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1. 发明授权

US6003043A Text data registering and retrieving system including a database storing a plurality of document files therin and a plural-character occurrence table for a text index and an update text buffer to retrieve a target document in cooperation with the database 失效
标题翻译：文本数据注册和检索系统，包括存储文本索引的多个文档文件和多个字符出现表的数据库和更新文本缓冲器，以与数据库一起检索目标文档
公开(公告)号：US6003043A
公开(公告)日：1999-12-14
申请号：US956481
申请日：1997-10-23
申请人： Atsushi Hatakeyama , Shunichi Torii , Nobuo Kawamura , Yasushi Kawashimo
发明人： Atsushi Hatakeyama , Shunichi Torii , Nobuo Kawamura , Yasushi Kawashimo
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30011 , Y10S707/99933 , Y10S707/99943 , Y10S707/99953 , Y10S707/99954
摘要： A text data registering and retrieving method capable of improving the transaction processing performance is provided. The document number of a document for which deletion or replacement has been newly requested is registered in an updated document number list. The text data of the document for which insertion or replacement has been newly requested is registered in an update text buffer. The text data stored temporarily in the update text buffer is registered in a plural-character occurrence file defining a text index in a character component file merge step. The data registered in the plural-character occurrence file is retrieved for query terms. The text data stored in the update text buffer is retrieved for the query terms. The document number of a document updated or deleted is deleted from the result of retrieval in the plural-character occurrence file. Also, the result or the document number obtained in the, update text buffer is added to the result of retrieval to provide a final retrieval result.
摘要翻译：提供了一种能够提高事务处理性能的文本数据注册和检索方法。更新的文件编号列表中登记了已经新请求删除或替换的文档的文档编号。已经新请求插入或替换的文档的文本数据被登记在更新文本缓冲器中。临时存储在更新文本缓冲器中的文本数据被登记在字符组件文件合并步骤中定义文本索引的多字符出现文件中。针对查询条件检索登记在多个字符出现文件中的数据。检索存储在更新文本缓冲区中的文本数据用于查询条件。更新或删除的文档的文档号从多字符出现文件中的检索结果中删除。此外，将更新文本缓冲器中获得的结果或文档编号添加到检索结果中以提供最终检索结果。

2. 发明授权

US06473754B1 METHOD AND SYSTEM FOR EXTRACTING CHARACTERISTIC STRING, METHOD AND SYSTEM FOR SEARCHING FOR RELEVANT DOCUMENT USING THE SAME, STORAGE MEDIUM FOR STORING CHARACTERISTIC STRING EXTRACTION PROGRAM, AND STORAGE MEDIUM FOR STORING RELEVANT DOCUMENT SEARCHING PROGRAM 有权
标题翻译：用于提取特征字符串的方法和系统，用于搜索相关文档的方法和系统，用于存储特征字符串提取程序的存储媒体和存储相关文档搜索程序的存储介质
公开(公告)号：US06473754B1
公开(公告)日：2002-10-29
申请号：US09320558
申请日：1999-05-27
申请人： Tadataka Matsubayashi , Katsumi Tada , Takuya Okamoto , Natsuko Sugaya , Yasushi Kawashimo
发明人： Tadataka Matsubayashi , Katsumi Tada , Takuya Okamoto , Natsuko Sugaya , Yasushi Kawashimo
IPC分类号： G06F1730
CPC分类号： G06F17/3061 , Y10S707/99933 , Y10S707/99935 , Y10S707/99945
摘要： A method for extracting features in contents of a document without using a word dictionary and a system using the method for accurately searching for a relevant document or documents at high speed. The method includes steps of storing character strings present in a text in a text database and possibilities appearing at boundaries of words in the text in the form of an occurrence probability file, storing occurrence frequencies of the character strings in the text as an occurrence frequency file, extracting characteristic strings from a text spcified by a user with use of the occurrence probability file, and counting occurrence frequencies thereof in the user-specified text. The method calculates similarities to the user-specified text with use of the occurrence frequency file and the occurrence frequencies in the user-specified text.
摘要翻译：一种用于在不使用单词字典的情况下提取文档的内容中的特征的方法，以及使用用于以高速准确地搜索相关文档或文档的方法的系统。该方法包括以文本数据库中存在的文本中存储的字符串和出现在文本中的单词的边界处的出现概率文件形式的可能性，将文本中的字符串的出现频率存储为出现频率文件从使用发生概率文件的用户提取的文本中提取特征字符串，并对用户指定的文本中的发生频率进行计数。该方法使用发生频率文件和用户指定的文本中的出现频率来计算与用户指定的文本的相似度。

