摘要
校园网络的普及,WiFi热点的覆盖,促使E-learning广泛开展,但随之而来的电子作业抄袭现象引起了教育工作者关注。通过对大量抄袭样本的研究,针对机房环境下的拷贝抄袭,采用信息隐藏技术对原创信息进行加密,利用高嵌入率的水印算法将秘密信息隐藏到电子作业的字符格式之中,达到侦测抄袭嫌疑的目的。而对网络环境下的电子作业抄袭则综合应用向量空间法和编辑距离模型进行相似度检测。该研究在我院计算机基础网络教学平台的电子作业收集、批改系统中发挥了重要作用,得到了有效性验证。
Basd on tile research of a large numbers of plagiarized electronic assignment samples, aimed at the plagiarism in compuler labs, the information hiding teehnology is used to embed the secret information into format of characters of the electronic assignments with encryption teehnique and high rate of embedded watermark algorithm in order to find plagiarism of electronic assignments. Aimed at the plagiarism on the lnternet, the vector space algorithm and edit distance algorithm are used to judge the similarity between electronic assignments and the related documents on line. The application of the strategy in the College of Arts and Seience proves that it is effective and has played an important role in anti-plagiarism of electronic assignments.
出处
《实验室研究与探索》
CAS
北大核心
2013年第4期79-82,91,共5页
Research and Exploration In Laboratory
基金
湖北省教育科学"十二五"规划2012年度立项课题(2012B415)
湖北省高等学校省级教学研究项目(2011468)
关键词
电子作业
反抄袭
电子水印
向量空间法
编辑距离法
electronic assignments
anti-plagiarism
digital watermarking
vector space algorithm
edit distancealgorithm
