共查询到17条相似文献，搜索用时 62 毫秒
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介绍了词法分析器的概念,并指出词法分析器设计时,输入的源程序以文件的形式存储在外部.主控程序通过打开文件调用待分析的源程度. 相似文献
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源代码审核是指在编码阶段发现和修正软件源代码中存在的安全漏洞,词法分析是源代码审核中的一项重要技术.详细分析了词法分析的实现过程,完善了危险函数数据库,优化了特征分析方法,特别是将贝叶斯理论成功运用于词法分析,并成功开发出一个词法分析工具SSCAN.测试结果表明,SSCAN比主流词法分析软件Flawfinder和Rats具有更高的完整性和准确性. 相似文献
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指出叙词法与本体都是信息组织的方法,分别介绍两者的概念、特点及其在信息组织中的应用,比较了叙词法与本体的相同点与不同点,阐述了叙词法与本体的最新研究进展. 相似文献
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动态词法是现代编译器中的重要组成部分,本文阐述了现代编译器中词法分析的原理和实现方法,对在实现过程中遇到的问题进行分析,提出了自己的解决方法. 相似文献
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汉语自然语言检索中的词法分析处理 总被引：6，自引：0，他引：6
本文对自然语言检索中的词法分析处理进行了探讨。首先讨论了基于词法分析的自然语言检索处理的类型，如加权统计法、N元法、统计学习方法，然后讨论了词法分析的方法和过程，重点对语词切分、词性标注的方法，并分析了相关的过程，特别是对基于概率统计的方法进行了介绍。最后对词法分析中存在的问题进行了探讨。 相似文献
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法语和英语在词法方面有不少相似之处和不同之处,本文试着在词法方面将两种语言进行对比,从而有利于英语专业的学生尽快掌握法语词法。 相似文献
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科技俄语与其它语体的俄语不同,有着自己独特的词法特点.就这个问题,从词法范畴和词的形式的特点、语法意义的特点两个方面进行初步的探讨. 相似文献
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The lexical problems in large information systems are created by the necessity of handling a great number of names and their interrelations. Such lexical problems are not covered completely by the concept of data dictionaries, which are mostly concerned with database schema design rather than the execution of operations. In this paper we introduce our view of a lexical subsystem as a separate component in an information system architecture, to deal with linguistic and control functions concerning the lexical problems in local and network environments. The lexical subsystem is a special efficiently organized program package, which plays the role of a “linguistic filter” in a broad sense for lexically incorrect queries, promotes integration of databases and information retrieval systems, and facilitates the creation of local information systems. We hope that lexical subsystems can become productive for any large, especially distributed, information system. 相似文献
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本文通过英语语篇中词汇衔接关系的分析,指出词汇衔接主要是建立在语义联系基础上,并明确了词汇衔接的作用,有助于正确辨认和运用英语语篇中的词汇衔接手段,提高语篇分析能力。 相似文献
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The power-law regularities have been discovered behind many complex natural and social phenomenons. We discover that the power-law regularities, especially the Zipf’s and Heaps’ laws, also exist in large-scale software systems. We find that the distribution of lexical tokens in modern Java, C++ and C programs follows Zipf–Mandelbrot law, and the growth of program vocabulary follows Heaps’ law. The results are obtained through empirical analysis of real-world software systems. We believe our discovery reveals the statistical regularities behind computer programming. 相似文献
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在线词汇资源FrameNet的语义类型对于深层次的自然语言理解具有重要的作用。文章首先对FrameNet的语义类型功能进行论述,指出其由框架类型、本体类型和词汇类型构成,从概念、感情、搭配等层面描述词汇固有的词类特征和语义特征。在此基础上,作者探讨语义类型在自然语言处理中的具体应用范围:如限制框架元素的取值范围,进行问答、文摘、复述和翻译等自然语言理解,便于概念检索中关系相关度的计算,实现语义层面的推理,建立与其他本体在多领域中的映射等。 相似文献
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面向核心依存分析,运用规则和统计相结合的方法,在指定谓词的前提下,识别该谓词所支配的介词短语。首先,根据介词和介词短语右边界的规律抽取搭配模板,从训练语料中自动提取搭配关系,并用这些搭配关系在一定的搭配策略下对介词短语进行识别。然后,用基于词性的边界选择模型和规则方法相结合的技术对其它介词短语进行识别。 相似文献
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《Information processing & management》2016,52(1):99-114
Extracting opinions and emotions from text is becoming increasingly important, especially since the advent of micro-blogging and social networking. Opinion mining is particularly popular and now gathers many public services, datasets and lexical resources. Unfortunately, there are few available lexical and semantic resources for emotion recognition that could foster the development of new emotion aware services and applications. The diversity of theories of emotion and the absence of a common vocabulary are two of the main barriers to the development of such resources. This situation motivated the creation of Onyx, a semantic vocabulary of emotions with a focus on lexical resources and emotion analysis services. It follows a linguistic Linked Data approach, it is aligned with the Provenance Ontology, and it has been integrated with the Lexicon Model for Ontologies (lemon), a popular RDF model for representing lexical entries. This approach also means a new and interesting way to work with different theories of emotion. As part of this work, Onyx has been aligned with EmotionML and WordNet-Affect. 相似文献
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二语词义的习得很大程度上依靠和借助母语的词义系统。本文用心理词典理论、词汇语义学的相关理论从义项的角度,探讨义项对应空缺造成的母语干扰以及汉语对掌握缅语词汇聚合和组合关系的负面影响。探讨的过程是从汉族学习者所出现的错误出发,采用对比分析的方式进行。 相似文献