【摘要】 本文以跨语言检索为背景,主要介绍了机器翻译技术的应用和进展。文章介绍了跨语言检索中机器翻译技术的应用形式,简单回顾了机器翻译技术发展历史中出现的各种方法及其基本思想和优缺点,特别是近年来统计机器翻译的发展。本文通过一个实例较为详细地介绍了目前主流的基于短语的统计机器翻译原理,然后通过一个实际的新闻长句子对几个典型的基于规则的和基于统计的机器翻译系统的翻译结果给出了细致的比较和分析。最后对机器翻译在跨语言检索中的应用前景做出了展望。更多还原

【Abstract】 This paper introduces the application and advance of machine translation on the background of cross—language information retrieval.At First the usage of machine translation in cross—language information retrieval is introduced.Then a brief history of machine translation,as well as various machine translation methods,especially the recent advance of statistical machine translation is described.The advantages and disadvantages of each method are analyzed.A detailed example is given to show the basic procedure of the state of art of phrase—based statistical machine translation.The translation results of a long news sentence generated by several typical rule—based and statistical machine translation systems is present,and detailed comparison and analysis is given.The last section we have a conclution and prospects the future development of this area.更多还原