计算机科学 ›› 2016, Vol. 43 ›› Issue (5): 179-187.doi: 10.11896/j.issn.1002-137X.2016.05.033
周春姐,戴鹏飞,李洪波,张振兴
ZHOU Chun-jie, DAI Peng-fei, LI Hong-bo and ZHANG Zhen-xing
摘要： 现实世界中的很多事件都是基于时间段的,具有明显的时间持续性特征。具有这种特征的事件之间的时态关系复杂多变,在发生乱序事件时,查询处理极具挑战性。物联网环境中对于时序事件的有序到达具有非常严苛的要求,但网络延迟和机器故障却导致事件乱序问题频发。基于建立的时态事件语义表示模型,提出了一种用于处理具有时间持续性特征的乱序事件的查询处理模式,并构建了一种混合解决方案,使物联网环境中乱序事件在到达后的一定时间阈值内达到正确有序。最后,通过实验验证了所提方法的有效性。
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