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1. 发明授权

US10210281B2 Method and system for obtaining knowledge point implicit relationship 有权
公开(公告)号：US10210281B2
公开(公告)日：2019-02-19
申请号：US15025478
申请日：2013-12-06
申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. , FOUNDER APABI TECHNOLOGY LIMITED , PEKING UNIVERSITY
发明人： Mao Ye , Wei Wan , Jianbo Xu , Zhi Tang , Lifeng Jin
IPC分类号： G06F17/30 , G06N5/00
摘要： A method and system for obtaining a knowledge point implicit relationship are provided; first, establishing a knowledge point explicit relationship map according to knowledge point explicit relationship strengths; second, computing according to said knowledge point explicit relationship map a simple path set of two knowledge points; then, computing the implicit relationship strength values corresponding to each simple path in said simple path set; further, comparing the relationship strength values of the simple paths and setting as the significant implicit relationship strength value the simple path relationship strength having the largest value also greater than a preset threshold value. The described solution effectively avoids the problems of only using the relationship strengths between knowledge points and the ratio of relationship strengths to obtain the implicit relationship of knowledge points, the manner of searching for an implicit relationship being insufficiently accurate, and not performing normalization processing on the relationship strengths.

2. 发明申请

US20160232211A1 KEYWORD EXPANSION METHOD AND SYSTEM, AND CLASSIFIED CORPUS ANNOTATION METHOD AND SYSTEM 审中-公开
标题翻译：关键词扩展方法和系统，以及分类的公司注册方法和系统
公开(公告)号：US20160232211A1
公开(公告)日：2016-08-11
申请号：US15025573
申请日：2013-12-05
申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. , FOUNDER APABI TECHNOLOGY LIMITED , PEKING UNIVERSITY
发明人： Mao Ye , Zhi Tang , Jianbo Xu , Chao Lei , Lifeng Jin
IPC分类号： G06F17/30
CPC分类号： G06F16/24573 , G06F16/2455 , G06F16/3322 , G06F16/3338
摘要： A keyword expansion method and system are provided. The method comprises searching with a predetermined initial keyword to obtain current keywords used as a basis of a next search, performing loop search through keyword iteration. If a keyword error between keywords obtained in the current search and those keywords obtained in a previous search is less than a predetermined threshold, using the keywords obtained in the current search as expanded keywords of the initial keyword. With this method, the problem of manually establishing a thesaurus in the prior art may be solved. A method and system of automatically annotating a classified corpus is also provided. The method comprises: determining one or more initial core keywords for each class; obtaining expanded keywords for each class through expanding the initial core keywords; searching with the expanded keywords corresponding to a class to select a classified corpus and annotating the classified corpus.
摘要翻译：提供关键字扩展方法和系统。该方法包括用预定的初始关键字搜索以获得当前关键字，用作下一次搜索的基础，通过关键词迭代执行循环搜索。如果在当前搜索中获得的关键字和在先前搜索中获得的关键字之间的关键字错误小于预定阈值，则使用当前搜索中获得的关键字作为初始关键字的扩展关键字。利用这种方法，可以解决现有技术中手工建立辞典的问题。还提供了一种自动注释分类语料库的方法和系统。该方法包括：确定每个类的一个或多个初始核心关键字; 通过扩展初始核心关键字获取每个类的扩展关键字; 搜索与类相对应的扩展关键字，以选择分类语料库并注释分类语料库。

