中文摘要：

提出了一种新的P2P系统索引构建方法.它使用多个简单本体（ontology）,对同一资源进行描述,将各个ontology描述转化为相应的本体序号（ontology ID）,然后使用Hilbert空间填充曲线,实现从多维ontology ID到一维索引值的映射,得到保留了语义的索引值.根据这个索引值,在Chord等结构化P2P上发布和查找资源.该方法对资源的描述更加准确、简单,资源的发布和查询也更加灵活和高效.

英文摘要：

This paper prsents a new approach to index constructing for P2P system. First, resources are described with multiple simple ontologies, then these ontology descriptions are transformed into ontology IDs, and the mapping from multiple dimensions＇ ontology IDs to one dimension＇s index is achieved with Hilbert space filling curve. With the index, resources can be posted and searched for in structured P2P systems like Chord. Description of resources by this approach can be exact and simpler; publication and query can be more flexible and efficient.