中学文科教材全文检索系统的设计与实现

发布时间：2018-05-18 02:39

本文选题：中学文科教材 + 全文检索　；参考：《中央民族大学》2017年硕士论文

【摘要】：随着信息时代的来临和信息技术的迅猛发展,学习资源不仅仅以纸为载体,将一部分学习资源信息化、电子化已经是现代教育的发展趋势,其中教材资源就包括在这学习资源中。学生、教师在大规模的信息中如何快速精确的找到自己所需要的学习信息,而不是迷失在茫茫数据的大海中,这是一个需要思索的问题。全文检索是对文档集中的词建立倒排索引,记录每个词语在文档集中出现的频率和位置,在进行查询时会对倒排索引进行检索,提高检索效率,而全文检索系统就是应用全文检索技术建立起来的系统体系。因此,针对教育领域的全文检索系统的开发与实现是有意义的。本次毕业设计使用Elastic Search搜索引擎调用底层Lucene工具包开发了中学文科教材全文检索系统,主要工作内容如下:(1)收集和整理中学文科教材语料;(2)对全文检索的相关技术进行研究,对全文检索技术中计算相似度值的公式进行了分析,提供了条件检索的功能,包括全文检索、复合检索、作者、科目、年级、题目检索类别;(3)在系统后台我们使用ES库来存储收集到的教材文本,并且将这些文档使用IK分词器进行分词,通过ES建立倒排索引,在检索模块使用MVC框架来搭建,将系统的数据、显示、业务功能分成不同的模块,使得开发过程中逻辑层次更加清晰,在后期的维护中也更加便捷;(4)系统前台页面使用JSP技术,为信息检索提供界面,前台页面主要包括了查询页、结果列表页和信息详情页,通过接口的调用和方法类的实现,将检索得到的信息展示在Web页面并且在前台检索结果页面高亮显示检索词。本次毕业设计希望可以帮助学生和教师在进行检索之后,对与输入关键字相关的各大初中文科教材内容有一个整体的把握,便利用户查找感兴趣的相关内容。本次毕业设计将有助于用户提高检索效率,促进用户深入地学习相关知识,提高教学质量。
[Abstract]:With the advent of the information age and the rapid development of information technology, learning resources not only take paper as the carrier, part of the learning resources information, electronic has been the development trend of modern education. Among them, the textbook resources are included in the learning resources. It is a problem that students and teachers need to think about how to find the learning information they need quickly and accurately in the large-scale information, instead of being lost in the sea of vast data. Full-text retrieval is to build inverted index of words in document set, record the frequency and position of each word appearing in document set, search inverted index in query, improve retrieval efficiency. And the full-text retrieval system is the system established by using the full-text retrieval technology. Therefore, it is meaningful to develop and implement the full-text retrieval system in the field of education. This graduation project has developed a full-text retrieval system for liberal arts textbooks in middle schools using the Elastic Search search engine calling the underlying Lucene toolkit. The main work is as follows: 1) collecting and sorting out the corpus of Chinese liberal arts textbooks. (2) researching on the related techniques of full-text retrieval. This paper analyzes the formula of calculating similarity value in full-text retrieval technology, and provides the functions of conditional retrieval, including full-text retrieval, compound retrieval, author, subject, grade, etc. In the background of the system, we use es library to store the collected text of teaching materials, and use IK participle to segment these documents, build inverted index through es, and use MVC framework to build the retrieval module. The data of the system, display, business function are divided into different modules, which makes the logic level more clear in the development process, and also more convenient in the later maintenance) the system foreground page uses JSP technology to provide the interface for information retrieval. The front page mainly includes the query page, the result list page and the information detail page, through the interface call and the method class realization, displays the retrieved information in the Web page and highlights the key words in the foreground retrieval result page. This graduation project hopes to help the students and teachers to have a comprehensive grasp of the contents of the liberal arts textbooks related to the input keywords after the retrieval, and to facilitate the users to find the relevant content of interest. This graduation project will help users to improve the efficiency of retrieval, promote the users to learn relevant knowledge, improve the quality of teaching.
【学位授予单位】：中央民族大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP391.3;G434

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