摘要： 在Internet上使用搜索引擎、门户网站、目录结构查询信息时有许多局限性,新 近出现的查询方法对查询分布在不同站点上的数据也无能为力。该文介绍了一种根据用户需 求进行查询并组合信息的平台及语言。

关键词: 搜索引擎, 信息交易, 代理, 请求定义语言, 请求/匹配组件

Abstract: Search engines, portals, and directories have some limitations to su pport search over the Internet. Recent solutions to such problems fail when the data of interest are partitioned on different sites. In this paper we present a runtime platform and a language supporting a powerful approach to extract and as semble information according to users' needs.

中图分类号: 

• TP393.09