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    • 2. 发明授权
    • Normalized ranking of semantic query search results
    • 语义查询搜索结果的归一化排序
    • US09229930B2
    • 2016-01-05
    • US13595125
    • 2012-08-27
    • Seema SundaraMatthew Steven PerrySouripriya DasJagannathan Srinivasan
    • Seema SundaraMatthew Steven PerrySouripriya DasJagannathan Srinivasan
    • G06F17/30
    • G06F17/30G06F17/30731G06F17/30958
    • A method, system, and computer program product for normalized ranking of semantic query search results. The method commences by forming a SPARQL query, the SPARQL query specifying a collection of named RDF graphs, then executing the SPARQL query to retrieve matched documents selected from the collection of named RDF graphs. Having retrieved the matches, the method calculates an absolute normalized score for the matched document. The calculation of an absolute normalized score for a second matched document allows for relevance ranking. To enhance the relationship of the computer-calculated score to the relevance (and not solely to occurrence counts) embodiments consider the number of distinct variables selected in the SPARQL query, and also consider the total number of bindings to the aforementioned variables. For comparing from among possibly different sized documents, a further normalization component is implemented by considering the total number of triples found in the document's underlying subgraph.
    • 一种用于语义查询搜索结果的归一化排序的方法,系统和计算机程序产品。 该方法通过形成SPARQL查询,SPARQL查询指定一个命名RDF图的集合,然后执行SPARQL查询来检索从命名RDF图的集合中选择的匹配文档。 检索到匹配后,该方法计算匹配文档的绝对归一化分数。 对于第二匹配文档的绝对归一化分数的计算允许相关性排名。 为了增强计算机计算的分数与相关性(而不仅仅是出现次数)的关系,实施例考虑在SPARQL查询中选择的不同变量的数量,并且还考虑与上述变量的绑定的总数。 为了从可能不同大小的文档中进行比较,通过考虑文档底层子图中发现的三元组的总数来实现进一步的标准化组件。
    • 5. 发明申请
    • Access control for graph data
    • 图形数据访问控制
    • US20100268722A1
    • 2010-10-21
    • US12386560
    • 2009-04-20
    • Aravind YalamanchiJayanta BanerjeeSouripriya Das
    • Aravind YalamanchiJayanta BanerjeeSouripriya Das
    • G06F17/30
    • G06F17/30958
    • Systems, methods, and other embodiments associated with access control for graph data at the instance-level are described. One example method includes accepting data access constraints that are expressed as match and apply pattern pairs to enforce security policies. A user query on graph data with a security policy restricts the returned data to data that the user is authorized to access. For this purpose, a user query that includes query selection criteria corresponding to one or more match pattern criteria based on the resource referenced in the query is rewritten to include security conditions specified in the associated apply pattern to restrict access to the graph data.
    • 描述了与在实例级别的图形数据的访问控制相关联的系统,方法和其他实施例。 一个示例性方法包括接受表示为匹配的数据访问约束,并应用模式对以执行安全策略。 对具有安全策略的图形数据的用户查询将返回的数据限制为用户被授权访问的数据。 为此,重写包括基于查询中引用的资源的与一个或多个匹配模式标准相对应的查询选择标准的用户查询,以包括在相关联的应用模式中指定的安全条件以限制对图形数据的访问。
    • 6. 发明授权
    • Rewriting table functions as SQL strings
    • 重写表函数作为SQL字符串
    • US07680862B2
    • 2010-03-16
    • US11108242
    • 2005-04-18
    • Eugene Inseok ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • Eugene Inseok ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • G06F7/00
    • G06F17/30448
    • The TABLE function mechanism available in a RDBMS is used to integrate RDF models into SQL queries. The table function invocation takes parameters including an RDF pattern, an RDF model, and an RDF rule base and returns result rows to the SQL query that contain RDF triples resulting from the application of the pattern to the triples of the model and the triples inferred by applying the rule base to the model. The RDBMS includes relational representations of the triples and the rules. Optimizations include indexes and materialized views of the representations of the triples, precomputed inferred triples, and a method associated with the TABLE function that rewrites the part of the SQL query that contains the TABLE function invocation as an equivalent SQL string. The latter technique is generally applicable to TABLE functions.
    • RDBMS中可用的TABLE函数机制用于将RDF模型集成到SQL查询中。 表函数调用采用包括RDF模式,RDF模型和RDF规则库的参数,并将结果行返回给包含由模式应用到模型三元组的RDF三元组的SQL查询,以及三维模型推断出的三元组 将规则库应用于模型。 RDBMS包括三元组和规则的关系表示。 优化包括三元组表示的索引和物化视图,预先计算的推断三元组,以及与TABLE函数相关联的方法,将包含TABLE函数调用的SQL查询的一部分重写为等效的SQL字符串。 后一种技术通常适用于TABLE函数。
    • 8. 发明授权
    • Integrating RDF data into a relational database system
    • 将RDF数据集成到关系数据库系统中
    • US08719250B2
    • 2014-05-06
    • US11108204
    • 2005-04-18
    • Eugene Inseok ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • Eugene Inseok ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • G06F7/00G06F17/30
    • G06F17/30557G06F17/30477
    • The TABLE function mechanism available in a RDBMS is used to integrate RDF models into SQL queries. The table function invocation takes parameters including an RDF pattern, an RDF model, and an RDF rule base and returns result rows to the SQL query that contain RDF triples resulting from the application of the pattern to the triples of the model and the triples inferred by applying the rule base to the model. The RDBMS includes relational representations of the triples and the rules. Optimizations include indexes and materialized views of the representations of the triples, precomputed inferred triples, and a method associated with the TABLE function that rewrites the part of the SQL query that contains the TABLE function invocation as an equivalent SQL string. The latter technique is generally applicable to TABLE functions.
    • RDBMS中可用的TABLE函数机制用于将RDF模型集成到SQL查询中。 表函数调用采用包括RDF模式,RDF模型和RDF规则库的参数,并将结果行返回给包含由模式应用到模型三元组的RDF三元组的SQL查询,以及三维模型推断出的三元组 将规则库应用于模型。 RDBMS包括三元组和规则的关系表示。 优化包括三元组表示的索引和物化视图,预先计算的推断三元组,以及与TABLE函数相关联的方法,将包含TABLE函数调用的SQL查询的一部分重写为等效的SQL字符串。 后一种技术通常适用于TABLE函数。