Machine learning algorithms to predict core, skin, and hair-coat temperatures of piglets
| Autor: | Alex Sandro Campos Maia, Michael T. Gorczyca, Hugo Fernando Maia Milan, Kifle G. Gebremedhin |
|---|---|
| Přispěvatelé: | Cornell Univ, Universidade Estadual Paulista (Unesp) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Generalized linear model
Predictor variables Horticulture Bioenergetics Machine learning computer.software_genre Range (statistics) Mathematics business.industry 0402 animal and dairy science Empirical modelling Temperature Forestry 04 agricultural and veterinary sciences 040201 dairy & animal science Computer Science Applications Random forest Core (game theory) Piglets Air temperature 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Deep neural networks Precision livestock farming Artificial intelligence business Agronomy and Crop Science Algorithm computer |
| Zdroj: | Web of Science Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2018-11-26T16:04:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-08-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) USDA/Hatch (Washington, DC) funds as part of the Cornell University Internal-body (core) and surface temperatures of livestock are important information that indicate heat stress status and comfort of animals. Previous studies focused on developing mechanistic and empirical models to predict these temperatures. Mechanistic models based on bioenergetics of animals often require parameters that may be difficult to obtain (e.g., thickness of internal tissues). Empirical models, on the other hand, are databased and often assume linear relationships between predictor (e.g., air temperature) and response (e.g., internal-body temperature) variables although, from the theory of bioenergetics, the relationship between the predictor and the response variables is non-linear. One alternative to consider non-linearity is to use machine learning algorithms to predict physiological temperatures. Unlike mechanistic models, machine learning algorithms do not depend on biophysical parameters, and, unlike linear empirical models, machine learning algorithms automatically select the predictor variables and find non-linear functions between predictor and response variables. In this paper, we tested four different machine learning algorithms to predict rectal (T-r), skin-surface (T-s), and hair-coat surface (T-h) temperatures of piglets based on environmental data. From the four algorithms considered, deep neural networks provided the best prediction for T-r with an error of 0.36%, gradient boosted machines provided the best prediction for T-s with an error of 0.62%, and random forests provided the best predictions for T-h with an error of 1.35%. These three algorithms were robust for a wide range of inputs. The fourth algorithm, generalized linear regression, predicted at higher errors and was not robust for a wide range of inputs. This study supports the use of machine learning algorithms (specifically deep neural networks, gradient boosted machines, and random forests) to predict physiological temperature responses of piglets. Cornell Univ, Dept Biol & Environm Engn, Ithaca, NY 14853 USA State Univ Sao Paulo, Lab Anim Biometeorol, Dept Anim Sci, Fac Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil State Univ Sao Paulo, Lab Anim Biometeorol, Dept Anim Sci, Fac Agr & Vet Sci, BR-14884900 Jaboticabal, SP, Brazil CNPq: 203312/2014-7 FAPESP: 17.519/14 USDA/Hatch (Washington, DC) funds as part of the Cornell University: W-3173 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|