Measuring the Structural Similarity of Semistructured Documents Using Entropy

Measuring the Structural Similarity of Semistructured Documents Using Entropy
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使用熵测量半结构化文档的结构相似性

DOI:
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发表时间:
2007
期刊:
Very Large Data Bases Conference
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通讯作者:
S. Helmer
S. Helmer
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文献类型:
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作者:
S. Helmer

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提出了一种基于熵的半结构化文档结构相似性度量方法。在从两个文档中提取结构信息后,我们使用Ziv-Lempel编码或Ziv-Merhav交叉解析来确定熵,从而确定文档之间的相似性。据我们所知,这是第一个真正的线性时间的方法来评估结构相似性。在实验评估中,我们证明了我们的算法在聚类质量方面的结果与现有的方法相当,甚至更好。
We propose a technique for measuring the structural similarity of semistructured documents based on entropy. After extracting the structural information from two documents we use either Ziv-Lempel encoding or Ziv-Merhav crossparsing to determine the entropy and consequently the similarity between the documents. To the best of our knowledge, this is the first true linear-time approach for evaluating structural similarity. In an experimental evaluation we demonstrate that the results of our algorithm in terms of clustering quality are on a par with or even better than existing approaches.