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面向基础教育阶段的教学资源推荐系统
张海东; 倪晚成; 赵美静; 杨一平
Source Publication计算机应用
2015-01-21
Volume34Issue:11Pages:3353-3356,3364
Other Abstract针对传统推荐方法应用于教学场景存在数据稀疏、缺乏对课程内容和教师上下文环境分析的问题,设计了一种面向基础教育阶段的网络教学资源推荐系统.该系统由数据层、离线层和在线层组成:1)数据层基于马尔可夫链和向量空间模型构建课程模型和资源模型,综合教师个人注册信息和课程模型的节点构建教师模型;2)离线层使用词频-逆向文件频率(TF-IDF)算法提取课程和资源的内容特征,初始化并优化数据层的课程模型和资源模型,进一步应用关联规则挖掘和相似度量方法,计算任意两资源或课程与资源之间的关系,并结合课程模型推理教师模型,产生用于推荐的中间结果;3)在线层采用加权混合的方式产生推荐资源列表.该系统现已应用于某教育资源共享平台中,可实现对其中60万条资源的个性化推荐.; Applying traditional recommendation algorithms to teaching area encounters with problems such as data sparsity, lack of analysis for lessons and teachers’ context. To tackle these challenges, a network teaching resources recommendation system was designed and implemented for Kindergarten through twelfth grade (K12) education. It was constructed by three layers as Data Layer, Off-line Layer and On-line Layer. (1) Data Layer: Modeling Course Model based on Markov chains, Resource Model based on Vector Space Model and Teacher Model based on teachers’ registration information and the Course Model nodes. (2) Off-line Layer: Content features of Course Model and Resource Model was extracted via TF-IDF algorithm, the relations between two resources, or between recourse and course was calculated using association rules mining and similarity measure, and Teacher Model was reasoned based on Markov chains. (3) On-line Layer: A weighted hybrid recommendation algorithm was proposed to generate recommendation list. Finally, the proposed system has been successfully applied in a real education resources sharing platform which consists of 600 thousand teaching resources.
Keyword推荐系统 马尔可夫链 教师上下文环境 课程模型 向量空间模型 基础教育阶段
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/13024
Collection综合信息系统研究中心
Corresponding Author倪晚成
Affiliation1.中国科学院自动化研究所,北京100190;中科院自动化所—鸿合科技智能教育联合实验室,北京100190
2.中国科学院自动化研究所,北京100190;中科院自动化所—鸿合科技智能教育联合实验室,北京100190
3.中国科学院自动化研究所,北京100190;中科院自动化所—鸿合科技智能教育联合实验室,北京100190
4.中国科学院自动化研究所,北京,100190
Recommended Citation
GB/T 7714
张海东,倪晚成,赵美静,等. 面向基础教育阶段的教学资源推荐系统[J]. 计算机应用,2015,34(11):3353-3356,3364.
APA 张海东,倪晚成,赵美静,&杨一平.(2015).面向基础教育阶段的教学资源推荐系统.计算机应用,34(11),3353-3356,3364.
MLA 张海东,et al."面向基础教育阶段的教学资源推荐系统".计算机应用 34.11(2015):3353-3356,3364.
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