Distributed Language-based Environments

基于分布式语言的环境

• 批准号: 9000930
• 负责人: Gail Kaiser
• 金额: $ 10万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-15 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9000930&HistoricalAwards=false
• 关键词: Distributed; Language; based; Environments

This project continues NSF previously funded research in Distributed Language-based Environments. The objective of this project is to develop a formal model, underlying algorithms and proof-of-concept implementation of change propagation, which is modelled as parallel and distributed incremental evaluation of an attribute grammar defining centralized or decentralized attributed parse trees in response to multiple asynchronous subtree replacements on a tree. In this project, algorithms for several aspects of such change propagation will be investigated, including support for multiple agents initiating subtree replacements, maintenance of underlying data structures, and coordination of evaluation processes, with particular consideration to tradeoffs between attribute evaluation and bookkeeping costs. The initial application is to multi-user distributed language-based programming environments, where programmers employ workstations connected by a local area network and modify segments (modules) in a decentralized attributed parse tree (program).

该项目继续NSF以前资助的分布式研究 以环境为基础。 该项目的目标是 开发正式模型、底层算法和概念验证 实现变更传播，将其建模为并行 属性文法的分布式增量求值 定义集中式或分散式属性解析树， 响应树上的多个异步子树替换。 在 这个项目，算法的几个方面，这样的变化 传播将被调查，包括支持多个 代理启动子树替换，维护基础数据 评估过程的结构和协调，特别是 考虑属性评估和 簿记费用。 最初的应用程序是多用户 基于分布式语言的编程环境，程序员 使用通过局域网连接的工作站，并修改 分散属性解析树（程序）中的段（模块）。