基于组合优化算法的知识获取技术及其在动力锅炉故障诊断中的应用

为解决目前知识获取方法对于复杂过程知识获取存在的不完全、不一致等问题 ,从优化角度提出了一种基于组合优化算法的知识获取技术 .首先将过程知识获取归结为优化问题 ,建立知识获取模型 ,然后将遗传算法群体演化机制引入到模拟退火算法中构成组合优化算法对模型求解 ,获得所需要的知识 .与其它方法对动力锅炉故障诊断知识获取实例的应用比较证明了该方法的有效性和优越性 ,从而为解决复杂过程知识获取提供了一种新的方法     

模型管理系统中构模知识的组织和获取方法

提出了一种构模知识的组织和获取方法。构模知识分为模型知识、领域知识和数据知识3个层次，数据知识是最底层的知识，高层知识的应用通过调用底层知识完成。模型知识和领域知识可以通过交互的方式在专家的帮助下获取，数据知识可以由系统自动获取。应用这种方法，系统能够在专家构建模型时获取构模的知识，从而使模型资源得到有效利用，并解决了模型管理系统知识获取的瓶颈问题。     

一种基于神经网络的知识获取方法研究与应用

提出了一种基于神经网络的知识获取方法,该方法利用语言神经元,对具有开区域的连续输入变量,自动产生相应的语言变量输出,讨论了相应的神经网络训练和知识获取方法,所获取的知识以If-Then的规则形式表示,具有简洁、紧凑、不必进一步化简、易于理解等特点,并给出一个在教学型专家系统中获取专家领域知识的应用实例。     

基于对象模型驱动的工艺知识挖掘技术研究*

为了解决CAPP系统中工艺知识获取的难题,提出了基于对象模型驱动的工艺知识挖掘技术和方法。采用面向对象的方法建立了CAPP系统中工艺知识/数据的对象模型,并基于对象模型研究建立了工艺知识挖掘技术体系,设计了工艺知识挖掘脚本,并以典型工序总结为应用对象进行了应用研究。该技术可在CAPP系统应用数据积累的基础上有效支持显性工艺知识的自动挖掘与获取。     

知识获取方法DECO

知识获取方法学是目前人工智能领域中最重要的分支之一,现在已出现了几种不同应用范围的获取方法,集成式知识获取方法的研究已成为当前的一种趋势,本文所介绍的DECO方法是一种集成式方法,它将知识获取分为若干个基本上相互独立的步骤,并且溶进了知识库快速生成技术以及基于专家分析实例的学习方法。     

汉语语义选择限制知识的自动获取研究

语义选择限制刻画了谓语对论元的语义选择倾向,是一种重要的词汇语义知识,对自然语言的句法、语义分析具有重要作用。该文研究汉语语义选择限制知识的自动获取,提出基于HowNet和基于LDA (Latent Dirichlet Allocation)的两种知识获取方法,对方法进行了实验对比与分析。实验表明,前者所获取的知识可理解性更好,后者所获取的知识应用效果更好。两种方法具有很好的互补性,我们提出了一个二者的融合方案。     

基于免疫算法的故障诊断知识获取方法

随着系统设备和功能的日益复杂化,各种故障现象成因越来越复杂,智能故障诊断系统作为人工智能技术在故障诊断领域的应用,在实践中取得了较好的成效,但诊断知识获取一直是系统建造中的瓶颈问题,机器学习是目前采用较多、也较为有效的一种方法。该文基于从已有的诊断经验事例中学习获取知识的思路,借鉴免疫理论的相关概念,设计了新的知识获取模型,利用免疫算法,按照预定的优化目标函数,生成最优的诊断知识,通过对一故障实例知识获取的应用,验证了该方法的可行性。     

机械零件设计的知识服务方法及系统实现

为了解决机械零件类知识资源难以被发现,获取效率低的问题,提出一种基于零件实例库的关联知识服务方法。根据知识间的从属关系,设计三种关联知识检索方法;基于相似度匹配算法,设计关联知识推送方法,并通过以上两种知识获取方法实施知识服务。设计并实现了机械非标零件设计知识服务平台,为非标零件设计过程中知识的共享和管理提供一个综合的网络服务平台。最后通过应用实例对该平台知识服务的应用效果进行了验证。     

基于PADL的古代人物简历知识获取

领域文本知识获取是目前人工智能中的一个关键问题。本文探讨如何从人物简介中获取人物知识。由于自然语言技术目前尚不足支持自动的知识获取,某种形式的人机交互或半自动方法是一种可行的折衷方案。本文在总结人物知识描述的特点基础上,提出了一种中问标记语言,它是自然语言到目标知识表示语言的过渡桥梁。同时,我们还介绍使用该方法在宗教古代人物知识获取中的应用。     

基于领域本体的半结构化文本知识自动获取方法的设计和实现

文章介绍了一种新的基于领域本体的文本知识自动获取方法的设计和实现．通过引入领域本体,实现了半结构化文本知识的完全自动获取．该方法具有较好的通用性,把人们从繁重的手工劳动中解放出来,并能极大地提高知识获取的效率．已经设计并实现了：基于领域本体的知识获取方法OMKast;一种参数化的知识编程语言ePKPL,用以实现OMKast、ePKPL虚拟机VM（即ePKPI,运行环境）．目前,这项工作已经在中草药、音乐、西医等领域进行了应用,取得了满意的结果．     

Level Lines of a Polynomial on a Plane

Programming and Computer Software - A method for calculating the location of all types of level lines of a real polynomial on the real plane is proposed. To this end, the critical points and...     

