【摘要】 数字权限管理技术(DRM)的核心是权限描述,而基于动作序列的权限描述模型主要是描述数字产品消费者(用户)允许产生的动作序列,通过动作序列分析,可跟踪权限的执行过程,方便地限制和预测用户在数字内容消费过程中的行为并审计其合理性。文章提出一种基于时序描述逻辑的逻辑推理系统,该系统不仅可以表达用户行为的静态特征,而且可以刻画用户行为之间的时序关系。更多还原

【Abstract】 Digital rights management(DRM) is one of the key techniques of protecting intelligent property of digital content.And the kernel of a digital rights management system is the right description.An action sequences-based right description model is used to describe the action sequences produced by the consumer or user of digital products.User’s behaviors need to be described during the process of digital product consuming so that it can trace the digital rights’ executive process,and predict and limit user’s behavior during the process of digital product consuming,and audit its rationality.This paper puts forward a logic reasoning system,which is based on temporal description logic.This model can not only express static features of a user’s behaviors but also indicate temporal orders among the user’s behaviors.更多还原