Method for identification of social hierarchy of breeder roosters based on activity intensity
At present,the determination of the social hierarchy of the natural mating caged breeder roosters mainly relies on manual observation,which is time-consuming and labor-intensive.Therefore,this study took natural mating caged roosters as the research object and proposed a method based on the Improved Gray Wolf Optimization Algorithm(IGWO)combined with LGBM to identify the social hierarchy of chickens based on the activity quantity analysis.Firstly,the nine-axis inertial sensors were used to obtain the chicken behavior data from the sliding window extracted the chicken's activity information,that was characterized by the combined acceleration and combined angular velocity of totaling 44-dimensional time-domain and frequency-domain features,which characterize.The nonlinear convergence factor and the competition strategy of the first wolf were introduced to improve the optimization ability of the Gray Wolf Optimization Algorithm,and dimensionality reduction of activity features was performed to reduce redundancy and improve the model recognition effect.The results showed that the IGWO-LGBM model accurately identified the social hierarchy of chickens.Among them,the precision,recall,and F1-score of social hierarchy recognition were 84.71%,84.59%,and 84.57%,respectively,and the model accuracy was 84.57%,which were improved by 3.80%,3.65%,3.67%,and 3.64%,respectively,compared with the original dataset.The features selected after dimensionality reduction were used as the activity features.After clustering statistics according to activity intensity and fitting by the least squares method,it was found that the chicken social hierarchy was positively correlated with the proportion of high activity behavior and negatively correlated with the proportion of low activity behavior,which enriched the research on social hierarchy.This study is helpful for rapid identification of the social hierarchy of breeder roosters and provides a method for automatic identification of the social hierarchy of breeder roosters.
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