3. 发明授权

US09569407B2 Apparatus and a method for logically processing a composite graph in a formatted document 有权
标题翻译：用于逻辑处理格式化文档中的复合图的装置和方法
公开(公告)号：US09569407B2
公开(公告)日：2017-02-14
申请号：US14095682
申请日：2013-12-03
申请人： Peking University Founder Group Co., Ltd. , Founder Apabi Technology Limited , Peking University
发明人： Canhui Xu , Zhi Tang , Xin Tao , Cao Shi
IPC分类号： G06F17/22 , G06F17/21 , G06F3/0484 , G06F17/27
CPC分类号： G06F17/212 , G06F3/0483 , G06F3/0484 , G06F17/2705 , G06K9/00463
摘要： The present invention provides an apparatus for logically processing a composite graph in a formatted document, the apparatus comprising: a composite graph block extraction unit, used to extract a composite graph block in the formatted document; a document parsing unit, used to parse the formatted document to obtain a text element contained therein; a cutline element extraction unit, used to extract a cutline element from the text element; a correlativity detection unit, used to detect correlativity between the composite graph block and the cutline element; a correlativity storage unit, used to store the detected correlativity. The present invention also provides a method for logically processing a composite graph in a formatted document. According to the technical scheme disclosed in the present invention, it is easily achieve layout understanding of the composite graph in a graph-text mixed layout of the formatted document, so as to avoid a logical error.
摘要翻译：本发明提供一种用于逻辑处理格式化文档中的复合图形的装置，该装置包括：复合图块块提取单元，用于提取格式化文档中的复合图块; 文档解析单元，用于解析格式化的文档以获得其中包含的文本元素; 切割元素提取单元，用于从文本元素提取切割元素; 相关性检测单元，用于检测复合图形块和切割线元素之间的相关性; 相关性存储单元，用于存储检测到的相关性。本发明还提供了一种在格式化文档中逻辑地处理复合图形的方法。根据本发明公开的技术方案，可以容易地在格式化文档的图形文本混合布局中实现组合图的布局理解，以避免逻辑错误。

4. 发明授权

US09268999B2 Table recognizing method and table recognizing system 有权
标题翻译：表识别方法和表识别系统
公开(公告)号：US09268999B2
公开(公告)日：2016-02-23
申请号：US14096532
申请日：2013-12-04
申请人： Peking University Founder Group Co., Ltd. , Founder Apabi Technology Limited
发明人： Canhui Xu , Zhi Tang , Jianbo Xu , Xin Tao
IPC分类号： G06K9/62 , G06K9/00
CPC分类号： G06K9/00449 , G06K9/00463
摘要： Provided is a table recognizing method, comprising: parsing and analyzing metadata information in an original fixed-layout document, and extracting basic elements on a page of the document; segmenting the basic elements, extracting segmented text lines on the page, and acquiring fragments; constructing an undirected graph with respect to each of the fragments; extracting an image on the page, detecting intersection points of horizontal lines and vertical lines, detecting an external bounding box of the intersection points, and taking whether the segmented text lines fall within the external bounding box as local relationship features; training a learning model according to the local relationship features, local features of the fragments, and neighborhood relationship features among the fragments, acquiring model parameters, and establishing a table recognizing model; and invoking the table recognizing model to perform table recognizing for the document, and acquiring a recognizing result.
摘要翻译：提供了一种表识别方法，包括：解析和分析原始固定布局文档中的元数据信息，以及提取文档页面上的基本元素; 分割基本元素，在页面上提取分割的文本行，并获取片段; 构建关于每个片段的无向图; 提取页面上的图像，检测水平线和垂直线的交点，检测交点的外部边界框，以及分割的文本行是否落在外部边框内作为局部关系特征; 根据局部关系特征，片段的局部特征，片段间的邻域关系特征，获取模型参数，建立表识别模型，训练学习模型; 并调用表识别模型来执行文档的表识别，并获取识别结果。

