and XGBoost. Data from 32979 pigs is used, comprising a combination of phenotypic features and estimated breeding values (EBV). We found that the boosting ensemble methods, GBM and XGBoost, achieve lower prediction errors than the parallel ensembles methods, RF and ET. On the other hand, RF and ET have fewer parameters to tune, and perform adequately well with default parameter settings.

Original languageEnglish
Title of host publicationApplications of Intelligent Systems - Proceedings of the 1st International APPIS Conference 2018, APPIS 2018
EditorsNicolai Petkov, Nicola Strisciuglio, Carlos M. Travieso-Gonzalez
PublisherIOS Press
Pages1-9
ISBN (Electronic)9781614999287
DOIs
Publication statusPublished - Jan 2018
Event1st International Conference on Applications of Intelligent Systems, APPIS 2018 - Las Palmas de Gran Canaria, Spain
Duration: 10 Jan 201812 Jan 2018

Publication series

NameFrontiers in Artificial Intelligence and Applications
Volume310
ISSN (Print)0922-6389

Conference

Conference1st International Conference on Applications of Intelligent Systems, APPIS 2018
CountrySpain
CityLas Palmas de Gran Canaria
Period10/01/1812/01/18

Keywords

  • Animal production
  • Ensemble learning
  • Gradient boosting
  • Pigs
  • Random forest
  • XGBoost

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  • Cite this

    Alsahaf, A., Azzopardi, G., Ducro, B., Veerkamp, R. F., & Petkov, N. (2018). Predicting slaughter weight in pigs with regression tree ensembles. In N. Petkov, N. Strisciuglio, & C. M. Travieso-Gonzalez (Eds.), Applications of Intelligent Systems - Proceedings of the 1st International APPIS Conference 2018, APPIS 2018 (pp. 1-9). (Frontiers in Artificial Intelligence and Applications; Vol. 310). IOS Press. https://doi.org/10.3233/978-1-61499-929-4-1