基于重要点的PLR表示: 重要点被定义为在局部范围内的极值点，并且与端点的比值超过参数R。将重要点用线段连接，就得到了基于重要点的时间序列分段线性表示，通过选择不同的参数R，可以获得精细粒度不同的分段线性表示。-Based on the important points of PLR: Important points are defined as within the scope of local extreme points, and with the endpoint parameters than the ratio of R. The important points connected with line segments, we obtained time series based on important points, sub-linear representation. by choosing different parameters R, you can get fine granularity of different sub-linear representation.