基于规划识别的社会安全事件识别方法

社会安全事件发生之前通常要进行筹划、准备,并逐步成型,通过观察这一过程中参与者的行为和动作有可能识别正在酝酿的社会安全事件.一些社会安全事件的行动单独来看并不一定表现出异常特征,需要综合分析发现多个参与者行动相互关联后可能形成的事件.文章假设参与者在事件准备和形成过程中的部分行动是可以被观察到的,提出了基于规划识别的社会安全事件识别方法.首先构造了社会安全事件识别模型框架,描述了社会安全事件识别的领域知识和问题模型,进而采用plan recognition as planning (PRAP)规划识别方法,利用领域知识进行推理,动态地识别可能发生的社会安全事件.最后以人员聚集事件为例设计了实验算例,检验了方法的有效性.实验结果表明该方法能够准确识别参与者行动对应的社会安全事件,并且具备较强的提前识别能力,能够提高社会安全事件监测预警能力.

Social security event recognition based on plan recognition

Before a social security event occurs, it usually goes through a process of planning and preparation. The social security event that is brewing might be identified in advance according to the behavior and actions of the participants in the preparation process. Although the preparation actions hardly show abnormal characteristics separately, an underlying event might be found if multiple participants' actions and their relationships are comprehensively analyzed. The paper assumes that some of the actions of participants in the preparation process of some social security events can be observed. A social security event recognition method based on plan recognition is proposed. The social security event recognition model framework is constructed firstly. The domain knowledge and problem model of social security event recognition are described. Then the corresponding event recognition algorithm is proposed employing the method of plan recognition as planning (PRAP). The algorithm is capable of reasoning using domain knowledge, and identifying the possible event dynamically. Finally, an experimental example is designed based on the personnel gathering event, and the effectiveness of the method is tested. The experimental results show that the method can accurately identify the social security event corresponding to the participants' actions, and has strong ability to identify in advance. It can improve the monitoring and early warning capability of social security events.