Artículo
Discriminative power of acoustic features for jaw movement classification in cattle and sheep
Galli, Julio Ricardo; Milone, Diego Humberto
; Cangiano, Carlos Alberto; Martínez, César Ernesto; Lacambra, Emilio; Chelotti, Jose Omar
; Rufiner, Hugo Leonardo
Fecha de publicación:
07/2019
Editorial:
A B Academic Publisher
Revista:
Bioacustics
ISSN:
0952-4622
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Measuring foraging behaviour and pasture intake of ruminants is useful but difficult. Acoustic monitoring is one of the most promising methods for this task. In this work, we test its potential to classify jaw movements (JM) according to type (bite, chew, chew-bite), activity (grazing or rumination), and forage species being consumed. Experiments with cows and sheep grazing and ruminating several forages were conducted. First, each JM was manually identified, classified and described by two sets of sound features: i) one containing energy bands of the spectrum (EB), and ii) one containing four complementary (or global) variables (Cv). Two models were evaluated, one with EB alone and the other one combining EB and Cv. Jaw movements were correctly classified by type with 73.0% and 78.5% average accuracy. Accuracy wasbetter for cows than sheep (85 vs 66%). Simultaneous identification of the type of JM and plant species was about 78%. Classification accuracy of activity based on chews averaged 68.5% and 77.0% for rumination and grazing. Models including global variables performed better than using only the spectrum. Acoustic monitoring is a very promising method for further development, particularly to study diet selection.
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Articulos(SINC(I))
Articulos de INST. DE INVESTIGACION EN SEÑALES, SISTEMAS E INTELIGENCIA COMPUTACIONAL
Articulos de INST. DE INVESTIGACION EN SEÑALES, SISTEMAS E INTELIGENCIA COMPUTACIONAL
Citación
Galli, Julio Ricardo; Milone, Diego Humberto; Cangiano, Carlos Alberto; Martínez, César Ernesto; Lacambra, Emilio; et al.; Discriminative power of acoustic features for jaw movement classification in cattle and sheep; A B Academic Publisher; Bioacustics; 7-2019; 1-15
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