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    • 13. 发明申请
    • Rewriting table functions as SQL strings
    • 重写表函数作为SQL字符串
    • US20060235837A1
    • 2006-10-19
    • US11108242
    • 2005-04-18
    • Eugene ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • Eugene ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • G06F17/30
    • 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。
    • 15. 发明申请
    • Integrating RDF data into a relational database system
    • 将RDF数据集成到关系数据库系统中
    • US20060235823A1
    • 2006-10-19
    • US11108204
    • 2005-04-18
    • Eugene ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • Eugene ChongSouripriya DasGeorge EadonJagannathan Srinivasan
    • G06F17/30
    • 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。
    • 16. 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。
    • 20. 发明申请
    • Database management system with persistent, user-accessible bitmap values
    • 数据库管理系统具有持久的,用户可访问的位图值
    • US20050216518A1
    • 2005-09-29
    • US10810756
    • 2004-03-26
    • Ying HuTimothy ChormaSeema SundaraEugene ChongSouripriya DasJagannathan Srinivasan
    • Ying HuTimothy ChormaSeema SundaraEugene ChongSouripriya DasJagannathan Srinivasan
    • G06F17/30G06F17/00
    • G06F16/2237
    • A database management system that has bitmap values in which set bits in a representation of a bitstring specify a set of objects whose definitions are built into the database management system. The database management system further includes user-accessible operations on the bitmap values. The bitmap values are represented by means of a mapping specifier that specifies a range of the set of objects and a representation of a string of bits that has been mapped onto the set of object specified by the range specifier. The representation of the string of bits may be compressed. Bitmap operations on the values may alter the range specifier, the size of the string of bits, or individual bits in the string of bits. The objects represented by the bitmap values may be objects in the database management system or objects external thereto. An example of bitmap values of the first kind are bitmap values representing sets of rowids. rowid bitmap values may be used to make a user-defined index of attribute values for any set of objects contained in fields in the database management system. An example of bitmap values of the second kind are bitmap values representing sets of electronic product codes. ePC bitmap values may be used in any application where a compact representation of a set of ePC codes is desired.
    • 具有位图值的数据库管理系统,其中位列表示中的设置位指定其定义被内置到数据库管理系统中的一组对象。 数据库管理系统还包括对位图值的用户可访问操作。 位图值通过指定对象集合的范围的映射说明符和已经映射到范围说明符指定的对象集合的位串的表示来表示。 可以压缩比特串的表示。 对值的位图操作可以改变范围说明符,位串的大小或位串中的各个位。 由位图值表示的对象可以是数据库管理系统中的对象或其外部的对象。 第一类位图值的一个例子是表示一组rowid的位图值。 rowid位图值可用于为数据库管理系统中的字段中包含的任何对象集合创建用户定义的属性值索引。 第二种位图值的一个例子是表示电子产品代码集的位图值。 ePC位图值可以用于需要一组ePC代码的紧凑表示的任何应用中。