Approximation of a Metric on a Dominating Cone

A theorem on the representation of a pseudoball of a dominating cone is proven. This theorem is an analog of the Caratheodory theorem on the representation of convex sets. The theorem allows to develop numerical methods for quantitative evaluation of systems in many indicators.     

Three-Link Mechanism as a Model of a Person on a Swing

Journal of Computer and Systems Sciences International - We model movements of a person swinging on a swing. We consider a flat three-link hinged mechanism as the main mechanical model of the...     

Development of a vision-based inspection system on a micro-computer

The role of inspection in achieving enhanced quality and productivity is of paramount importance. There is a trend towards more reliable methods of inspection—like, machine vision, automated inspection, computer-aided inspection, etc. But, for these newer inspection systems to be attractive, these need to be cost-effective. The present paper is based on a project which was concerned with the design and development of an automated micro-based system integrating machine vision with a robot to carry out inspection tasks. To simulate a real-world industrial process, the inspection of common washers has been carried out using the system. Depending on the outcome of the inspection process, the robot arm gets activated to pick a washer and transfer it in a good/bad bin, or place it on an assembly workstation. The manipulator next returns to its standby position and remains there until a new target is presented. The special features of the inspection are: (i) micro-computer based, (ii) low-cost, being under $7500, (iii) flexible and reprogrammable, and (iv) likely to remain effective at the shop floor.     

Multiple anticipatory moves of a server on a line

This paper investigates the destination and desirability of anticipatory moves by an idle server aimed at reducing its response time for future requests. It is motivated by certain types of automated storage and retrieval systems, computer disks and elevators. Requests' timing and location are assumed to be uncertain. If a request arrives during an anticipatory move, the server will travel to the request upon the completion of the noninterruptible move. Otherwise, another anticipatory move can be considered in order to be closer to the static optimum. A stochastic dynamic programming model is developed for finding whether and where to move from each starting location. Structural properties of the optimal solutions are analyzed. Numerical examples are explored to provide insight into the nature and benefit of such moves. These numerical examples show the benefits depend heavily on requests' arrival rate and their location distribution, as well as on the server's setup time and speed.     

Numerical simulation of impact of a jet on a wall

A computing technique for simulating the impact of a high-speed liquid jet on a wet wall is implemented. Such an impact generates shock waves in the jet, in the liquid layer on the wall, and in the gas surrounding the liquid. Also, the interphase boundary is strongly deformed by such an impact. The technique is based on the Constrained Interpolation Profile-Combined Unified Procedure (CIP-CUP) method combined with the dynamically adaptive Soroban grids. The gas-dynamic equations describing the liquid and gas flow are integrated without an explicit separation of the liquid-gas boundary. Such an approach is shown to be efficient for the considered problems. It allows us to obtain solutions without oscillations near the interfaces (including the case where they interact with the shock waves). For illustrative purposes, we provide the computational results for several one-dimensional and twodimensional problems with the typical features of the impact of a high-speed liquid jet on a wall, as well as a comparison with the known analytical and numerical solutions. The computational results for the problem of the impact of a high-speed liquid jet on a wall covered by a thin liquid layer are also presented.     

Effective Implementation of a Parallel Language on a Multiprocessor

A new multiprocessor execution environment integrates semantics of parallel control with mechanisms for synchronization of concurrent tasks.     

Transformation calibration of a camera mounted on a robot

The paper describes the accurate calibration of the camera transformation for a vision system consisting of a camera mounted on a robot. The calibration includes an analysis of the linearity of the camera. A knowledge of the camera transformation allows the three-dimensional position of the object points to be determined using triangulation.     

基于系统动力学模型的物元相关网研究

在可拓学相关分析理论中,关键在于确定相关基元的函数关系。然而,在具体领域中运用的时候,相关函数的确定往往是比较困难的,也就局限了相关网方法的使用。文章以物元为研究对象,对物元的相关网进行了研究,提出了相关网的动力学模型建模方法以及一种在相关函数未知的情况下,基于系统动力学模型的物元相关函数近似构造方法。该方法的原理是通过基础数据的收集和分析,在依据相关网建立的动力学模型中按照固定的步骤进行模拟分析,得出物元的近似相关函数。在此基础上,相关分析的进行就变得简单、可模拟。案例分析的结果表明,该方法能够有效模拟和近似构造相关物元之间的函数关系,为相关网方法在具体领域中的运用奠定了一定的基础。