The invention discloses a subject information-based field bilingual
sentence pair
selection method, which is used for selecting a
sentence pair subset related to a to-be-translated text from a large-scale
bilingual corpus mixed with fields by virtue of subject correlation between a bilingual
sentence pair and a target field so as to
train a specific field
translation system and improve the translation quality of the field text. The method comprises the following steps: firstly, learning topic vectors of
phrase pairs by using context words of the
phrase pairs in a
bilingual corpus; secondly, for a target domain development set and a candidate bilingual
sentence pair, obtaining topic vectors of the target domain development set and the candidate bilingual
sentence pair by utilizing the extracted
phrase pair set; and finally, the topic relevancy between the candidate bilingual sentence pairs and the
field development set text is calculated, and the sentence pairs with high relevancy are preferentially selected as target
field training data. The invention further discloses
a domain bilingual
sentence pair selection system based on the theme information. According to the method, the field-related bilingual sentence pairs are selected by means of the topic relevancy of the text, and the problem of insufficient training data in a specific field is solved.