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    • 42. 发明授权
    • Integrity assurance of query result from database service provider
    • 数据库服务提供商的查询结果的完整性保证
    • US07870398B2
    • 2011-01-11
    • US11626847
    • 2007-01-25
    • Chang-shing PerngHaixun WangJian YinPhilip S. Yu
    • Chang-shing PerngHaixun WangJian YinPhilip S. Yu
    • G06F12/14G06F7/00
    • G06F21/64G06F17/30286G06F21/6245G06F2221/2115
    • A method, system and computer program product for confirming the validity of data returned from a data store. A data store contains a primary data set encrypted using a first encryption and a secondary data set using a second encryption. The secondary data set is a subset of the primary data set. A client issues a substantive query against the data store to retrieve a primary data result belonging to the primary data set. A query interface issues at least one validating query against the data store. Each validating query returns a secondary data result belonging to the secondary data set. The query interface receives the secondary data result and provides a data invalid notification if data satisfying the substantive query included in an unencrypted form of the secondary data result is not contained in an unencrypted form of the primary data result.
    • 一种用于确认从数据存储返回的数据的有效性的方法,系统和计算机程序产品。 数据存储包含使用第一加密加密的主数据集和使用第二加密的辅数据集。 辅助数据集是主数据集的子集。 客户端对数据存储器发出实质性查询以检索属于主数据集的主数据结果。 查询界面对数据存储区发出至少一个验证查询。 每个验证查询返回属于辅助数据集的辅助数据结果。 如果满足辅助数据结果的未加密形式的实质性查询的数据未包含在主数据结果的未加密形式中,则查询接口接收辅助数据结果并提供数据无效通知。
    • 46. 发明申请
    • SYSTEM AND METHOD FOR LOAD SHEDDING IN DATA MINING AND KNOWLEDGE DISCOVERY FROM STREAM DATA
    • 用于数据挖掘中的负载分解和来自流数据的知识发现的系统和方法
    • US20090187914A1
    • 2009-07-23
    • US12372568
    • 2009-02-17
    • Yun ChiHaixun WangPhilip S. Yu
    • Yun ChiHaixun WangPhilip S. Yu
    • G06F9/46G06N5/02
    • G06K9/6297H04L43/028
    • Load shedding schemes for mining data streams. A scoring function is used to rank the importance of stream elements, and those elements with high importance are investigated. In the context of not knowing the exact feature values of a data stream, the use of a Markov model is proposed herein for predicting the feature distribution of a data stream. Based on the predicted feature distribution, one can make classification decisions to maximize the expected benefits. In addition, there is proposed herein the employment of a quality of decision (QoD) metric to measure the level of uncertainty in decisions and to guide load shedding. A load shedding scheme such as presented herein assigns available resources to multiple data streams to maximize the quality of classification decisions. Furthermore, such a load shedding scheme is able to learn and adapt to changing data characteristics in the data streams.
    • 挖掘数据流的加载脱落方案。 使用评分函数对流元素的重要性进行排序,并调查那些具有重要意义的元素。 在不知道数据流的精确特征值的上下文中,本文提出了使用马尔可夫模型来预测数据流的特征分布。 基于预测的特征分布,可以进行分类决定,以最大限度地提高预期效益。 此外,在此提出采用质量决策(QoD)度量来衡量决策中的不确定性水平并指导负荷脱落。 诸如此处呈现的负载脱落方案将可用资源分配给多个数据流以最大化分类决定的质量。 此外,这种负载脱落方案能够学习和适应数据流中不断变化的数据特性。
    • 47. 发明授权
    • Space and time efficient XML graph labeling
    • 空间和时间有效的XML图形标注
    • US07492727B2
    • 2009-02-17
    • US11396502
    • 2006-03-31
    • Philip S. YuHaixun WangHao He
    • Philip S. YuHaixun WangHao He
    • H04L12/28
    • H04L45/48H04L45/02
    • There is provided a method for determining reachability between any two nodes within a graph. The inventive method utilizes a dual-labeling scheme. Initially, a spanning tree is defined for a group of nodes within a graph. Each node in the spanning tree is assigned a unique interval-based label, that describes its dependency from an ancestor node. Non-tree labels are then assigned to each node in the spanning tree that is connected to another node in the spanning tree by a non-tree link. From these labels, reachability of any two nodes in the spanning tree is determined by using only the interval-based labels and the non-tree labels.
