The extract process have three steps : constructing echg of java system from java profile , extracting system ' s lexical relational model by scanning source code and analyzing the polymorphism calling location , constructing the semantic model by rule - based model mapping of lexical model 抽取过程有三个阶段:构造系统的echg ,扫描程序的源代码和多态点分析得到系统的词法层次模型,通过基于规则的推理转换词法模型为语义模型。
In view of the poor experimental environment of computer network , the author compiles the textbook of experiments and constructive programs about network experimental environment with an aim to develop students ' capacities in the following aspects : ( 1 ) the ability of analyzing software and hardware products ; ( 2 ) the ability of maintaining and repairing software and hardware products ; ( 3 ) the ability of designing , experimenting and developing software and hardware ; ( 4 ) the ability of studying , mastering and utilizing present equipments , especially the integration ability of organizing and constructing system application environment 摘要针对计算机网络实验条件差这一状况,作者结合实际情况,编写了实验教材和网络实验环境的建设方案,并在以下几个方面提高学生的专业能力:分析软、硬件产品的能力;维修软、硬件产品的能力;设计软、硬件和试验开发的能力;学习、掌握和应用现有设备的能力,特别是组织构造系统应用环境的集成能力。
The content of this paper is arranged as foll owing : chapter 1 introduces the concept of credit , credit risk and credit assessment , as well as the history and development of credit assessment ; chapter 2 introduces the history of ai technology , and the background of expert system and neural network . characters and disadvantages of expert system and neural network are presented respectively and the necessity of combining expert system and neural network is lightened ; chapter 3 shows the process of dealing with sample data , including the treatment of exceptional data and factor analysis , and puts forward the concrete framework of the mixed - expert credit assessment system ; chapter 4 introduces concept of object - oriented technology , and constructs object model and functional model after analyzing the whole system . it also illustrates the implementation of concrete classes by an example of rule class and the inference algorithm in the form of pseudocode ; chapter 5 introduces the structure of the whole system , the major functional models and their interfaces , and the characteristic of the system is also generalized ; chapter 6 summarizes the whole work , and points out the remaining deficiencies as well as the prospective of this method 本文具体内容安排如下:第一章介绍了信用、信用风险、信用评价的概念,回顾了信用评价的历史、发展和现状,并综合各种信用评价模型,指出这些模型各自的优缺点:第二章简单描述了人工智能技术,着重介绍有关专家系统与神经网络的基础知识,通过总结它们的优缺点,指出结合专家系统与神经网络构造混合型专家系统的必要性;本章还介绍了神经网络子模块的概念,提出了混合型专家系统的一般框架与设计步骤:第三章对样本数据进行处理,包括异常数据的剔除、因子分析等,提出了信用评价混合型专家系统的具体框架结构,介绍了系统知识库的主要部分、基于优先级的正向推理机制的流程、以及基于事实的自动解释机制的具体实现方法;第四章介绍了面向对象技术,进而采用面向对象对信用评价系统进行分析,建立了对象模型和功能模型,并在此基础上,采用c + +语言以规则类为例说明系统中具体类的实现,用伪代码的形式描述了推理的算法;第五章描述了整个系统的结构,对系统主要功能模块和界面进行了介绍,并总结系统的特点;第六章总结了全文,指出本文所构造系统存在的不足以及对将来的展望。
Component - based debugging is a new structural analysis approach that addresses this problem by analyzing the structure of each component in a model to separately locate faulty components . the analysis procedure is performed recursively based on the depth - first rule . it first generates fictitious equations for a component to establish a debugging environment , and then detects structural defects by using graph theoretical approaches to analyzing the structure of the system of equations resulting from the component 该语言采用数学方程统一不同领域的模型描述,支持基于组件的陈述式非因果建模,使得可以在一个统一框架内组合不同领域的模型组件构造系统模型,具备模型重用性好便于数据交换建模简单等许多优点,非常适合于复杂多领域物理系统建模。
In this paper , the real - time detecting method for harmonic current need only that the constructed voltage system be in step with the real voltage system ( which can be obtained by cross - zero detection to voltage waveform ) , meanwhile , we have testified in concerned chapter that the phase is not important for the constructed voltage system 本文所提出的谐波电流实时检测方法,其前提只是要求构造系统与原有电压系统同步(这可以通过对电压波形的过零检测来实现) ,而对于构造系统的相位却没有严格的要求,本文并在相应位置给予了其证明。
Based on the study of geological background and structural settings , and with the geological event as the main thread , the author analyzed the development history of the regional ore - forming structures , especially , the new - forming and inherited structural systems since yanshanian movement , and the range - basin structures of marginal - pacific ore - forming domain , and the thermo - uplifting structure of the lushan ore - body as well as the yiwulushan metamorphic core complex , which are three different scale ore - forming structural systems 论文在紧密结合地质背景、构造背景研究的基础上,以地质事件为主线,分析该地区域成矿构造的成生历史,特别是燕山运动以来继承及新生的构造体系格架与滨太平洋成矿构造域的盆岭构造、闾山岩体热隆、变质核杂岩等3个不同级别的区域成矿构造系统。
The key studied areas are the paishanlou , daban , dayintaogou , wujiazi gold deposits . in terms of the study of regional structures , geophysics , and geochemistry , and necessary tectono - physical and numerical modeling , as well as studies of ore - forming and ore - controlling structures , the author holds that the detached - ductile sheari ng zone of the metamorphic core complex is the main ore - controlling structural system , and the regional mineralization is related with the regional ore - forming structural systems which are controlled by compounding of regional structural systems with different time and grade 重点以排山楼、大板、大樱桃沟、五家子等金矿矿田构造调查为基础,以区域地质构造、地球物理、地球化学研究为背景,辅以成矿构造物理模型、数学模型,通过成矿构造、控矿构造研究,将本区金矿的成矿构造确认为变质核杂岩拆离滑脱剪切带,并且是与区域成矿构造系统相联系,在不同时期、不同级序、不同力学性质构造体系成分复合条件下成矿。
Software component is one of the key technologies of software reuse . in recent years , based on the infrastructure provided by middleware , by standardizing the runtime component specification , the bottom - up way of building software systems from components has been very effective , popular , and successful 软件构件技术是支持软件复用的核心技术之一,近年来,依靠中间件平台提供的基础设施,通过标准化的运行级构件的规约,为使用标准软件构件构造系统提供了一种自底向上的有效途径,得到了广泛的成功应用。