一种基于情景感知的学习服务发现算法

化学计算模型是基于化学反应和计算之间比喻的并行计算模型,其内在的并行性及不确定性可以有效地消除与计算逻辑本身无关的人为顺序性,从而能够以更为直观和抽象的方式来描述并行计算。但也正是由于其内在的并行性和高层抽象性,使得特定的控制机制难以描述。高阶化学编程语言是对传统化学计算模型的扩展和泛化,在保留传统化学计算特征的同时,不仅可以有效地描述传统的控制机制,也可以方便地定义新的控制机制。通过从简单面向对象语言到高阶化学语言的转换,给出了面向对象语言的一种化学语义描述,提供了一种描述面向对象系统的新视角,也为结合面向对象编程和化学编程提供了一种可能。

E-Learning Services Discovery Algorithm Based on Context Aware

Based on e-Learning service discovery system,an e-Learning service discovery algorithm-eLSDACA was proposed.The algorithm awares the learning context of learners,and then comes into students context ontology.E-Learning context element is used in 2 aspects.The first is that it is used as input properties.The second is that it is the modification element for the e-Learning service discovery system.With the help of the amendatory function,the total matching degree of discovered advertised e-Learning services is modified.Simulation experiments indicate that this algorithm’s precision and recall of e-Learning service discovery are all over 90%,and they are all better than the traditional algorithms,after times that learner uses the system to discovery e-Learning service are more than 10.