导　　师： 蒋运承

学科专业： 081203

授予学位： 硕士

作　　者： ;

机构地区： 广西师范大学

摘　　要： 随着本体在计算机领域广泛的应用,本体的规模和复杂性也日益膨胀。由于目前本体构建方法缺乏一种科学的、规范的、通用的开发流程,导致本体的构建和重用面临着不利于理解、维护和共享等问题。为解决上述问题,本体的模块化构建与重用成为当前语义网和本体工程等领域研究的热点。 本体模块化构建是指按照一定的原则将一个待构建的复杂领域,自顶向下分解为多个相对独立,又互相关联的“子领域”,然后对每个子领域进行独立的构建,形成多个“本体模块”。将若干个本体模块按照适当的原则和方法组合起来,就形成了一个模块化本体库。本体模块化构建思想的提出,使得整个本体中知识定义及结构的科学性不会由于开发人员自身知识的局限性而受到影响。 目前,关于本体模块化构建的理论和方法有很多,主要有:/(1/)分布式描述逻辑,/(2/)C-OWL,/(3/)ε-Connections理论,/(4/)P-DL/(Package-based Description Logics/),/(5/)分布式动态描述逻辑。通过比较各种方法的特点,并结合项目实际的需要,本文提出了一种基于ε-Connections理论的旅游领域本体构建方法,并在此基础上根据改进的Tableau算法,用pellet推理机实现对多个本体模块的联合推理。 由于知识的共享性是本体一个非常重要的特点,为了在实际的应用中更好的体现出这一优势,本文进一步对模块化本体库的重用问题进行了研究。 本体重用是指从用户需求分析出发,在现有本体基础上构造新本体。现有本体将作为新本体的一部分出现。也就是说,在本体构建过程中,开发人员可以根据待构建本体对某领域知识的需求,将已有本体中与这些领域知识相关的部分或全部知识作为一个重用模块,导入到新的待构建本体中。这种重用的思想使得开发人员不必在待构建本体中,对已经在现有本体中定义过的 As ontology becomes a wide range of applications in the computer field, the size and complexity of the ontology are also increasingly expanding. Because the current approaches to ontology construction are lack of a scientific, standardized, and common development process, it leads to the construction and reuse of ontology face the problems which are not conducive to understand, maintaining and sharing. To solve these problems, the modular construction and reuse of ontology become a current hotspot in Semantic Web and ontology engineering. The modular construction of ontology is dividing a complex field to be built into multiple independent and inter-related“sub domain”from top to down, according to certain principles. Then each sub domain is constructed independently and formated multiple“ontology modules”. Combining the number of ontology modules according to appropriate principles and approaches, we get a modular ontologies.The idea of modular construction of ontology won’t make the scientificity of the definition and structure of knowledge in the whole ontology be affected because of the developer's own limitations of knowledge. Currently, there are many theories and methods about the research of modular construction of ontology. The main ones are: /(1/) DDL /(Distributed Description Logics/), /(2/) C-OWL, /(3/)ε-Connections theory, /(4/) P-DL/(Package-based Description Logics/), /(5/)D3L/(Distributed Dynamic Description Logics/). By comparing the characteristics of various methods, and combined with the actual needs of the project, this paper proposes a method of constructing tourism domain ontologies based onε-Connections theory, and use the reasoner—pellet to carry out reasoning on more than one ontology, which based on the improved Tableau algorithm. As knowledge sharing is a very important feature of ontology. In order to better reflect the advantage of this feature in practical applications, this article makes a further study for the reuse of modular ontologies. Onto

关 键 词： 领域本体 模块化 理论 本体重用

领　　域： [自动化与计算机技术] [自动化与计算机技术]