Semantic Web 2.0

The Web 2.0 phenomena is poised to set the creative tone for software developers for years. It could even become a technology wave--one that the Semantic Web would do well to catch.     

Heraclitus: A Framework for Semantic Web Adaptation

The World Wide Web's constant growth and transformation offers great opportunities - and poses many challenges for exploitation. The semantic Web has emerged as a possible answer to these challenges by offering an approach in organizing and sharing the Web, but it doesn't explicitly consider user needs and requirements. Heraclitus is a framework for semantic Web adaptation in which user needs and requirements are the driving force, using text and Web usage mining to support Web site ontology and topology evolution. The result is improved user interaction with the semantic Web     

A Flexible Ontology Reasoning Architecture for the Semantic Web

Knowledge-based systems in the semantic Web era can make use of the power of the semantic Web languages and technologies, in particular those related to ontologies. Recent research has shown that user-defined data types are very useful for semantic Web and ontology applications. The W3C semantic Web best practices and development working group has set up a task force to address this issue. Very recently, OWL-Eu and OWL-E, two decidable extensions of the W3C standard ontology language OWL DL, have been proposed to support customized data types and customized data type predicates, respectively. In this paper, we propose a flexible reasoning architecture for these two expressive semantic Web ontology languages and describe our prototype implementation of the reasoning architecture, based on the well-known FaCT DL reasoner, which witnesses the two key flexibility features of our proposed architecture: 1) It allows users to define their own data types and data type predicates based on built-in ones and 2) new data type reasoners can be added into the architecture without having to change the concept reasoner     

一种基于服务质量的语义Web服务发现框架

在Web服务发现过程中,不同的用户希望根据自己的情况或个性化的需求进行服务选择,如何提供满足用户服务质量（QoS）需求的服务是语义Web服务应用急需解决的问题。基于OWL规范定义了一个QoS元模型——OWL-QoS,并将其应用于Web服务描述当中。根据提出的QoS元模型给出了一个基于QoS的语义Web服务发现框架,并从基本描述、IOPE、QoS三个层次实现了服务匹配。实验结果表明,与传统语义Web服务发现方法相比,该方法能显著提高服务匹配精度和效率。     

基于QoS的语义Web服务选择框架

服务质量（QOS）成为动态选择满足用户需求的Web服务的关键因素。然而目前Web服务的QoS信息描述缺乏语义性,且Web服务的选择还不能做到完全自动化。文章提出一种Web服务的QoS本体结构,并在此QoS本体和原有的语义Web服务的基础上提出基于QoS的语义Web服务选择框架（QSF4SWS）。研究表明,该框架不仅增强了Web服务QoS描述的语义性,而且还能够实现Web服务的动态发现与自动选择。     

SOAW2 for Managing the Web 2.0 Framework

Web 2.0 predicates an improved and seamless user interaction and management of Web environment and resources, guaranteeing required services and a flexible generation of user applications. This occurs via an agile composition of services from available application (foundation) tools. Hence, Web 2.0 developers merely create the core of these applications, while the boundaries dynamically change and expand in accordance with user interaction (a use model). In other words, the resources, tools, and services act as plug-in entities that users can add or remove from the application's operational framework according to their needs. In this article we propose a service-oriented architecture, or SOA, model for managing the operation of Web 2.0 platform actors, improving the services provided to consumers     

基于扩展UDDI语义Web服务发现框架的研究

传统Web服务采用简单分类和关键字的服务发现方法,造成查准率与查全率低。语义Web服务是Web服务的语义扩展,它能有效提高服务发现的效率。本文基于OWL-S、描述逻辑,采用Agent技术、增强UDDI注册中心以及DL推理机JRacer,提出一个语义Web服务发现框架,使得请求与发布的服务能进行语义匹配,从而提高了服务的查准率和查全率。     

使用框架构建Web应用系统

为了更好地构建易编写、结构清晰、可扩展的Web应用系统，人们提出了大量的Web框架，其中最具代表性的就是Struts。在一定程度上，Web框架达到了这一要求。文中对Struts作了简单的分析和介绍；再结合具体的Web应用要求，以面向对象的设计方法和设计模式的思想为指导，根据这些具体应用的要求和特点扩展了Struts框架。扩展后的框架较好的实现了模式一视图一控制器中的控制器层，同时也解决了一些实际的Web应用系统中的常见的如权限验证、日志记录等问题。     

语义Web及其应用

语言文Web是下一代Interuet的发展方向。语义Web的定义、分层结构进行了概述，详细总结和研究了语义Web在Web服务、P2P网络、知识管理、E-learning、智能信息检索和语义Web挖掘、网格计算等多个领域的应用。     

Metcalfe's law, Web 2.0, and the Semantic Web

The power of the Web is enhanced through the network effect produced as resources link to each other with the value determined by Metcalfe's law. In Web 2.0 applications, much of that effect is delivered through social linkages realized via social networks online. Unfortunately, the associated semantics for Web 2.0 applications, delivered through tagging, is generally minimally hierarchical and sparsely linked. The Semantic Web suffers from the opposite problem. Semantic information, delivered through ontologies of varying amounts of expressivity, is linked to other terms (within or between resources) creating a link space in the semantic realm. However, the use of the Semantic Web has yet to fully realize the social schemes that provide the network of users. In this article, we discuss putting these together, with linked semantics coupled to linked social networks, to deliver a much greater effect.     

