A new character-based indexing method using frequency data for Japanese documents
A new character-based indexing method using frequency data for Japanese documents
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一种使用日语文档频率数据的基于字符的新索引方法
DOI：
10.1145/215206.215347
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发表时间：
1995
影响因子：
4.3
通讯作者：
Iwasaki Masajirou
中科院分区：
文献类型：
--
作者：
Ogawa Yasushi;Iwasaki Masajirou
基于字符的索引更适合日文IR系统，因为日文单词没有分段。本文提出了一种新的字符索引方法，改进了先前基于字符类将字符对索引条目划分为不相交组的方法。由于频率数据用于确定字符对的散列条目并建立特殊的字符串索引，因此搜索速度和精度都得到了提高。此外，位字符串使用大小块进行管理，因此加快了注册和检索速度。利用专利摘要进行的实验表明，这些建议是非常有效的。
A character based indexing is preferable for Japanese IR systems since Japanese words are not segmented. This paper proposes a new character indexing method to enhance our previous method which divided character pair index entries into disjoint groups based on character classes. Since frequency data is used to determine hashed entries for character pairs and to establish a special string index, both search speed and precision are improved. Moreovel<, bit strings are managed using small and large blocks, so registration and retrieval are accelerated. Experiments using patent abstracts showed these proposals are quite effective.