To improve the variable-lag transfer entropy(VL transfer entropy),the variable positive-lag transfer entropy(VPL transfer entropy)was proposed.The optimal fixed time delay was redefined for correcting DTW time delay sequences based on the proposed idea of time delay correction.The corrected optimal time delay sequence was used to distort the time series,fol-lowed by the causal inference.The causal inference of leadership relationships was conducted in two publicly available animal movement datasets.Experimental results show that the accuracy of causal inference for VPL transfer entropy is improved by 75％to 100％compared to that of VL transfer entropy.The proposed method outperforms VL transfer entropy in discovering animal population leadership relationships.
关键词
因果推断/领导机制/时间序列/视野感知模型/动态时间规整算法/传递熵/可变时滞传递熵
Key words
causality inference/leadership/time series/visual field perception model/dynamic time warping/transfer entropy/variable-lag transfer entropy
维普
万方数据