It is important to note the distinction between time series and sequential data.
In both cases, the data consist of a sequence, or list of values, in which the order is important.
Time series is a subclass of sequential data where the longitudinal component corresponds to time.
时序数据与序列数据共同之处在于都包含一个数据序列，认为数据间的顺序是重要的。
时间序列可以理解为一类特殊的序列数据，其中纵轴对应时间。
from: Time Series Analysis using Geometric Template Matching, Transactions on Pattern Analysis and Machine Intelligence, March 2013