扩展的动态逻辑程序及其在产品个性化推荐中的应用

Extended Dynamic Logic Programs and Its Application in Product Personalized Recommendation

动态逻辑程序能很好的处理知识库更新问题,但它不能描述和处理具有偏好的知识更新问题.因此,本文在动态逻辑程序的基础上,提出了一种新的扩展的动态逻辑程序,它通过对规则头部使用有序析取的方法使其能够描述和处理具有偏好的知识更新问题,进一步增强了知识的表达和推理能力,并且定义了其最优回答集语义.同时将这种新的扩展的动态逻辑程序应用于产品推荐系统中,使用户获得的推荐信息具有个性化特点,达到个性化推荐的目的.最后以一个产品个性化推荐实例讨论扩展的动态逻辑程序在产品个性化推荐中的应用.

Dynamic logic program is an extension of answer set program for processing knowledge base updated problems, but it cannot describe and deal with knowledge base with preferences updated problems. Therefore, this paper proposes an extended dynamic logic programming language which is based on the dynamic logic program, extending the head of the rule to the form of ordered disjunctive and its optimal answer set semantics is also obtained. The new logic program has more powerful expressiveness and reasoning ability to describe and handle knowledge base with preferences updated problems; however, it does not increase the computational complexity. Applying the method mentioned above to the existing product recommendation system, so that users can get the recommended information with personalized features, to achieve the purpose of the personalized recommendation. Finally the example discusses the extension of dynamic logic program in the application of products personalized recommendation.