5. 发明授权

US09727536B2 Logic processing apparatus and logic processing method for composite graphs in fixed layout document 有权
公开(公告)号：US09727536B2
公开(公告)日：2017-08-08
申请号：US14104245
申请日：2013-12-12
申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. , FOUNDER APABI TECHNOLOGY LIMITED , PEKING UNIVERSITY
发明人： Canhui Xu , Zhi Tang , Xin Tao , Cao Shi
IPC分类号： G06F17/00 , G06F17/21 , G06F3/0484 , G06F17/27
CPC分类号： G06F17/212 , G06F3/0483 , G06F3/0484 , G06F17/2705 , G06K9/00463
摘要： A logic process apparatus for composite graphs in a fixed layout document is provided in this invention. The apparatus includes a composite graph block extraction unit, for extracting composite graph blocks from the fixed layout document, a document parsing unit, for parsing the fixed layout document to obtain text primitives contained therein, a legend primitive extraction unit, for extracting legend primitives from the text primitives, a correlation detection unit, for detecting correlations between the composite graph blocks and the legend primitives, and a correlation storage unit, for storing the detected correlations. A logic process method for composite graphs in a fixed layout document is also provided.

6. 发明申请

US20140337719A1 Apparatus And A Method For Logically Processing A Composite Graph In A Formatted Document 有权
标题翻译：用于逻辑处理格式化文档中的复合图形的装置和方法
公开(公告)号：US20140337719A1
公开(公告)日：2014-11-13
申请号：US14095682
申请日：2013-12-03
申请人： Peking University Founder Group Co., Ltd. , Peking University , Founder Apabi Technology Limited
发明人： Canhui Xu , Zhi Tang , Xin Tao , Cao Shi
IPC分类号： G06F3/0484 , G06F17/27
CPC分类号： G06F17/212 , G06F3/0483 , G06F3/0484 , G06F17/2705 , G06K9/00463
摘要： The present invention provides an apparatus for logically processing a composite graph in a formatted document, the apparatus comprising: a composite graph block extraction unit, used to extract a composite graph block in the formatted document; a document parsing unit, used to parse the formatted document to obtain a text element contained therein; a cutline element extraction unit, used to extract a cutline element from the text element; a correlativity detection unit, used to detect correlativity between the composite graph block and the cutline element; a correlativity storage unit, used to store the detected correlativity. The present invention also provides a method for logically processing a composite graph in a formatted document. According to the technical scheme disclosed in the present invention, it is easily achieve layout understanding of the composite graph in a graph-text mixed layout of the formatted document, so as to avoid a logical error.
摘要翻译：本发明提供一种用于逻辑处理格式化文档中的复合图形的装置，该装置包括：复合图块块提取单元，用于提取格式化文档中的复合图块; 文档解析单元，用于解析格式化的文档以获得其中包含的文本元素; 切割元素提取单元，用于从文本元素提取切割元素; 相关性检测单元，用于检测复合图形块和切割线元素之间的相关性; 相关性存储单元，用于存储检测到的相关性。本发明还提供了一种在格式化文档中逻辑地处理复合图形的方法。根据本发明公开的技术方案，可以容易地在格式化文档的图形文本混合布局中实现组合图的布局理解，以避免逻辑错误。

7. 发明授权

US10289623B2 Method and system for key knowledge point recommendation 有权
公开(公告)号：US10289623B2
公开(公告)日：2019-05-14
申请号：US15025448
申请日：2013-12-06
申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. , FOUNDER APABI TECHNOLOGY LIMITED , PEKING UNIVERSITY
发明人： Mao Ye , Jianbo Xu , Zhi Tang , Lifeng Jin , Yuanlong Wang
IPC分类号： G06F17/30 , G06F16/2457 , G06N5/00
摘要： A method and system for key knowledge point recommendation are provided, the method comprising calculating knowledge point relationship strengths of knowledge points in a set of knowledge points; calculating weights for knowledge points according to the knowledge point relationship strengths of knowledge points in the set of knowledge points, and storing the knowledge points and weights correspondingly; determining key knowledge points according to the weights of the knowledge points and recommending the key knowledge points to a user. With this solution, knowledge point relationship strengths are obtained through calculating knowledge point relationship strengths of knowledge points in a set of knowledge points; and recommendation is given to the user for learning knowledge according to knowledge point relationship strengths, so as to help the user to learn key knowledge points selectively in a more objective and effective manner, and avoid problems of information recommendation based on fuzzy logical information recommendation technology.

