首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Permutation entropy and statistical complexity in characterising low-aspectratio reversed-field pinch plasma
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Permutation entropy and statistical complexity in characterising low-aspectratio reversed-field pinch plasma

机译:置换熵和统计复杂性在表征低的Aspectratio倒车场捏等离子体中

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摘要

Permutation entropy and statistical complexity are measures for complex time series. The BandtPompe methodology evaluates probability distribution using permutation. The method is robust and effective to quantify information of time series data. Statistical complexity is the product of Jensen-Shannon divergence and permutation entropy. These physical parameters are introduced to analyse time series of emission and magnetic fluctuations in low-aspect-ratio reversed-field pinch (RFP) plasma. The observed time-series data aggregates in a region of the plane, the socalled C-H plane, determined by entropy versus complexity. The C-H plane is a representation space used for distinguishing periodic, chaos, stochastic and noisy processes of time series data. The characteristics of the emissions and magnetic fluctuation change under different RFP-plasma conditions. The statistical complexities of soft x-ray emissions and magnetic fluctuations depend on the relationships between reversal and pinch parameters.
机译:置换熵和统计复杂性是复杂时间序列的措施。 BANDTPPHE方法使用排列评估概率分布。该方法是稳健且有效地量化时间序列数据的信息。统计复杂性是Jensen-Shannon发散和排列熵的产物。引入了这些物理参数,以分析低纵横比逆场夹(RFP)等离子体中的发射和磁波动的时间序列。观察到的时间序列数据在平面的区域中聚集,由熵与复杂度确定。 C-H平面是用于区分定期,混沌,随机和嘈杂的时间序列数据的噪声过程的表示空间。不同RFP - 血浆条件下发射和磁波动变化的特点。软X射线排放和磁波动的统计复杂性取决于逆转和捏参数之间的关系。

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