农业在线学习资源知识图谱构建与推荐技术研究  

RESEARCH ON THE CONSTRUCTION OF KNOWLEDGE GRAPH AND RECOMMENDATION TECHNOLOGY OF AGRICULTURAL ONLINE LEARNING RESOURCES

作　　者：赵继春 孙素芬 郭建鑫 钟瑶 王洪彪 王敏 秦莹 Zhao Jichun;Sun Sufen;Guo Jianxin;Zhong Yao;Wang Hongbiao;Wang Min;Qin Ying(Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China;The Research Center of Beijing Engineering Technology for Rural Remote Information Services,Beijing 100097,China)

机构地区：[1]北京市农林科学院,北京100097 [2]北京市农村远程信息服务工程技术研究中心,北京100097

出　　处：《计算机应用与软件》2022年第8期69-75,共7页Computer Applications and Software

基　　金：北京市科技计划项目(Z151100002115029);北京市社会科学基金项目(17JYC020)。

摘　　要：针对农业网络在线学习资源分散杂乱、应用信息过载、个性化服务效果不理想问题及农民信息获取技能欠缺的现状,以领域知识图谱方式提升个性化学习资源推荐效率。通过梳理北京农业网络在线平台的学习资源知识体系,提出基于LDA标签生成的领域知识图谱构建方法,并构建涉农学习资源知识图谱,设计研发基于知识图谱语义相似度的协同过滤推荐系统。实验结果表明,该系统通过底层图谱化支持,具有较好的语义支持,推荐准确率达到84.27%,实现了涉农学习资源知识图谱的可视化、关联分析及其运维管理,为用户提供个性化、定制化的学习资源,有效提升用户在线学习体验,为知识图谱构建及其应用研究提供新的视角。In view of the problems of scattered and disordered agricultural online learning resources,overload of application information,unsatisfactory personalized service effect,and lack of information acquisition skills for farmers,domain knowledge graph is researched to improve the efficiency of personalized learning resource recommendation.Through combing the learning resource knowledge system of Beijing agricultural online platform,the construction method of domain knowledge graph based on LDA tag generation was put forward,the knowledge graph of agricultural related learning resources was constructed,and a collaborative filtering recommendation system based on semantic similarity of knowledge graph was designed and developed.The experimental results show that the system has better semantic support and recommendation accuracy is 84.27%.It realizes the visualization,association analysis and operation and maintenance management of knowledge graph of agricultural related learning resources,which provides personalized and customized learning resources for users and effectively improves the online learning experience of users,and provides a new idea for knowledge graph construction and application research.

关 键 词：知识图谱 农业在线学习 个性化 语义 推荐 LDA算法 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]