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JAMES RHODES 《国际通用系统杂志》2013,42(1-2):145-163
Abstract For nearly four decades, scientists and music theorists have proposed means to express musical style as information. The Shannon entropy has been used for this purpose based upon the following two assertions: (1) musical composition is essentially the selection of musical symbols within sets of constraints, and (2) a compositional process can be characterized mathematically in a general, abstract manner. Such proposals have been widely criticized, principally on the grounds that only limited numbers of parameters are considered in most cases, and then only in terms of how symbols representing pitch, harmony or rhythm are selected independently of the overall relationships which result from such selections. The ways in which pitch, harmony, and rhythm are interrelated is an issue that is virtually ignored. A major premise of the present discussion is that musical style can be expressed as information only in terms of mathematical relations on multiple sets of musical symbols. The General Systems Problem Solver (GSPS), developed by George Klir, may be utilized for this purpose. 相似文献
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本文介绍了一个基于模糊关系数据库及模糊推理规则概念的原型模糊信息系统,该系统可对非数据2以及知识描述中的不确定性进行有效的处理。系统使用了类Prolog模糊模型,具有较强的推理能力。 相似文献
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The networked control system (NCS) is currently receiving increasing attention from researchers. Researches on this subject, however, have not considered the co‐design of network quality of service (QoS) and control quality of performance (QoP). This paper proposes a novel NCS design framework based on scheduling and control co‐design to compensate for random network‐induced delays. In the framework, a scheduling algorithm used to find the optimal sampling regions of control loops performs rough adjustment and guarantees the network QoS, while a novel adaptive fuzzy PID controller is designed to perform accurate adjustment to guarantee the control QoP. Practical application results obtained with a multi‐loop NCS show that the framework can ensure satisfactory performance due to its robustness against network uncertainty. 相似文献
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本文介绍了在微机上开发的室内装饰设计系统的总体设计方案,并对系统中关键技术的具体实现作了较为详细的阐述,本文提出的室内内装饰设计方法,有机地将表面与空间布局设计结合起来,使整个设计更为简洁而有效,同时对图形学中某些算法加以改进,使其能在微机上实现。 相似文献
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本文针对重复抓取与操作的多指手爪,提出了一种模糊学习控制方法,该方法利用先前的控制误差,逐步地修正不完善的控制规则,使系统的实际输出收敛于给定的轨迹,本文还给出了这种方法的收敛性条件,并应用于多指手爪的位置伺服系统中,改善控制性能,达到了预期的控制效果。 相似文献