Ashkenazy Y, Ivanov P C, Havlin S, Peng C K, Yamamoto Y, Goldberger A L, Stanley H E
Center for Polymer Studies and Department of Physics, Boston University, Boston, MA, USA.
Comput Cardiol. 2000;27:139-42.
The cardiac interbeat (RR) increment time series can be decomposed into two sub-sequences: a magnitude series and a sign series. The authors show that the sign sequence, a simple binary representation of the original RR series, retains fundamental scaling properties of the original series, is robust with respect to outliers, and may provide useful information about neuroautonomic control mechanisms.
心脏搏动间期（RR）增量时间序列可分解为两个子序列：一个幅度序列和一个符号序列。作者表明，符号序列作为原始RR序列的一种简单二进制表示，保留了原始序列的基本标度特性，对异常值具有鲁棒性，并且可能提供有关神经自主控制机制的有用信息。
