BILINGUAL INFORMATION RETRIEVAL APPARATUS, TRANSLATION APPARATUS, AND COMPUTER READABLE MEDIUM USING EVALUATION INFORMATION FOR TRANSLATION

A bilingual information retrieval apparatus includes an input text acquisition unit, a first memory, a first language construct information selection unit, a second memory, and a second language construct information selection unit. The input text acquisition unit acquires input text in a first language. The first memory stores plural pieces of first language construct information indicating a construct of text in the first language. The first language construct information selection unit selects a piece of first language construct information corresponding to the input text. The second memory stores plural pieces of second language construct information indicating a construct of text in a second language corresponding to the selected piece of first language construct information. The second language construct information selection unit selects a piece of second language construct information on the basis of evaluation information.