摘要
XML关键字查询结果质量不高的一个很重要的原因是查询关键词难以反映用户真实的查询意图,而给关键词设置权重在一定程度上可以解决这一难题.本文结合关键字之间的结构关系提出了一种新的结果排序方法,该方法给查询关键词设置权重,并参照查询关键词的权重给包含关键字的结点设定结点权重,然后根据关系树中的结点权重和关键词之间结构关系^([1])统计SLCA结点的重要程度,再以此依据对查询结果进行排序,最后返回给用户有序的查询结果.实验结果和分析表明,提出的排序方法具有较高的准确率,能够较好地满足用户查询的需求和偏好.
A very important reason for low quality results of XML keyword searching is that it is difficult to reflect the user＇s query intent. In this paper, setting keywords weight could resolve this problem to a certain extent. A new method of query results sort based on keywords weight and keywords structure is proposed. This method sets keywords weight and sets nodes weight for every node that contains keywords, according to keywords weight. The importance of the SLCA node is estimated according to the nodes weight in the relation tree and the relationship between keywords. The query results are sorted on the importance of SLCA nodes. The experimental results show that the proposed method has higher accuracy for sorting.
出处
《计算机系统应用》
2017年第4期198-202,共5页
Computer Systems & Applications
