1.加载告警时间excel文件，进行告警事件的时长和发生间隔的统计分析；
2.计算告警事件对之间的互相关系数；
3.讨论相关分析中时间门限的取值对相关性分析结果的影响；
4.对上述两种相关性分别做告警聚类，并图形化显示；(1., we should grasp the characteristic attributes of alarm information and analyze the time and interval of alarm events.
2. calculate the intercorrelation coefficient between the alarm event pairs;
3., we discuss the influence of time threshold on correlation analysis in correlation analysis.
4., alarm clustering and graphical display were performed on the above two correlations respectively.)