The event subsequences represented by transformed parameters are clustered by a hybrid genetic algorithm to implement symbolization.Each event is identified by the cluster it belongs to.

• 对以变换参数表示的事件子序列的利用混合遗传聚类算法实现离散符号化，每一事件子序列以其所属类别标识，从而将连续数值域的时间序列转化为离散符号域的事件序列。