| 主权项 |
1. A speech translation apparatus comprising:
a speech recognizer that performs a speech recognition process on a current speech sound to generate a current speech recognition result; a machine translator that performs machine translation from a first language to a second language on the current speech recognition result to generate a current machine translation result; a first storage that stores a dialog history for each of one or more speeches constituting a current dialog; an extractor that extracts a phrase from a text group to obtain a set of phrases, the text group including the current speech recognition result, a past speech recognition result and a past machine translation result both included in the dialog history; an allocator that allocates, to each of the phrases in the set of phrases, a weight dependent on a difference between a current dialog status and a dialog status associated with an original speech sound that corresponds to a text in which each of the phrases appears; a second storage that stores a plurality of examples in the first language and translations in the second language, each of the translations corresponding to each of the examples in the first language; a searcher that searches the plurality of examples in the first language for an example including one or more phrases included in the set of phrases to obtain a hit example set; a calculator that calculates, for each of hit examples included in the hit example set, a degree of similarity between the hit example and the current speech recognition result; and a sorter that calculates a score of each of the hit examples included in the hit example set based on the weight and the degree of similarity to sort the hit examples based on the score. |