8. 发明授权

US10268758B2 Method and system of acquiring semantic information, keyword expansion and keyword search thereof 有权
公开(公告)号：US10268758B2
公开(公告)日：2019-04-23
申请号：US15025460
申请日：2013-12-06
申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. , FOUNDER APABI TECHNOLOGY LIMITED , PEKING UNIVERSITY
发明人： Mao Ye , Zhi Tang , Jianbo Xu , Lifeng Jin , Wei Wan
IPC分类号： G06F17/30 , G06F3/0484
摘要： The present invention provides a semantic information acquisition method and system, and corresponding keyword expansion and search methods and systems, comprising: searching for, then classifying an article; then, performing word segmentation according to the classified article to obtain the words in said category, and setting said category and words to serve as the semantic information of the keyword; also, a method and system using the semantic information acquisition method to expand a keyword, and a method and system using keyword expansion to perform a search. The described semantic information acquisition method effectively avoids the technical problems in the prior art of only being able to obtain semantic information of English vocabulary; and it also being impossible to classify semantic information based on category information. The invention is particularly suitable for searching using a keyword, searching a large number of texts, and organizing large amounts of related data and information.

9. 发明授权

US09542362B2 Apparatus and a method for logically processing a composite graph in a formatted document 有权
公开(公告)号：US09542362B2
公开(公告)日：2017-01-10
申请号：US14095682
申请日：2013-12-03
申请人： Peking University Founder Group Co., Ltd. , Founder Apabi Technology Limited , Peking University
发明人： Canhui Xu , Zhi Tang , Xin Tao , Cao Shi
IPC分类号： G06F17/22 , G06F17/21 , G06F3/0484 , G06F17/27
摘要： The present invention provides an apparatus for logically processing a composite graph in a formatted document, the apparatus comprising: a composite graph block extraction unit, used to extract a composite graph block in the formatted document; a document parsing unit, used to parse the formatted document to obtain a text element contained therein; a cutline element extraction unit, used to extract a cutline element from the text element; a correlativity detection unit, used to detect correlativity between the composite graph block and the cutline element; a correlativity storage unit, used to store the detected correlativity. The present invention also provides a method for logically processing a composite graph in a formatted document. According to the technical scheme disclosed in the present invention, it is easily achieve layout understanding of the composite graph in a graph-text mixed layout of the formatted document, so as to avoid a logical error.

10. 发明申请

US20140250535A1 APPARATUS FOR PREVENTING REPLAY ATTACK AND METHOD FOR PREVENTING REPLAY ATTACK 有权
标题翻译：防止重击攻击的装置和防止重击攻击的方法
公开(公告)号：US20140250535A1
公开(公告)日：2014-09-04
申请号：US14102686
申请日：2013-12-11
申请人： PEKING UNIVERSITY , FOUNDER APABI TECHNOLOGY LIMITED , PEKING UNIVERSITY FOUNDER GROUP CO., LTD.
发明人： Cheng QU , Yinyan Yu , Zhi Tang
IPC分类号： G06F21/10
CPC分类号： G06F21/10 , G06F21/64 , H04L63/0823
摘要： An apparatus for preventing replay attacks and a method for preventing replay attacks are provided in this invention, wherein the apparatus for preventing replay attacks comprises: an acquisition unit for, when a request for operating a digital content is received, acquiring current location information of a set of placeholder files; a determination unit for determining whether the current location information is consistent with recorded location information of the placeholder file; a protection unit for, when inconsistent as determined by the determination unit, wherein there is a correspondence between the digital content and the set of placeholder files.
摘要翻译：本发明提供了一种用于防止重播攻击的装置和防止重放攻击的方法，其中防止重放攻击的装置包括：获取单元，用于当接收到操作数字内容的请求时，获取当前位置信息一组占位符文件; 确定单元，用于确定当前位置信息是否与占位符文件的记录位置信息一致; 保护单元，用于当由确定单元确定不一致时，其中数字内容与占位符文件集之间存在对应关系。

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