Research And Application Of Web Page Segmentation And Transformation Method For Mobile Terminal

With the wide spread of mobile terminal and the continuous development of mobile communication technology, there is growing demand for browsing web page with mobile terminal. However, it is difficult to browse web pages on mobile terminal due to small screen, limited memory of mobile terminal and the bandwidth limitation of wireless network and so on.Redesigning web page by markup language defined by WAP could meet the demand of mobile user; yet, it is unfeasible to redesign all web pages because of the diversity of mobile terminal and the larger number of web page. A better way is to transform web page into XHTML MP page which is suitable for browsing on mobile terminal, so that the current web sites of Internet can be migrated to the wireless network of mobile terminal.In this thesis, the work carried out as follows:1. This thesis proposes a web page segmentation algorithm. It firstly marks the nodes of DOM tree of web page by the tag of div and table, then traverses the DOM tree by depth first and segments the nodes in three cases according to the result of nodes marking. Experiment results show that the algorithm has a fairly good recall ratio.2. This thesis studies relevant parametric features of mobile terminal and adaptation rules of web content, which lay a theoretical foundation for research and application of web page transformation; and proposes a tag conversion method based on sequential binary tree, the method utilizes ordered search and tag mapping to optimize the process of tag conversion. Experiment results show that the method can improve the efficiency of tag conversion.3. On the basis of the overall design of Web page transformation system for mobile terminal and the previous technology research, and constraints about requirement of practical application system, this thesis conducts applied research on the key technologies of web page transformation, such as filtering of noise information, image self-adaptation, content optimization, page reconstructing and caching. The effective scheme for the practical application of relevant technologies will be provided.