Using Shannon Entropy on Measuring the Individual Variability in the Rufous-bellied Thrush Turdus rufiventris Vocal Communication

Silva, Maria Luisa da; Piqueira, José Roberto Castilho; Vielliard, Jacques

doi:10.1006/jtbi.2000.2155

Cited by 39 publications

(29 citation statements)

References 6 publications

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“…Such adaptation involves a variety of strategies generated to solve individual motor problems. As an example, the studies of [8], [9], [19] claimed that a golfer faces several constraints, being susceptible to a high variability of practice conditions that require systematic adaptation mechanisms. The athlete is then faced with multiple possible ball trajectories (e.g., either linear or curvilinear), slopes (e.g., either ascending or descending), adverse weather conditions (e.g., sun, rain, wind and snow) and different greens (e.g., short grass, high grass, ill-treated grass, grass with holes and sand, among others).…”

Section: Related Workmentioning

confidence: 99%

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On an Entropy-based Performance Analysis in Sports

Couceiro

Clemente

Dias

et al. 2014

Proceedings of 1st International Electronic Conference on Entropy and Its Applications

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This paper discusses the major assumptions of influential ecological approaches on the human movement variability in sports and how it can be analyzed by benefiting from well-known measures of entropy. These measures are exploited so as to further understand the performance of athletes from a dynamical and chaotic perspective. Based on the presented evidences, entropy-based techniques will be considered to measure, analyze and evaluate the human performance variability under three different case studies: i) golf; ii) tennis; and iii) soccer. At a first stage, the athletes' performance will be analyzed at the individual level by considering the golf putting (pendulum movement) and the tennis serve (ballistic movement). Under these gestures, the approximate entropy is considered to extract the variability inherent to the process variables. Afterwards, the athletes' performance will be analyzed at the collective level by considering the soccer case (team sport). To that end, OPEN ACCESS 2 both approximate entropy and Shannon's entropy are mutually considered to assess the variability of football players' trajectory. To outline the applicability of entropy-based measures to analyze sports, this article ends with an overall reflection about the potential of such measures towards an increased understanding on the overall human performance. This methodology proves to be useful to provide decisive information and feedback for coaches, sports analysts and even for the athletes.

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Section: Related Workmentioning

confidence: 99%

“…However, the applicability of Shannon's entropy is wide; from the study of birds' vocal repertories [19] to the heart rate variability [20]. Within sports context, some studies have benefitted from Shannon's entropy to measure the athletes' variability, mainly applying it to their trajectory [18].…”

Section: Shannon's Entropymentioning

confidence: 99%

On an Entropy-based Performance Analysis in Sports

Couceiro

Clemente

Dias

et al. 2014

Proceedings of 1st International Electronic Conference on Entropy and Its Applications

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“…El ruido de fondo de las grabaciones se eliminó mediante filtros FFT (Baker & Logue, 2003). Para los parámetros del canto, se cuantificó la duración, el número de notas, las frecuencias mínimas y máximas, la distribución de energía vocal dentro del rango de frecuencias de cada individuo (Zollinger, Podos, Nemeth, Goller, & Brumm, 2012), y la entropía o diversidad vocal (Silva, Piqueira, & Vielliard, 2000).…”

Section: Grabación De Cantosunclassified

Adaptación acústica del canto de Turdus leucomelas (Passeriformes: Turdidae) a diferentes niveles de ruido antrópico, en el área metropolitana de Belém de Pará, Brasil

Mendes

Colino-Rabanal

Peris

2017

RBT

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Adaptación acústica del canto deAbstract: Acoustic adaptation in Turdus leucomelas (Passeriformes: Turdidae) songs to different levels of anthropogenic noise, in the metropolitan area of Belem, Para, Brazil. Anthropogenic noise in urban environments is a major challenge for those species that depend on the transmission of acoustic signals to communicate. To avoid being masked by background noise, some bird species are able to make adjustments in their songs. Studies on vocal adjustment for tropical birds are still scarce and are of interest since both the urban structure and the vegetation associated with urban habitats differ significantly with respect to the cities of temperate climates.In this research we studied the changes in the song parameters of the pale-breasted thrush (Turdus leucomelas) in an urban environment of the metropolitan area of Belém (Brazil). To this end, bird songs were recorded and ambient noise was measured between September and November 2008, in three different acoustic environments (urban, suburban and rural) along an urban gradient. The songs of 12 individuals per area were selected (a total of 36). Possible differences between song parameters were analyzed by ANOVAs. To assess the noise impact on bird song, we only considered the spectrum of environmental noise within the range of vocalizations of the species. In general, birds of urban habitats presented songs with higher maximum frequencies and with a wider range of notes, than their counterparts in suburban and rural areas. The differences were more pronounced in relation to rural areas. No differences in the minimum frequencies, the concentration of energy, or the average duration of the notes were found. These results differ from other studies and could possibly indicate variations in the way birds try to succeed in habitats with high ambient noise. It is necessary further exploration on the role of these changes in the effective improvement of intra-specific communication for the species in such environments. Rev. Biol. Trop. 65 (2): 633-642. Epub 2017 June 01.

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“…Further studies along this line include the analysis of the chickadee (Parus atricapillus and P. carolinensis) [22,23], European starlings (Sturnus vulgaris) [24], Rufous-bellied thrushes (Turdus rufiventris) [25], European skylarks (Alauda arvensis L.) [26], wood thrushes (Hylocichla mustelina) and robins (Turdus migratorius) [13], bottlenose dolphins (Tursiops truncatus) [14,[27][28][29], humpback whales (Megaptera novaeangliae) [30][31][32][33] and male rock hyraxes (Procavia capensis) [34].…”

Section: Information Theory and Animal Communicationmentioning

confidence: 99%

Complexity in Animal Communication: Estimating the Size of N-Gram Structures

Smith

2014

Entropy

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In this paper, new techniques that allow conditional entropy to estimate the combinatorics of symbols are applied to animal communication studies to estimate the communication's repertoire size. By using the conditional entropy estimates at multiple orders, the paper estimates the total repertoire sizes for animal communication across bottlenose dolphins, humpback whales and several species of birds for an N-gram length of one to three. In addition to discussing the impact of this method on studies of animal communication complexity, the reliability of these estimates is compared to other methods through simulation. While entropy does undercount the total repertoire size due to rare N-grams, it gives a more accurate picture of the most frequently used repertoire than just repertoire size alone.

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Using Shannon Entropy on Measuring the Individual Variability in the Rufous-bellied Thrush Turdus rufiventris Vocal Communication

Cited by 39 publications

References 6 publications

On an Entropy-based Performance Analysis in Sports

On an Entropy-based Performance Analysis in Sports

Adaptación acústica del canto de Turdus leucomelas (Passeriformes: Turdidae) a diferentes niveles de ruido antrópico, en el área metropolitana de Belém de Pará, Brasil

Complexity in Animal Communication: Estimating the Size of N-Gram Structures

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