本系統方法的主要優點有以下三點：(1)取得使用者存取設備軟、硬體環境資訊，以環境導向為基礎。(2)優先排除掉完全無法呈現的物件，避免浪費擷取網頁內容物件的時間。(3)利用網頁內容物件權重的設計，配合使用者存取設備的等級，執行網頁內容物件呈現的選擇。 Along with the fast change of state-of-the-art technology in mobile and wireless internet services, people can use various hand-held devices such as PDA, Palm, Smart phone, Java phone…etc to access, save and retrieve the data resources in internet environment. The variety of hand-held devices means that the same web page in internet environment must be able to be displayed in different access devices. However, the biggest difference among those access devices is the size of the display frame. It requires some adaptation procedure for an original web page to fit into an access device properly. This research is mainly aimed at establishing a web content adaptation procedure in order to complete the improvement of web content display in heterogeneous devices.
This research adopts Semantic Web and Ontology relevant ideas and technology, using Cocoon Framework to get the software and hardware device context information in Composite Capabilities/Preferences Profile ( CC/PP ), checking information based on CC/PP database provided by associate vendors, and inferring the user’s device data content by inference rule to get the most complete user’s device information as the ground for web page content adaptation.
We are raising a web page content adaptation method based on Context-Aware service. This method can be applied with two phases after obtaining the software and hardware context information of the user’s access device: (1) Agent sorts and filters out the content display of original web pages according to the retrieved device information; (2) Displayable web content pages shall be handled properly and then adapted to certain web language such as HTML, CHTML and WML...etc which is suitable for user’s device so that the web content can be properly displayed on user’s device finally.
Three advantages from the method of this system are: (1) To get the software and hardware context information of user’s access device based on Context-Aware; (2) To exclude all completely undisplayable object first in order to evade wasting the time of object retrieve; (3) To use the Web Content Weighted Function accompanied with the level of user’s access device to execute the display option of webpage content.