A Requirements Driven Framework for Benchmarking Semantic Web Knowledge Base Systems

A key challenge for the semantic Web is to acquire the capability to effectively query large knowledge bases. As there will be several competing systems, we need benchmarks that will objectively evaluate these systems. Development of effective benchmarks in an emerging domain is a challenging endeavor. In this paper, we propose a requirements driven framework for developing benchmarks for semantic Web knowledge base systems (SW KBSs). In this paper, we make two major contributions. First, we provide a list of requirements for SW KBS benchmarks. This can serve as an unbiased guide to both the benchmark developers and personnel responsible for systems acquisition and benchmarking. Second, we provide an organized collection of techniques and tools needed to develop such benchmarks. In particular, the collection contains a detailed guide for generating benchmark workload, defining performance metrics, and interpreting experimental results     

Using the Semantic Web for linking and reusing data across Web 2.0 communities

Large volumes of content (bookmarks, reviews, videos, etc.) are currently being created on the “Social Web”, i.e. on Web 2.0 community sites, and this content is being annotated and commented upon. The ability to view an individual's entire contribution to the Social Web would be an interesting and valuable service, particularly important as social networks are often being formed through created content and things that people have in common (“object-centred sociality”). SIOC is a Semantic Web research project that aims to describe online communities on the Social Web. This paper describes how SIOC and the Semantic Web can enable linking and reuse scenarios of data from Web 2.0 community sites, and introduces a SIOC Types module to further specify the type of content items and act as a “glue” between user posts and the content items created and annotated by users.     

Ontology在Semantic Web Services中的应用综述

介绍了Web Services的基本原理和Ontology的基本概念。基于这两种技术的结合,简单描述了多种基于本体的Web语言的发展,并重点阐述其中的OWL语言及其在Web Services中应用OWL-S的主要内容。最后介绍本体在语义Web服务中的一些拓展性的应用。     

Web 2.0在网络课程中的应用

Web 2.0技术的飞速发展为解决目前网络课程中存在的问题带来了新的思路,在介绍Web 2.0的内涵及特点的基础上,阐述了目前网络课程存在的问题,并以RSS订阅在网络课程中的实现为例展现了Web 2.0在网络课程进行应用的技术优势。     

The two cultures: Mashing up Web 2.0 and the Semantic Web

A common perception is that there are two competing visions for the future evolution of the Web: the Semantic Web and Web 2.0. A closer look, though, reveals that the core technologies and concerns of these two approaches are complementary and that each field can and must draw from the other’s strengths. We believe that future Web applications will retain the Web 2.0 focus on community and usability, while drawing on Semantic Web infrastructure to facilitate mashup-like information sharing. However, there are several open issues that must be addressed before such applications can become commonplace. In this paper, we outline a semantic weblogs scenario that illustrates the potential for combining Web 2.0 and Semantic Web technologies, while highlighting the unresolved issues that impede its realization. Nevertheless, we believe that the scenario can be realized in the short-term. We point to recent progress made in resolving each of the issues as well as future research directions for each of the communities.     

城市空间信息及服务集成框架

针对数字城市的需求,构造了一个城市空间信息及服务集成框架,实现数据互操作、软件互操作和应用互操作．集成框架分为Web应用、服务集成器、分布的服务和分布的信息4个层次,很好地组织管理并集成了分布在城市不同部门的异构空间信息及空间应用服务和UDDI注册的商业服务．根据该框架,实现了一个基于Web Services、GML和元数据技术的集成系统——π系统,并且搭建了一个空间信息及服务集成的模拟环境,对π系统进行了测试．     

针对复杂交互界面应用的Web开发框架

针对一些基于Web且交互界面比较复杂的应用系统,通过结合Windows客户端的一些先进技术,开发出一套基于J2EE基础框架的上层Wcb开发框架。该框架充分利用Windows客户端优势以及J2EE在服务器端的优势,提供一组UI组件以及同后台服务的无缝连接,简化开发复杂的用户交互界面的过程。     

基于语义网的知识管理系统框架设计

针对现有知识管理系统缺乏语义支撑的问题，结合知识的社会化、外在化、组合化、内在化螺旋动态转化过程，把知识的处理过程转化为知识俘获、知识存储、知识处理、知识使用这样一个动态循环过程，设计了一个基于语义网的知识管理系统框架，最后概述了开发系统用到的关键技术。