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arXiv cs/0212014cs.LGcs.IR
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文本关键词提取:四种算法评价

Extraction of Keyphrases from Text: Evaluation of Four Algorithms

Peter D. Turney

摘要:

这份报告提出了一个实证评估的四个算法自动提取关键字和关键短语的文件。使用五个不同的文件集合的四种算法进行比较。对于每个文档,我们都有一组目标关键词,这些关键词是手工生成的。目标关键词是为人类读者生成的;它们不是为四种关键词提取算法中的任何一种而定制的。每个算法都通过算法的关键词与手动生成的关键词的匹配程度进行评估。这四种算法是(1)微软Word 97中的自动摘要功能,(2)基于Eric Brill的词性标记器的算法,(3)Verity Search 97中的摘要功能,以及(4)NRC的提取器算法。对于所有五个文档集合,NRC的Extractor会产生与手动生成的关键词的最佳匹配。

英文摘要:

This report presents an empirical evaluation of four algorithms for automatically extracting keywords and keyphrases from documents. The four algorithms are compared using five different collections of documents. For each document, we have a target set of keyphrases, which were generated by hand. The target keyphrases were generated for human readers; they were not tailored for any of the four keyphrase extraction algorithms. Each of the algorithms was evaluated by the degree to which the algorithm's keyphrases matched the manually generated keyphrases. The four algorithms were (1) the AutoSummarize feature in Microsoft's Word 97, (2) an algorithm based on Eric Brill's part-of-speech tagger, (3) the Summarize feature in Verity's Search 97, and (4) NRC's Extractor algorithm. For all five document collections, NRC's Extractor yields the best match with the manually generated keyphrases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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