指出传统信息检索技术对XML文档的处理,没有考虑其结构信息,描述粒度不够细致,故不能充分挖掘XML文档的表达能力;认为采用元素索引、属性索引和结构索引来记录XML文档的结构信息,可在细粒度上记载XML文档的结构,从而深层次地挖掘XML文档的表达能力。 It points out that the traditional information retrieval technology can not fully exploit the expressive power of XML document because it does not consider the structure information and describe the granularity of the XML document because it does not consider its structure information. It considers that the structure information of XML document is recorded by the element index, attribute index and structure index, The structure of an XML document can be described in fine-grained form, so that the expression ability of XML documents can be further tapped.