面向Web的多媒体信息提取及其教育应用-教育技术学专业毕业论文.docxVIP

论文详细介绍了系统的整体结构、数据库结构、关键编程技术和小学各年级、各 论文详细介绍了系统的整体结构、数据库结构、关键编程技术和小学各年级、各 学科主题词的搜集方法，并对该系统进行了初步实验。实验结果表明，本文提出 的面向Web的多媒体信息提取方法具有较好的效果，对提高多媒体信息检索系 统的查全率与查准率具有积极意义。论文最后指出了系统的不足之处和需进一步 研究探索的方向。 【关键字】 Web多媒体；信息提取：相关文本；多媒体语义；基础教育 【分类号】 G434 Ⅱ ne ne Research oil Methods ofⅥ，e1)Ioriented Multimedia Information Extracting and its Application in Education ABSTRACT With the rapid development of Internet,there∽a lot of multimedia information l龄OUlC．es in the W曲．It bcconle--s mole柚d nlorc difficult to look for interesting lesource because of disorder,distribution and explosive increase of multimedia information res01．1／ces in the Web．Commmivism puts emphasis 011 using information leSources to support the learning and thinks that eonstruetivism learning environment should offer relative information lesollrc．燃which a∞sele,etive。abandunt,convenient for learners including image，audio，video，flash and so oil Web multimedia information leSOUlCes play great role in construction of the eonsm删vism learning environment and learning ofthe learners．Therefore，this thesis researches the method of web-oriented multimedia information a(n瓢蚯ng and its application in elementary education-oriented individuality system of indexing web multimedia．This thesis research impacts consll3硎on oftlae eonsm蜘vism learning environment actively． The thesis summarizes the present methods of exlaaeting information of web multimedia,separates them into two categories：the method based on multimeAia content and the method based on text,and points out their merits and faults．The method ofextraetiag multimedia information based on text is researched and realized． Web multimedia information n镕ou“：es often embed in Web pages with sonae relevant describing text．Multimedia relevant text that embeds in Web page and has semantic relation with multimedia includes the link text,the anchor text,the surrounding text and the environment text．The thesis which based 013．the structure and revelatory rules to web page’s segmentation