1. A domain-adaptive portable machine translation device for closed captions, comprising: a keyword extraction part extracting a plurality of keywords from an input caption sentence, wherein the keywords includes a last word and at least one noun in the caption sentence; a style and domain recognition part recognizing a style and a domain of the caption sentence from a literary or colloquial style and a plurality of domains, wherein the style is recognized based on the extracted last word and a pre-constructed predicate ending/style statistical dictionary, wherein after the style is recognized then the domain is recognized based on the extracted keywords and a pre-constructed vocabulary/domain statistical dictionary; a dynamic translation knowledge construction part dynamically loading, into a dynamic translation database (DB) of a main memory, a colloquial morpheme analysis dictionary or a literary morpheme analysis dictionary based on the recognized style and a pre-analyzed domain-specific context dictionary, a domain-specific technical terms translation dictionary and a domain-specific vocabulary/meaning co-occurrence dictionary based on the recognized domain a dynamic translation module construction part dynamically reconstructing a translation module based on the recognized style and domain; a morpheme analysis part analyzing morphemes of the caption sentence under a control of the dynamic translation module construction part; a sentence pattern application part performing sentence-by-sentence translation by applying a sentence pattern to the caption sentence under a control of the dynamic translation module construction part; a syntax analysis part analyzing syntax of the caption sentence under a control of the dynamic translation module construction part; and a pattern-based translation generation part producing a pattern-based translation of the caption sentence based on the syntax analysis result.
1. A domain-adaptive portable machine translation device for closed captions, comprising: a keyword extraction part extracting a plurality of keywords from an input caption sentence, wherein the keywords includes a last word and at least one noun in the caption sentence; a style and domain recognition part recognizing a style and a domain of the caption sentence from a literary or colloquial style and a plurality of domains, wherein the style is recognized based on the extracted last word and a pre-constructed predicate ending/style statistical dictionary, wherein after the style is recognized then the domain is recognized based on the extracted keywords and a pre-constructed vocabulary/domain statistical dictionary; a dynamic translation knowledge construction part dynamically loading, into a dynamic translation database (DB) of a main memory, a colloquial morpheme analysis dictionary or a literary morpheme analysis dictionary based on the recognized style and a pre-analyzed domain-specific context dictionary, a domain-specific technical terms translation dictionary and a domain-specific vocabulary/meaning co-occurrence dictionary based on the recognized domain a dynamic translation module construction part dynamically reconstructing a translation module based on the recognized style and domain; a morpheme analysis part analyzing morphemes of the caption sentence under a control of the dynamic translation module construction part; a sentence pattern application part performing sentence-by-sentence translation by applying a sentence pattern to the caption sentence under a control of the dynamic translation module construction part; a syntax analysis part analyzing syntax of the caption sentence under a control of the dynamic translation module construction part; and a pattern-based translation generation part producing a pattern-based translation of the caption sentence based on the syntax analysis result. 3. The machine translation device according to claim 1 , wherein the style and domain recognition part determines whether the caption sentence conforms to a literary style or a colloquial style by comparing frequency of the last word of the caption sentence occurring in the colloquial style with frequency of the last word of the caption sentence occurring in the literary style based on the predicate ending/style statistical dictionary.