【摘要】 为了解决以往案例检索片面性以及忽视环境因素重要性的问题,进一步提高案例检索的有效性和准确性,将共性知识元模型引入到应急领域中,结合突发事件案例内容特征,将突发事件案例其表示成基于知识元的后景和前景。基于此提出了一种突发事件案例检索方法,构建了检索总体流程与相似度计算流程,提出了后景相似度、前景相似度以及全局相似度的计算方法;针对前景相似度,提出了完备下标正序数列的概念,给出了从前景片断相似度矩阵中找出完备下标正序数列的步骤,最后通过实例证明了方法的可行性。更多还原

【Abstract】 In order to solve problems which are one-sidedness and overlook importance of environmental factors in previous case retrieval,and further improve effectiveness and accuracy of case retrieval,introduce common knowledge element model into field of emergency.Represent emergency case as background and foreground based on knowledge element combined content features of emergency case.Based on this representation,propose an emergency case retrieval method.And construct overall retrieval process and similarity calculation process.Then propose calculation method of background similarity,foreground and overall similarity.For foreground similarity,propose concept of complete subscript positive sequence columns,then give steps to find out complete subscript positive sequence columns from foreground fragments similarity matrix.Finally,prove feasibility of method through an example.更多还原