To cope with the problem of emitter identification caused by the radar words＇ uncertainty of measured multi-function radar emitters, this paper proposes a new identification method based on stochastic syntax-directed...To cope with the problem of emitter identification caused by the radar words＇ uncertainty of measured multi-function radar emitters, this paper proposes a new identification method based on stochastic syntax-directed translation schema（SSDTS）. This method, which is deduced from the syntactic modeling of multi-function radars, considers the probabilities of radar phrases appearance in different radar modes as well as the probabilities of radar word errors occurrence in different radar phrases. It concludes that the proposed method can not only correct the defective radar words by using the stochastic translation schema, but also identify the real radar phrases and working modes of measured emitters concurrently. Furthermore, a number of simulations are presented to demonstrate the identification capability and adaptability of the SSDTS algorithm.The results show that even under the condition of the defective radar words distorted by noise,the proposed algorithm can infer the phrases, work modes and types of measured emitters correctly.展开更多
Relative clauses in traditional grammars,which are sometimes called attributive clauses,are divided into two types:restrictive and non-restrictive.Building upon the discussion of recursion in Halliday’s Systemic Func...Relative clauses in traditional grammars,which are sometimes called attributive clauses,are divided into two types:restrictive and non-restrictive.Building upon the discussion of recursion in Halliday’s Systemic Functional Grammar(SFG),this paper conducts a functional syntactic analysis of such clauses,aimed at probing into their logical structures.展开更多
根据传统语法和形式语法分析,英语中的try to do这类结构通常被认为是“动+宾”结构。本文以韩礼德的功能语法理论为基础,把这类结构看作是“从属型动词词组复合体”。文章首先从相互依赖情况角度讨论这类结构中两个成分之间的关系,并...根据传统语法和形式语法分析,英语中的try to do这类结构通常被认为是“动+宾”结构。本文以韩礼德的功能语法理论为基础,把这类结构看作是“从属型动词词组复合体”。文章首先从相互依赖情况角度讨论这类结构中两个成分之间的关系,并认为“扩展”型与“投射”型中的相互依赖关系是不相同的。接着文章讨论了“扩展”型复合体中次要成分所表示的几种意义。然后作者就“扩展”与“投射”的差异进行了探讨。最后通过实例分析比较了传统语法和功能语法在句法结构分析方面的差异,从而表明了功能句法分析的特点。展开更多
基金supported by the National Natural Science Foundation of China (No. 61002026)
文摘To cope with the problem of emitter identification caused by the radar words＇ uncertainty of measured multi-function radar emitters, this paper proposes a new identification method based on stochastic syntax-directed translation schema（SSDTS）. This method, which is deduced from the syntactic modeling of multi-function radars, considers the probabilities of radar phrases appearance in different radar modes as well as the probabilities of radar word errors occurrence in different radar phrases. It concludes that the proposed method can not only correct the defective radar words by using the stochastic translation schema, but also identify the real radar phrases and working modes of measured emitters concurrently. Furthermore, a number of simulations are presented to demonstrate the identification capability and adaptability of the SSDTS algorithm.The results show that even under the condition of the defective radar words distorted by noise,the proposed algorithm can infer the phrases, work modes and types of measured emitters correctly.
文摘Relative clauses in traditional grammars,which are sometimes called attributive clauses,are divided into two types:restrictive and non-restrictive.Building upon the discussion of recursion in Halliday’s Systemic Functional Grammar(SFG),this paper conducts a functional syntactic analysis of such clauses,aimed at probing into their logical structures.
文摘根据传统语法和形式语法分析,英语中的try to do这类结构通常被认为是“动+宾”结构。本文以韩礼德的功能语法理论为基础,把这类结构看作是“从属型动词词组复合体”。文章首先从相互依赖情况角度讨论这类结构中两个成分之间的关系,并认为“扩展”型与“投射”型中的相互依赖关系是不相同的。接着文章讨论了“扩展”型复合体中次要成分所表示的几种意义。然后作者就“扩展”与“投射”的差异进行了探讨。最后通过实例分析比较了传统语法和功能语法在句法结构分析方面的差异,从而表明了功能句法分析的特点。
