【摘 要】
：
In a recent paper [2002 Phys. Rev. Lett. 88 174102], Bandt and Pompe propose permutation entropy (PE)as a natural complexity measure for arbitrary time series w
【机 构】
：
The Key Laboratory of Robot and Intelligent Technology of Shandong Province, and College of Informat
论文部分内容阅读
In a recent paper [2002 Phys. Rev. Lett. 88 174102], Bandt and Pompe propose permutation entropy (PE)as a natural complexity measure for arbitrary time series which may be stationary or nonstationary, deterministic or stochastic. Their method is based on a comparison of neighbouring values. This paper further develops PE, and proposes the concept of fine-grained PE (FGPE) defined by the order patte and magnitude of the difference between neighbouring values. This measure excludes the case where vectors with a distinct appearance are mistakenly mapped onto the same permutation type, and consequently FGPE becomes more sensitive to the dynamical change of time series than does PE, according to our simulation and experimental results.
其他文献
细节决定一切。但茶花养护中许多人云亦云的细节却被不少人忽视了,也许付出了惨重的代价还不知为什么。读了本文,希望你也开始关注细节。细节中见真功夫。长久以来,大家栽种
1 989年,他培育的掖单13号创造了1 096.29公斤的世界夏玉米亩产最高纪录,轰动全国;2004年,他研制出玉米新品种“登海” “超试1号”实收亩产1 402.86公斤,将世界纪录提高了30
This paper derives the analytical expression of free energy for a weakly interacting Fermi gas in a weak magnetic field, by using the methods of quantum statist
We have made a first principles study to investigate density of states, band structure, the dielectric function and absorption spectra of wurtzite Mg0.25Zn0.750
89—1西瓜,是省农科院园艺研究所西瓜育种课题组最新育成的新品系。经过四年的小区试验和区域试验以及在省内外20多个点的示范,表现突出。89—1新品系的问世将新品种,对我省
为探索宁夏干旱风沙区由于苜蓿种植年限过长而致使土壤水分亏缺及苜蓿地翻耕轮作后土壤水分、养分消耗及恢复等问题,本文以宁夏干旱风沙区紫花苜蓿地为研究对象,对10年生紫花苜蓿(CK)翻耕后连续2年内不同作物轮作后的土壤水分、土壤养分、土壤微生物、土壤酶活性、作物水分利用效率、生理指标、经济产量以及不同轮作方式的经济效益、生态环境效益分析进行了研究,旨在为干旱风沙区的草田轮作提供理论参考依据。主要研究结果
为解决未来玉米巨大的需求缺口，长期以来产量有关的性状是遗传改良的重点。这些性状的遗传研究，将为遗传改良提供理论基础。目前已检测到大量控制这些性状的QTL。但大多数都是统计意义上的QTL，实践意义不大。课题组利用4个玉米自交系构建276/72//A188/交51四交作图群体，检测到多个株型、产量、生育期相关的主效QTL。在此基础上，用检测到的QTL标记区间及其附近的染色体片段为目标染色体区间，以加性