KNOWLEDGE REPRESENTATION FOR LEADERSHIP STORIES

Leadership requires making decisions and implementing the results by influencing those being lead. The Personal Access to Leadership project, PAL, is constructing tools to assist leaders in creative ways and assisting the development of leaders. The tools are knowledge-based systems employing shallow understanding of the domain. The approaches used provide guidance, but do not generate solutions. One aspect that continues under exploration in PAL is the use of stories for training and guiding leaders. In order to make such support systems work, a representation is needed to enable locating useful stories related to the task of a leader. This article defines a model for story representation for the PAL tools, called the PAL tool IdeaLab. The IdeaLab is the tool to which stories are being added, as a help system to support and extend the user's thinking.     

MAS中基于Ontology的知识表示与推理研究

采用基于Ontology的知识表示方法,解决多Agent的知识表示和共享问题,实现知识的自动推理和获取,实现多Agent之间语义理解,体现Agent的智能特征.在多Agent原型旅游系统中,采用OWL描述Ontology定义相关领域的知识表示与推理,为Agent之间的学习、协商,进一步交互通信打下基础.     

PERSPECTIVES IN KNOWLEDGE REPRESENTATION

In this paper we discuss recent developments in the research on knowledge representation, focusing on hybrid formalisms, nonmonotonic reasoning, and formalisms for reasoning about knowledge and reasoning in a multiagent scenario.     

商业MIS框架生成系统的知识表示研究

商业ＭＩＳ框架生成专家系统（ＦＧＳＭ）包含的领域知识多而染。为了简明有效地组织表达知识,文中介绍了ＦＧＳＭ中知识的分类,并详细地讨论了每类知识的具体表示方法。系统运行表明,系统中的知识易于扩展和修改,具有较强的知识组织、表达和更新能力,提高了推理效率。     

LogC智能推理语言和环境

LogC语言和环境面向知识推理,旨在为包括专家系统在内的一大类智能软件系统设计提供一般目的的集成化环境支持,本文从知识表示、推理效率和环境结构化等三方面阐述LogC语言和环境的设计特点。     

一种基于十元格蕴涵代数的知识表示方法

不确定知识表示中常使用语言值来表达其真实程度和可信程度。为处理具有语言值可信度的不确定性知识表示问题,基于十元格蕴涵代数,建立一个十元语言值可信度因子知识表示模型,并实现了具有语言值可信度因子的知识推理。所提出的知识表示方法可以有效地表达具有可比性或不可比性的语言值不确定性信息。实例说明所提出的方法在表示知识时能够尽量模拟具有语言值信息的人类思维模式,有利于对不确定性知识的智能处理。     

一种广义综合知识表示方法及其应用

知识发现技术能发现数据中有用的模式和知识,但如何和专家系统有效集成仍然尚未得到解决.本文从知识表示的角度探讨二者集成,提出一种面向知识发现的广义综合知识表示方法.该方法能有效表示包括关联、分类、序贯、神经网络、基于案例推理等在内的多种知识类型,同时该方法将知识发现方法表示在其内部,从而有利于自动知识获取的实现.在此基础上提出一种新型专家系统原型.该原型从语义、机制和接口三个层次集成知识发现技术,可以有效进行自动知识获取.     

INFERENCE PROCEDURES FOR FUZZY KNOWLEDGE REPRESENTATION SCHEME

This article presents a formal model of the knowledge representation scheme based on the fuzzy Petri net (FPN) theory. The model is represented as a 13-tuple consisting of the components of the FPN, two functions that give semantic meanings to the scheme and a set of contradictions. For the scheme, called the knowledge representation scheme based on the fuzzy Petri nets theory (KRFPN) the fuzzy inheritance and fuzzy recognition-inference procedures based on the dynamical properties of the FPN, are described in detail. The upper-time complexity of both the proposed inference algorithms is O(nm), where n is the number of places (concepts) and m is the number of transitions (relations) in the scheme. Illustrative examples of the fuzzy inheritance and the fuzzy recognition algorithms for the knowledge base, designed by the KRFPN, are given.     

CHUNKING MECHANISM FOR A KNOWLEDGE REPRESENTATION SYSTEM

A chunking mechanism to be used as a multipurpose device in a knowledge representation system is presented. The most relevant characteristics of this system are outlined in order to present the theoretical framework in which chunking has been developed. Uses of chunking as a learning mechanism and as a working memory are described.     

