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    • 1. 发明授权
    • Method of determining whether a document tree is weakly valid
    • 确定文档树是否弱有效的方法
    • US5557720A
    • 1996-09-17
    • US303286
    • 1994-09-08
    • Allen L. Brown, Jr.Sidney W. Marshall
    • Allen L. Brown, Jr.Sidney W. Marshall
    • G06F17/21G06F17/22G06F17/24G06F17/27G06F7/28
    • G06F17/27G06F17/218G06F17/2247G06F17/24G06F17/2725
    • Some document languages such as the Standard Generalized Markup Language (SGML) represent documents as trees with each node of the tree labelled with a tag and each node's immediate descendants taken in order having tags that satisfy a production corresponding to the parent's tag. Thus, a document is represented as a complete parse tree satisfying the production rules of a grammar. To simplify maintaining a valid document/parse tree at all stages, an efficient check is made whether a document is valid or can be extended to a valid document and furthermore to show how a document could be changed to be valid. A document can be extended to a valid document if is equal to a valid document with possibly some nodes deleted. External (leaf) nodes can just be deleted. Internal nodes are deleted by replacing the arc from the parent with multiple arcs (in the same order) from the parent to each of the children of the deleted node. A grammar is constructed from the given grammar that includes those documents that can be completed to a valid document and is called a gapped grammar. A method is provided to teach how a gapped grammar can be constructed from a grammar, a parser/checker is efficiently implemented.
    • 标准通用标记语言(SGML)等标准通用标记语言(SGML)中的一些文档语言将文档作为树,将树的每个节点标记为标签,并且每个节点的直接后代按照满足与父标签相对应的生产的标签。 因此,文档被表示为满足语法生产规则的完整解析树。 为了简化在所有阶段维护有效的文档/解析树,可以有效地检查文档是有效的还是可以扩展到有效的文档,还可以显示文档如何被更改为有效。 如果文档等于有效的文档,可能会删除某些节点,则文档可以扩展到有效的文档。 外部(叶)节点可以被删除。 通过从父对象到已删除节点的每个子节点的多个弧(以相同的顺序)替换父元素的弧来删除内部节点。 语法是从给定的语法构建的,其中包括可以完成有效文档的文档,并称之为空格语法。 提供了一种方法来教导如何从语法构建空格语法,有效地实现解析器/检查器。
    • 4. 发明授权
    • Lock-free state merging in parallelized constraint satisfaction problem solvers
    • 并行约束满足问题解决者的无锁状态合并
    • US07543266B2
    • 2009-06-02
    • US11602092
    • 2006-11-20
    • Allen L. Brown, Jr.
    • Allen L. Brown, Jr.
    • G06F17/50
    • G06F8/314G06F8/3135G06F9/5061
    • Solver state merging in parallel constraint satisfaction problem (CSP) solvers. Solver state during processing of a computational thread of parallel CSP solvers is represented as a set of support graphs. The support graphs are merged in a pairwise fashion, yielding a new conflict-free graph. The merge process is free of cycles, conflicts are removed, and thread processing is lock-free. The architecture can be applied, generally, in any CSP solver (e.g., a Boolean SAT solver) having certain formal properties. A system is provided that facilitates solver processing, the system comprising a bookkeeping component for representing input solver state of a computational thread as a set of graphs, and a merge component for pairwise merging of at least two input graphs of the set of graphs into a merged graph that represents final state of the computational thread.
    • 并行约束满足问题(CSP)求解器的求解器状态合并。 在处理并行CSP求解器的计算线程期间的解算器状态被表示为一组支持图。 支持图以成对方式合并,产生新的无冲突图。 合并过程没有循环,冲突被删除,并且线程处理是无锁的。 通常,该架构可以应用于具有某些形式特性的任何CSP求解器(例如,布尔SAT求解器)中。 提供了一种有助于解算器处理的系统,该系统包括用于将计算线程的输入解算器状态表示为一组图形的记帐组件,以及用于将该组图形的至少两个输入图形成对合并为 表示计算线程的最终状态的合并图。
    • 5. 发明授权
    • Method and apparatus for specifying layout processing of structured
documents
    • 用于指定结构化文档的布局处理的方法和装置
    • US5438512A
    • 1995-08-01
    • US139686
    • 1993-10-22
    • Suryanarayana M. ManthaAllen L. Brown, Jr.Toshiro Wakayama
    • Suryanarayana M. ManthaAllen L. Brown, Jr.Toshiro Wakayama
    • G06K9/20G06F17/21G06F17/22G06F17/27G06F17/28G06G7/60
    • G06F17/22G06F17/211G06F17/2247G06F17/271G06F17/2775
    • A method and apparatus are provided for specifying layout processing of logically structured documents, that is, specific logical structures, in computer document handling systems. The method and apparatus allow the specification of the generic logical structure of the structured document in terms of relational attribute grammars. According to the invention, these relational attributes have a binary relationship. The generic layout structure for a class of structural documents is also represented in terms of relational attribute grammars. Coordination grammars, also represented in terms of relational attribute grammars, link the elements of the generic logical structure to the generic layout structure. By coordinating the generic layout and generic logical structures, many solutions are available. Preferential specifications are developed to resolve any potential ambiguities between the many solutions, and to select a preferred solution. The specific logical structure is then generated into a specific layout structure using the preferential specifications to resolve any ambiguities occurring as a result of the coordination.
    • 提供了一种用于指定逻辑结构化文档(即,计算机文档处理系统中的特定逻辑结构)的布局处理的方法和装置。 该方法和装置允许根据关系属性语法来指定结构化文档的通用逻辑结构。 根据本发明,这些关系属性具有二进制关系。 一类结构性文档的通用布局结构也用关系属性语法表示。 协调语法也用关系属性语法表示,将通用逻辑结构的元素链接到通用布局结构。 通过协调通用布局和通用逻辑结构,可以使用许多解决方案。 开发优先规范以解决许多解决方案之间的任何潜在歧义,并选择首选解决方案。 然后,使用优选规范将特定逻辑结构生成为特定的布局结构,以解决由于协调而发生的任何歧义。