城市应急联动系统GEIS

GEIS（Grid Based Emergency Inter-Act System）是一个基于主体网格的城市应急联动与社会综合服务系统，通过主体网格和通信系统将治安、消防、卫生急救、交通、公共设施，自然灾害等突发事件的应急联动与综合服务，调度集成在一个管理平台中，通过共享指挥平台和基础信息，实现统一接处警，统一指挥，联合行动，快速反应，为市民提供更加便捷的紧急救援及相关服务，为政府科学决策和处置各种紧急与灾害事件提供技术支持为城市公共安全提供技术保障。GEIS的一个突出优势是将范例推理（Case Base Reasoning,CBR）与规则推理（Rule Base Reasoning,RBR）两种人工智能技术相结合，实现了快速预案支持，为科学决策打下良好基础，目前，GEIS已经应用到抗洪抢险和交通事故处理中，效果表明它具有跨平台性好，稳定性强，响应速度快，易操作的独特优势。     

TCBR中案例相关度及案例冗余处理模型

首先介绍基于文档的案例推理技术TCBR,以及CRN、IEs等基本理论,然后详细介绍CRN的构建过程和相关的函数模型,并提出一个求和函数来计算案例与当前问题的相关值,在文章的后面阐述了TCBR的案例学习方法以及案例相似程度的一个判断函数,并提出在这种情况下对案例冗余的处理方案。     

A fuzzy control scheme for video transmission in Bluetooth wireless

This paper is concerned with transmission of Moving Picture Expert Group (MPEG) video over a Bluetooth wireless network using a fuzzy approach. MPEG Variable Bit Rate (VBR) video sources suffer from long delay and excessive loss due to the sudden bursts in bit rate. Constant Bit Rate (CBR) encoding scheme may work well for a network with a guaranteed bandwidth. However, a Bluetooth channel is subject to wireless interference and can never guarantee a constant bandwidth. Subsequently, it is impossible to transmit a CBR video over Bluetooth wireless without data loss or image quality degradation. To resolve this problem, a fuzzy control system is introduced at the Host Controller Interface (HCI). The system consists of a traffic-shaping buffer whose role is to prevent excessive back-to-back cells being generated during the peak transmissions of MPEG video sources. The output bit rate of the traffic-shaping buffer is controlled by a fuzzy controller to ensure that the video stream from the host conforms to the traffic condition of the Bluetooth channel. Another fuzzy controller regulates the average arrival bit rate to the traffic-shaper to guarantee that the buffer is neither full nor empty. Computer simulation results demonstrate that the use of the fuzzy controllers reduces excessive data loss at the HCI as compared with an open loop VBR/CBR video transmission in Bluetooth.     

基于实例推理的产品概念设计模型研究

产品概念设计是设计过程中最具创造性的阶段。本分析了产品概念设计过程的特点及其主要研究内容，从概念设计中的功能设计角度出发，提出了基于实例推理的产品概念设计模型结构，采用面向对象技术进行实例的表示，通过基于实例的推理技术获得相似实例，进行相似实例的评价和修改，进而获得概念设计的最优解，对其关键技术进行了研究，在此基础上，开发了一个基于实例推理的产品概念设计原型系统，对系统所提出的模型和算法进行了实例验证。     

一个工艺实例的匹配方法

提出一个以无向特征依赖图（UFDG）表达零件特征和存储特征和存储特征间的相互依赖的拓扑关系，通过UFDG（子）图同构判别零件之间的相似性、通过零件的基它特征参数的相似性选择进一步筛选工艺实例的匹配方法。该方法具有较好的通用性和较高的求解效率。     

飞机故障诊断专家系统的软件实现

首先提出了开发飞机故障诊断专家系统的必要性 ,并简要说明了笔者所研制的软件的知识基础和设计与实现方法 ;介绍了基于事例的推理 (Case BasedReasoning ,CBR)的优越性 ,重点说明了该软件中事例的来源和事例库的构造 ;并详细介绍了自组织特征映射网络 (SelfOrganizingMap,SOM) ,以及其在该软件中的实现算法和程序结构简图 ;最后分析了该软件广泛的应用前景。     

An On-Line Multi-CBR Agent Dispatching Algorithm

Case-based reasoning (CBR) is an effective and fast problem-solving methodology, which solves new problems by remembering and adaptation of past cases. With the increasing requests for useful references for all kinds of problems and from different locations, keeping a single CBR system seems to be outdated and not practical. Multi-CBR agents located in different places are of great support to fast meet these requests. In this paper, the architecture of a multi-CBR agent system is proposed, where each CBR agent locates at different places, and is assumed to have the same ability to deal with new problem independently. When requests in a request queue are coming one by one from different places, we propose a new policy of agent dispatching to satisfy the request queue. Throughout the paper, we assume that the system must solve the coming request by considering only past requests. In this context, the performance of traditional greedy algorithms is not satisfactory. We apply a new but simple approach – competitive algorithm for on-line problem (called ODAL) to determine the dispatching policy to keep comparative low cost. The corresponding on-line dispatching algorithm is proposed and the competitive ratio is given. Based on the competitive algorithm, the dispatching of multi-CBR agents is optimized.     

PKTS view:一种多媒体数据库视图

在多媒体数据库管理系统中采用视图技术是一个新的课题。文章分析了逻辑视图和实视图在应用于MMDBMS时的不足,给出了一个多媒体数据库视图的时间成本和空间成本模型,并基于这些分析,提出了一种新的视图模式,较好地解决了该类应用中时间成本与空间成本的矛盾。     

低液限粉土的压实性能研究

结合子洲至靖边高速公路4个合同段的低液限粉土,采用试验和理论分析的方法,对该地区广泛存在的低液限粉土的压实性能进行了系统研究.首先,对该地区的低液限粉土进行了物理、力学性质试验,取得了基本的研究参数.其次,研究了低液限粉土的静力压实的机理和影响因素;基于长期稳定性的考虑,测定分析了CBR值,提出了考虑CBR值的低液限粉土的压实标准.     

基于案例的移动自组织网络安全管理体系结构

提出了一种基于案例的移动自组织网络安全管理体系结构，以基于案例推理技术（CBR）为例介绍了安全策略决策支持系统以及案例库的构建技术。