Introduction to Machine Translation

1、Machine Translation 黃宗文16721539Machine Translation Definition of MT History of Development Contrast between MT and HT Machine Translation Method The Limitation of MT Prospect of MTThe Definition of MTMT, the abbreviation of machine translation, is a sub-field of computational linguistics that invest

2、igates the use of software to translate text or speech from one natural language to another.The Definition of MTThe study of machine translation is based on the three disciplines of linguistics, mathematics and computer science. Machine translation effect is good or bad, it is entirely dependent on

3、these three aspects of the joint efforts.The Definition of MTHistory of DevelopmentContrast between MT and HTMT:One sentence is treated without reference to the context;The analysis of the source language is only to solve the syntactic relationship, is not a sense of understanding;Translation is bas

4、ed on the source language of the syntactic structure, by the source language of the structural constraints of the syntax;Translation is only the mechanical structure of the corresponding and vocabularyContrast between MT and HT HT: First read the full text, before and after the care; Translation bas

5、ed on the understanding of the source language, not the source language of the constraints of the syntactic structure; Artificial translation is a process of creation.Machine Translation MethodMachine Translation Method Machine Translation Based on Translation Machine translation system of the opera

6、tion process, there are retrieval, analysis, conversion and generation of the four main stages. This is known as a translation-based machine translation system. Is also considered to be the most appropriate mechanism for simulating human translation activities.Machine Translation MethodTranslation M

7、ethod Based on Intermediate LanguageIntermediate language-based translation is to produce a language called intermediate language after analyzing the source language, and then generate the target language directly from the representation of the intermediate language. The so-called intermediate langu

8、age is a systematic representation of the computer representation of natural language, which attempts to create an artificial language that is independent of various natural languages while representing various natural languages.Machine Translation MethodStatistical Machine TranslationA machine tran

9、slation approach based on statistics treats machine translation as an information transmission process and interprets machine translation with a channel model. The idea is that the translation from source language sentence to target language sentence is a probabilistic problem. Any target language s

10、entence may be a translation of any source language sentence, but the probability is different. The task of machine translation is to find the sentence with the greatest probability . The specific method is to translate as the original text through the model to think that the decoding process.Machin

11、e Translation MethodCase - based Machine TranslationNot through deep analysis, only through the experience of the existing knowledge, through the analogy principle of translation. The translation process is first of all the source language correctly decomposed into sentences, and then broken down in

12、to the phrase fragments, and then through the analogy of these phrases translated into target language phrases, and finally these phrases into long sentences.The Limitation of MT Translation of names Translation of idioms Translation of literary works Translation of IdiomsThe Limitation of MT 滿地黃花堆積

13、，憔悴損，而今有誰堪摘？ MT: Everywhere yellow flower accumulation gaunt who can pick the loss now ? HT: The ground is covered with yellow flowers faded and fallen in showers. Who will pick them up now?The Limitation of MT 明月幾時(shí)有，把酒問青天 MT: When the moon is, wine ask blue sky . HT: When will the moon be clear and bright? With a cup of wine in my hand, I ask the blue sky.The Limitation of MT 別狗咬呂洞賓，不識(shí)好人心。 MT: The dog bite lv dongbin does not know good hearts. HT: Dont bite the hand that feeds you.Prospect of MT Fro