    • 提供了一种用于确定图中任何两个节点之间的可达性的方法。 本发明的方法利用双标记方案。 最初,为图中的一组节点定义了生成树。 生成树中的每个节点都被分配一个唯一的基于间隔的标签,它描述了从祖先节点的依赖关系。 然后,非树标签被分配给生成树中通过非树形链接连接到生成树中的另一个节点的每个节点。 从这些标签中,生成树中任何两个节点的可达性通过仅使用基于间隔的标签和非树标签来确定。
    • 48. 发明申请
    • SYSTEM AND METHOD FOR INDEXING WEIGHTED-SEQUENCES IN LARGE DATABASES
    • 用于指数大数据库中的加权序列的系统和方法
    • US20090024618A1
    • 2009-01-22
    • US12198717
    • 2008-08-26
    • WEI FANCHANG-SHING PERNGHAIXUN WANGPHILIP SHI-LUNG YU
    • WEI FANCHANG-SHING PERNGHAIXUN WANGPHILIP SHI-LUNG YU
    • G06F7/06G06F17/30
    • G06F17/30327G06F17/30548Y10S707/99943
    • The present invention provides an index structure for managing weighted-sequences in large databases. A weighted-sequence is defined as a two-dimensional structure in which each element in the sequence is associated with a weight. A series of network events, for instance, is a weighted-sequence because each event is associated with a timestamp. Querying a large sequence database by events' occurrence patterns is a first step towards understanding the temporal causal relationships among the events. The index structure proposed herein enables the efficient retrieval from the database of all subsequences (contiguous and non-contiguous) that match a given query sequence both by events and by weights. The index structure also takes into consideration the nonuniform frequency distribution of events in the sequence data.
    • 本发明提供了一种用于在大数据库中管理加权序列的索引结构。 加权序列被定义为二维结构,其中序列中的每个元素与权重相关联。 例如,一系列网络事件是加权序列,因为每个事件都与时间戳相关联。 通过事件发生模式查询大序列数据库是了解事件之间的时间因果关系的第一步。 这里提出的索引结构使得能够通过事件和权重从数据库有效地检索与给定查询序列匹配的所有子序列(连续的和不连续的)。 索引结构还考虑了序列数据中事件的不均匀频率分布。
    • 49. 发明申请
    • METHOD AND SYSTEM FOR COMBINING RANKING AND CLUSTERING IN A DATABASE MANAGEMENT SYSTEM
    • 在数据库管理系统中组合排序和聚类的方法和系统
    • US20080270374A1
    • 2008-10-30
    • US11740090
    • 2007-04-25
    • Chengkai LiLipyeow LimHaixun WangMin Wang
    • Chengkai LiLipyeow LimHaixun WangMin Wang
    • G06F17/30
    • G06F16/24558
    • A system for combining ranking and clustering in a query. Bit vectors are intersected on Boolean attributes resulting in a vector. Two summary grids are constructed by intersecting bit vectors on clustering and ranking attributes. The vector is intersected with each summary grid to obtain a filtered clustering and ranking grid. An algorithm is applied on the clustering grid to obtain clusters. Vectors associated with buckets in the clusters are intersected resulting in one vector for each cluster. The vector corresponding to each cluster is intersected with the ranking grid to obtain a modified grid. Buckets are pruned according to bounds of each bucket in the modified grid and a predetermined number to obtain candidate buckets containing the predetermined number of data. The data are retrieved and a ranking score is calculated. The top predetermined number of data are sorted according to ranking scores and a result is returned.
    • 用于在查询中组合排名和聚类的系统。 位向量在布尔属性上相交,导致一个向量。 通过在聚类和排名属性上相交位向量来构建两个概要网格。 向量与每个摘要网格相交,以获得过滤的聚类和排序网格。 在聚类网格上应用一种算法来获得聚类。 与群集中的桶相关联的向量相交,导致每个簇的一个向量。 对应于每个簇的向量与排名网格相交,以获得修改的网格。 根据修改的网格中的每个桶的边界和预定数量来修剪桶,以获得包含预定数量的数据的候选桶。 检索数据并计算排名分数。 最高预定数量的数据根据​​排名得分排序并返回结果。