英汉数字习语的句法功能及其译法初探

数字习语因为其简明扼要、生动形象等特点,在英语和汉语中均占据一席之地。通过大量实例,分析归纳了英语和汉语数字习语的句法功能。并在此基础上,阐述了英汉数字习语互译的几种策略：字面译法、字面加注译法、借用法、归化译法以及释义译法。     

Application of Generative-Grammar Formalism to Analysis of Cognate Languages

Difficulties emerging in implementing compilers of several cognate languages within the framework of a unified software system are analyzed. The problem of design of cognate language compilers of efficient structure is formulated. Ways of solution of the problem of effective construction of cognate language compilers and organization of parsing of texts in an arbitrary language are proposed and their advantages are considered.     

基于面向对象XML的存储模式的设计与实现

通过扩展DTD和XML文档的解析建立面向对象的XML存储模式中的数据仓支持XML数据之间的继承关系和基于XML的面向对象的数据查询方式。文章阐述了解析器的系统设计与实现算法,并给出进一步的研究方向。     

基于语法功能匹配的汉语句法分析算法

以语法功能匹配作为句法分析的基本方法,以100万词清华973树库作为语法功能调查的主要资源,实现了一种基于语法功能匹配的句法分析算法。该算法能有效减少伪歧义,具有良好的分析效率,其分析结果包含了丰富而准确的语法信息。实验表明,短语正确率与召回率在封闭测试和开放测试中分别达到75.17%、73.69%和65.06%、56.55%。     

带有函数的表达式输入的技术处理

利用递归下降分析的方法，对带有函数的表达式输入进行处理，使得计算机能够识别数学表达式，并计算出输入的数学表达式的值。     

Learning classifier system for graph coloring

In this paper, the use of genetic algorithms and classifiers systems in the graph coloring application was considered. A crossover derivative was developed to accommodate the graph coloring specifications. Also, a method for verifying and validating the new offspring coloring rules and regulations was considered. Through a series of experiments conducted on randomly generated graphs of a relatively small size, the importance of various parameters and their impact to the overall system performance is demonstrated and discussed. In conclusion, suggestions for future study regarding this topic are proposed and briefly discussed.     

Elimination of single productions and merging nonterminal symbols of LR(1) grammars

Aho and Ullman give an algorithm in [1] for eliminating reductions of the form A → B, where A and B are nonterminals, from a set of LR(k) parsing tables, thus increasing the speed of the parser and reducing its size. We present a modification of their algorithm and show that after reductions by A → B have been eliminated, the symbols A and B can be equated and the associated columns of the parsing table merged, further reducing the size of the parser. The new set of tables parses according to an “abridged” grammar with fewer nonterminal symbols than the original. Finally, we give an algorithm which for certain LR(1) grammars constructs a set of LR(1) tables with no reductions by single productions, directly from the grammar.     

汉语句子语义极性分析和观点抽取方法的研究

利用自然语言处理技术，对中文网络评论语句进行语义极性分析和观点抽取。提出了计算词语上下文极性的算法，并且分析主题和修饰成分的匹配关系。最后与手工标注结果进行比较，通过实验证明了该算法的合理性和有效性。     

基于XML的数控仿真系统的NC代码解析

在直接通过NC代码来驱动仿真加工过程的数控仿真系统中,NC代码的解析处于系统的核心地位。然而各种NC代码之间的差异给系统的通用造成巨大的困难,系统各个模块的工作严格依赖于特定的NC代码格式,也使得系统难以扩展与变更。采用XML文档来作为用户提交的NC代码与系统之间的中间代码,很好地解决了以上问题,并获得了良好的应用效果,同时,对实现基于网络服务的数控仿真服务提供了可行性方案。