3. 发明授权

US06496820B1 Method and search method for structured documents 失效
标题翻译：结构化文件的方法和搜索方法
公开(公告)号：US06496820B1
公开(公告)日：2002-12-17
申请号：US09300594
申请日：1999-04-28
申请人： Katsumi Tada , Natsuko Sugaya , Tadataka Matsubayashi , Takuya Okamoto , Yasushi Kawashimo
发明人： Katsumi Tada , Natsuko Sugaya , Tadataka Matsubayashi , Takuya Okamoto , Yasushi Kawashimo
IPC分类号： G06F1730
CPC分类号： G06F17/3061 , Y10S707/99931 , Y10S707/99932 , Y10S707/99933 , Y10S707/99935
摘要： A registration method for structured documents includes the steps of: preparing correspondence data between a string and a string occurrence position within a structured document for each structured document, and additionally storing the correspondence data in an occurrence frequency extracting index; and preparing a list of a character, an element containing the character and a length of the element and additionally storing the list in an element length index. A search method for structured documents includes the steps of: inputting search conditions including a search term and an element for specifying a search range; decomposing the search term into a plurality of substrings, obtaining an occurrence frequency and an occurrence position of the search term using the plurality of substrings from the occurrence frequency extracting index; selecting a character from the search term, obtaining an element containing the character using the character from the element length index, and further extracting a length of the element within the search range; calculating a matching degree for the search conditions from the occurrence frequency and the occurrence position of the search term and the length of the element within the search range; and outputting the element containing the search term and the matching degree.
摘要翻译：结构化文档的注册方法包括以下步骤：为每个结构化文档准备在结构化文档内的字符串和字符串发生位置之间的对应数据，并且将对应数据另外存储在发生频率提取索引中; 以及准备字符的列表，包含该元素的字符和长度的元素，并另外将该列表存储在元素长度索引中。用于结构化文档的搜索方法包括以下步骤：输入包括搜索项和用于指定搜索范围的元素的搜索条件; 将搜索项分解为多个子串，使用来自发生频率提取索引的多个子串来获得搜索项的出现频率和出现位置; 从所述搜索项中选择一个字符，从所述元素长度索引获得包含所述字符的元素，并进一步提取所述元素在所述搜索范围内的长度; 根据搜索项的出现频率和出现位置以及搜索范围内的元素的长度来计算搜索条件的匹配度; 并输出包含搜索项和匹配度的元素。

4. 发明授权

US06826567B2 Registration method and search method for structured documents 失效
标题翻译：结构化文件的注册方法和搜索方法
公开(公告)号：US06826567B2
公开(公告)日：2004-11-30
申请号：US10218495
申请日：2002-08-15
申请人： Katsumi Tada , Natsuko Sugaya , Tadataka Matsubayashi , Takuya Okamoto , Yasushi Kawashimo
发明人： Katsumi Tada , Natsuko Sugaya , Tadataka Matsubayashi , Takuya Okamoto , Yasushi Kawashimo
IPC分类号： G06F1730
CPC分类号： G06F17/3061 , Y10S707/99931 , Y10S707/99932 , Y10S707/99933 , Y10S707/99935
摘要： A registration/search method for structured documents where correspondence data is prepared between a fixed-length-string and a string occurrence position within a structured document for all fixed-length-strings in the document and for each structured document. A list of a character and all hierarchical elements containing the character and element lengths is prepared. An occurrence frequency and an occurrence position of a search term is obtained using the plurality of fixed-length-substrings and the occurrence frequency extracting index. A search character is selected from the search term. A hierarchical element containing the search character is obtained using the character from the element length index. A length of the element corresponding to a search range is extracted using the obtained occurrence position. A matching degree for the search term is calculated from the obtained occurrence frequency of the search term and the extracted element length of the element corresponding to the search range.
摘要翻译：一种结构化文档的注册/搜索方法，其中在文档和每个结构化文档中的所有固定长度字符串的结构化文档中的固定长度字符串和字符串发生位置之间准备对应数据。准备了包含字符和元素长度的字符和所有分层元素的列表。使用多个固定长度子串和出现频率提取索引来获得搜索项的出现频率和出现位置。从搜索项中选择搜索字符。使用元素长度索引中的字符获得包含搜索字符的分层元素。使用所获得的发生位置提取与搜索范围对应的元素的长度。从搜索项的获得的出现频率和与搜索范围对应的元素的提取的元素长度计算搜索项的匹配度。

5. 发明授权

US07039636B2 Document retrieval method and document retrieval system 有权
公开(公告)号：US07039636B2
公开(公告)日：2006-05-02
申请号：US10456519
申请日：2003-06-09
申请人： Katsumi Tada , Takuya Okamoto , Natsuko Sugaya , Tadataka Matsubayashi , Yasuhiko Inaba , Yasushi Kawashimo
发明人： Katsumi Tada , Takuya Okamoto , Natsuko Sugaya , Tadataka Matsubayashi , Yasuhiko Inaba , Yasushi Kawashimo
IPC分类号： G06F17/30
CPC分类号： G06F17/30011 , Y10S707/99933 , Y10S707/99934
摘要： Word boundary identification operations such as morpheme analysis is performed on documents to be registered, and the top positions and the end positions of words are identified. Word boundary information is obtained based on these identification results. Search indexes are created for sub-strings of a predetermined length (n-grams) extracted from the document being registered. The search index includes document identification information as well as occurrence position information which indicates that the string is located at the n-th position from the beginning of the text data, and word boundary information for an n-gram in a document.

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