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    • 94. 发明授权
    • Method and apparatus for failure resilient forwarding of data over a computer network
    • 通过计算机网络对数据进行故障恢复转发的方法和装置
    • US07392319B2
    • 2008-06-24
    • US10830779
    • 2004-04-23
    • Zhen LiuSambit SahuJeremy I. Silber
    • Zhen LiuSambit SahuJeremy I. Silber
    • G06F15/16
    • H04L41/0654H04L45/00H04L67/2842H04L67/2852H04L69/16H04L69/163H04L69/165H04L69/40
    • In one embodiment, the present invention is a method and an apparatus for failure-resilient forwarding of data over a computer network. In one embodiment, a marker is introduced into the data stream, e.g., at the sending node, and allows, in turn, forwarding nodes and/or receivers to efficiently track data stream reception. The marker functions as a checkpoint for the data transport process, and is identified and indexed at each forwarding node and receiver. Each receiver saves the marker prior to delivering data to an application, thereby designating a point in the data stream at which all preceding data is confirmed to have been delivered to the application. Thus, if a forwarding node fails, the receiver may request stream data from an alternate forwarding node by specifying to the alternate forwarding node to provide data starting from the marker.
    • 在一个实施例中,本发明是用于在计算机网络上进行数据故障恢复转发的方法和装置。 在一个实施例中,将标记引入数据流,例如在发送节点处,并且允许转发节点和/或接收器以有效地跟踪数据流接收。 标记用作数据传输过程的检查点,并在每个转发节点和接收器处被识别和索引。 每个接收器在将数据传送到应用程序之前保存标记,从而指定数据流中的所有先前数据被确认已被递送到应用的点。 因此,如果转发节点发生故障,则接收方可以通过指定备用转发节点从标记开始提供数据来从备用转发节点请求流数据。
    • 97. 发明申请
    • Method for composition of stream processing plans
    • 流处理计划的组成方法
    • US20070250331A1
    • 2007-10-25
    • US11397983
    • 2006-04-05
    • Zhen LiuAnton Riabov
    • Zhen LiuAnton Riabov
    • G06Q10/00G05B19/418
    • G06Q30/00G06Q10/00
    • A computer implemented method, apparatus, and computer usable program code for performing automatic planning in a compositional system. Parameter substitution is performed in response to receiving a planning language input. Actions are preprocessed in response to performing parameter substitution. A backward search is performed for potential solutions in response to preprocessing actions. A domain description is used for performing parameter substitution, preprocessing, and performing a backward search. Actions within the domain description have one or more inputs and one or more outputs. The planning language input specifies at least one goal and at least one action. A description of an action includes at least one description of action preconditions and at least one description of action effects. The action preconditions include predicates that must hold on input streams connected to the action in a valid workflow.
    • 一种用于在组合系统中执行自动计划的计算机实现的方法,装置和计算机可用程序代码。 响应于接收到规划语言输入而执行参数替换。 响应于执行参数替换,操作被预处理。 针对预处理动作的潜在解决方案执行反向搜索。 域描述用于执行参数替换,预处理和执行向后搜索。 域描述中的动作具有一个或多个输入和一个或多个输出。 规划语言输入指定至少一个目标和至少一个动作。 对动作的描述包括对动作前提的至少一个描述和动作效果的至少一个描述。 动作前提条件包括必须保持连接到有效工作流中的动作的输入流的谓词。
    • 99. 发明申请
    • Optimizing XSLT based on input XML document structure description and translating XSLT into equivalent XQuery expressions
    • 基于输入XML文档结构描述优化XSLT,并将XSLT转换为等价的XQuery表达式
    • US20060242563A1
    • 2006-10-26
    • US11261684
    • 2005-10-28
    • Zhen LiuMuralidhar KrishnaprasadAnguel Novoselsky
    • Zhen LiuMuralidhar KrishnaprasadAnguel Novoselsky
    • G06F17/00G06F17/30
    • G06F17/227G06F17/2247
    • Transformation of a set of XML documents via an XSLT stylesheet is made more efficient by rewriting the stylesheet at compile-time, based on the structural description of the set of XML documents, into an optimized stylesheet containing fewer dynamic template-matching calls than the original stylesheet. This rewritten stylesheet can be further rewritten into a set of XQuery expressions. At compile-time, the particular transformation templates that are appropriate for transforming the particular nodes contained in the set of XML documents are determined, and XSLT calls to the templates are converted to calls to corresponding XQuery user-defined functions. Determination of the appropriate transformation templates may be based on the structural description of the input set of XML documents, such as an XML Schema or Document Type Definition. The data from each template is translated into corresponding XQuery constructors, instructions from the template are translated into XQuery expressions, and the XQuery functions are inlined if possible.
    • 通过XSLT样式表转换一组XML文档通过将编译时的样式表(基于XML文档集的结构描述)重写为优化样式表,使其具有比原始文本更少的动态模板匹配调用 样式表。 这个重写的样式表可以进一步重写成一组XQuery表达式。 在编译时,确定适合于转换XML文档集中的特定节点的特定转换模板,并将XSLT对模板的调用转换为对相应XQuery用户定义函数的调用。 确定适当的转换模板可以基于XML文档的输入集合的结构描述,例如XML模式或文档类型定义。 来自每个模板的数据被转换为相应的XQuery构造函数,模板中的指令将被转换为XQuery表达式,如果可能的话XQuery函数是内联的。