Balancing antagonistic time and resource utilization constraints in over-subscribed scheduling problems

Proceedings Eighth Conference on Artificial Intelligence for Applications Pub Date : 1992-03-02 DOI:10.1109/CAIA.1992.200018

S.F. Smith, D. Pathak

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引用次数: 15

Abstract

Previous research has demonstrated the utility of constraint-based problem structuring and multiperspective scheduling for effective balancing conflicting objects in constraint-relaxable scheduling problems. Work aimed at applying these concepts to over-subscribed scheduling problems is discussed. The focus is on the problem of constructing short-term schedules for the Hubble Space Telescope, where complex state-dependent constraints on resource utilization interact antagonistically with the ability to satisfy absolute time constraints on execution of goal activities. Two time-bounded heuristic scheduling strategies were defined. The performance of each in balancing this tradeoff was studied experimentally. On the basis of results indicating the differential superiority of each strategy, a composite multiperspective strategy based on recognition of characteristics of the current problem-solving state is defined. Its experimental performance indicates the benefits of constraint-based problem structuring in over-subscribed domains.<>

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超额调度问题中对抗时间和资源利用约束的平衡

在约束松弛调度问题中，基于约束的问题结构和多视角调度可以有效地平衡冲突对象。讨论了将这些概念应用于超额订阅调度问题的工作。重点是构建哈勃太空望远镜的短期计划问题，其中资源利用的复杂状态依赖约束与满足目标活动执行的绝对时间约束的能力相互作用。定义了两种限时启发式调度策略。实验研究了每种方法在平衡这种权衡方面的性能。在分析各策略差异优势的基础上，定义了基于当前问题解决状态特征识别的复合多视角策略。它的实验性能表明了在超额订阅领域中基于约束的问题结构的好处。

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Proceedings Eighth Conference on Artificial Intelligence for Applications

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