R&D for a Multiprocessor Application Gateway System

9302522 Cerf为扩展美国国家科学基金会、美国国家医学图书馆和美国国家研究计划公司（CNRI）合作项目前期取得的成果，提出了一项研究和开发项目。CNRI与美国国家医学图书馆密切合作，提议设计并实现一个分布式应用网关系统（AGS）原型，该系统将位于现有和计划中的NLM信息数据库和位于互联网上的用户之间。AGS由一个或多个功能强大的网络服务器组成，这些服务器在高速局域网上相互连接。AGS可以通过简单的交互终端为用户提供服务，也可以接受和处理包含主动搜索策略的Knowbot程序，这些策略由用户代理构建，由AGS进行解释。分布式AGS系统的每个元素都可以配置为提供对唯一或复制服务的访问。在完成提议的三阶段工作后，AGS的多个组件将可以通过基于网络的管理站进行管理。为了测试基于知识机器人的应用网关系统背后的理论，建议在国家医学图书馆校园部署一个实验性的、可扩展的系统，将其连接到互联网，并在该操作环境中探索其功能和性能。

9302522 Cerf A research and development project is proposed to extend the results obtained in the earlier period of this cooperative project among the National Science Foundation, National Library of Medicine, and the Corporation for National Research Initiatives (CNRI). Working closely with the National Library of Medicine, CNRI proposed to design and implement a prototype distributed Application Gateway System (AGS) which will be situated between existing and planned NLM information databases and users located on the Internet. An AGS is made up of one or more powerful network servers interlinked on a high speed local area network. The AGS can service users with simple interactive terminals or it can accept and process Knowbot programs which embody active search strategies constructed at the User Agent but interpreted by the AGS. Each element of the distributed AGS system can be configured to provide access to unique or replicated services. At the completion of the proposed three-phase effort, the multiple components of the AGS will be manageable from a network-based management station. To test the theories behind the Knowbot-based Application Gateway System, it is proposed to deploy an experimental, scalable system on the National Library of Medicine campus, link it to the Internet and to explore its functionality and performance in that operational setting.