试探性知识的表示及其解题算法

知识表示是研究工程规范管理系统首要解决的问题，本文提出用状态知识元与决策表相结合来表示试探性工程规范知识，并介绍了基于这一结构的推理方法。     

基于图上下文的知识表示学习

在知识图谱的知识表示学习中,绝大多数方法都是将知识图谱中实体和关系映射到低维的连续向量空间中,但数据的稀疏和信息的不足仍会导致实体和关系语义表示的不完整性.针对这个问题,提出基于图上下文的知识表示学习模型(Context_RL).将知识图谱中实体和关系的上下文信息作为可靠数据来源和输入.通过计算实体和关系的语义相似度,...     

NDKAS中知识的理论表示方法及其描述语言的设计

知识的理论表示方法是基于属性描述的概念获取系统中一种有效的知识表示方法，它具有层次性，抽象性、模块性和完整性等特点。本文给出了理论表示方法及其描述语言的定义和应用实例。     

概念图知识表示方法的研究

本文简要介绍了一种新的知识表示方法－概念图;详细论述了概念图知识表示的机器内部实现方法以及在推理过程中如何实现概念图之间的匹配。     

从知识表示到表示:人工智能认识论上的进步

知识表示是对智能进行模拟的一个数学模型,然而它可以不是一个对智能本质的描述,特别是传统的符号主义知识表示离揭示人的智能行为发生的内在过程还有很大的差距,在神经科学和心理学的指导下,通过对智能行为的生理基础和心理过程的研究,遵循“解释智能”的思想,可以得到对知识的心智表示的新认识,这种表示观的不同,预示着人工智能方法论上的进步。     

HYPERTEXT-BASED REPRESENTATION OF KNOWLEDGE AND REASONING FOR USER GUIDANCE IN DIAGNOSIS OF COMPLEX SYSTEMS

ABSTRACT

The development of a hypertext-based diagnosis system requires, on one hand, adapted tools for a task oriented navigation across the documents, and on the other hand, context sensitive browsing capability of the knowledge base. This paper presents a system that possesses both properties. It is based on a formal model ontology for representing a diagnostic domain, a computational scheme to implement and use the ontology, and a human-machine interface to provide users with an efficient access to objects, methods, and relations described in the ontology. We use an example based on the diagnosis of vibrations of rotating machines throughout the paper to illustrate the approach. The example has been built and implemented according to the norm (AFNOR 1998), which defines the protocol and the evaluation procedure of vibration from signals measured and recorded on the rotating machines.     

SEMANTICAL AND ONTOLOGICAL CONSIDERATIONS IN TELOS: A LANGUAGE FOR KNOWLEDGE REPRESENTATION DIMITRIS PLEXOUSAKIS

This paper focuses on the semantics of Telos, a language for representing knowledge about information systems. Telos is intended to support the development of information systems, especially in the requirements modeling phase. An object-oriented representational framework is supported by Telos. Its features include aggregation, generalization, and classification, the treatment of attributes as first-class objects and the explicit representation of time. Telos also provides an assertion sublanguage for expressing deductive rules and integrity constraints. A possible-worlds semantics is defined for Telos knowledge bases. This semantics is intended to capture the peculiarities involved in the interpretation of temporal expressions. The integration of time has also inspired the treatment of existence in Telos. An ontology of objects based on the property of existence is proposed. In the spirit of KRYPTON, Telos knowledge bases are specified functionally, in terms of the operations provided for querying and updating them. This knowledge-level analysis will allow us to specify exactly what a knowledge base can be ASK-ed or TELL-ed about the domain of discourse. Soundness, consistency, and completeness results have also been proven to complete the specification of Telos knowledge bases. This formal account of the language provides a logical framework that can be used to verify the correctness of any proposed implementation of the system.     

基于属性Petri网的语义网络知识表示

首先给出了基于定性映射的属性Petri网的形式定义和运行机制;其次给出了基于属性Petri网的语义网络知识表示模式,此模式适合干感觉特征抽取与整合,和基于该机制的各种思维功能的描述。     

产生式知识的有序二叉决策图表示及其推理

为了更完整地表示产生式规则构成的知识库及更有效地进行知识推理,给出了基于有序二叉决策图OBDD(Ordered Binary Decision Diagram)的产生式知识表示模型.在此基础上实现了基于OBDD的知识推理规则及相关算法,并结合实例对OBDD模型及其推理规则的可行性进行了分析.     

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。