Concerning the present problem of a growing academic plagiarism，the algorithm of the text copy detection based on text structure tree is put forward．A paper can be divided into a construction tree with three layers：the uppermost root node is a text；branch node represents a sentence bag；leaf node denotes sentence.According to synthetic similarity and a function this paper computes sentence similarity，and similarity of leaf node is based on maximal sentence similarity．At the same time，the upper similarity is derived from the adjacent lower similarity．Finally，papers of China Journal Full-Text Database is chosen for a test，and the experimental result shows that this algorithm is feasible and efficient．
王森,王宇. 基于文本结构树的论文复制检测算法[J]. 现代图书情报技术, 2009, (10): 50-55.
Wang Sen,Wang Yu. Algorithm of the Text Copy Detection Based on Text Structure Tree. New Technology of Library and Information Service, 2009, (10): 50-55.
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