Method for providing translation information, non-transitory computer-readable recording medium, and translation information providing apparatus

1. A method for providing translation information performed by a translation information providing apparatus that translates a plurality of languages, the method comprising:

generating a first translation by translating a first original sentence in a first language into a second language;

generating a second translation by translating a second original sentence in the first language into the second language, the second original sentence being semantically different from the first original sentence;

generating a first back translation by back-translating the first translation into the first language;

generating a second back translation by back-translating the second translation into the first language;

determining whether the first back translation semantically matches or is semantically similar to the first original sentence;

displaying at least one of the first original sentence or the first translation, and the first back translation, in response to determining that the first back translation semantically matches or is semantically similar to the first original sentence;

determining whether the first translation generated from the first original sentence and the second translation generated from the second original sentence are the same;

in response to determining that the first translation and the second translation are the same,

determining whether the second back translation is semantically different from the first back translation;

determining whether the second back translation is semantically matches or is semantically similar to the second original sentence; and

displaying at least one of the second original sentence or the second translation, and the second back translation, in response to determining that the second back translation is semantically different from the first back translation and that the second back translation semantically matches or is semantically similar to the second original sentence.

2. The method according to claim 1 , further comprising:

generating a plurality of first back translations by back-translating the first translation into the first language;

generating a first back translation set including at least one back translation that semantically matches or is semantically similar to the first original sentence, the at least one back translation being one of the plurality of first back translations; and

displaying at least one of the first original sentence or the first translation and the first back translation set.

3. The method according to claim 1 , further comprising:

generating a plurality of first translations by translating the first original sentence into the second language;

generating a plurality of first back translations by back-translating the plurality of first translations into the first language;

generating a first back translation set including at least one back translation that semantically matches or is semantically similar to the first original sentence, the at least one back translation is one of the plurality of first back translations; and

displaying at least one of the first original sentence or the first translation and the first back translation set.

4. The method according to claim 1 , further comprising:

calculating a degree of similarity indicating whether the first back translation semantically matches the first original sentence or how much the first back translation is semantically similar to the first original sentence;

generating a first back translation set including at least one back translation whose degree of similarity is higher than a certain value; and

displaying at least one of the first original sentence or the first translation and the first back translation set.

5. The method according to claim 4 , further comprising:

displaying the first original sentence and the first back translation set on a display; and

displaying, when a certain operation is performed for the first original sentence and the first back translation set, the first translation on the display.

6. The method according to claim 1 , further comprising:

displaying the first original sentence and the first back translation on a display; and

displaying, when a certain operation is performed for the first original sentence and the first back translation, the first translation on the display.

7. The method according to claim 5 , further comprising:

displaying, when the certain operation is input, the first translation on the display in an orientation different from an orientation of the first original sentence.

8. A non-transitory computer-readable recording medium storing a translation information providing program for causing a computer to function as a translation information providing apparatus that translates a plurality of languages, the computer performing operations comprising:

generating a first translation by translating a first original sentence in a first language into a second language;

generating a second translation by translating a second original sentence in the first language into the second language, the second original sentence being semantically different from the first original sentence;

generating a first back translation by back-translating the first translation into the first language;

generating a second back translation by back-translating the second translation into the first language;

determining whether the first back translation semantically matches or is semantically similar to the first original sentence;

displaying at least one of the first original sentence or the first translation, and the first back translation, in response to determining that the first back translation semantically matches or is semantically similar to the first original sentence;

determining whether the first translation generated from the first original sentence and the second translation generated from the second original sentence are the same;

in response to determining that the first translation and the second translation are the same,

determining whether the second back translation is semantically different from the first back translation;

determining whether the second back translation is semantically matches or is semantically similar to the second original sentence; and

displaying at least one of the second original sentence or the second translation, and the second back translation, in response to determining that the second back translation is semantically different from the first back translation and that the second back translation semantically matches or is semantically similar to the second original sentence.

9. A translation information providing apparatus that translates a plurality of languages, the translation information providing apparatus comprising:

a processor; and

a recording medium storing a translation information providing program for causing the processor to perform operations including:

generating a first translation by translating a first original sentence in a first language into a second language;

generating a second translation by translating a second original sentence in the first language into the second language, the second original sentence being semantically different from the first original sentence;

generating a first back translation by back-translating the first translation into the first language;

generating a second back translation by back-translating the second translation into the first language;

determining whether the first back translation semantically matches or is semantically similar to the first original sentence;

displaying at least one of the first original sentence or the first translation, and the first back translation, in response to determining that the first back translation semantically matches or is semantically similar to the first original sentence;

determining whether the first translation generated from the first original sentence and the second translation generated from the second original sentence are the same;

in response to determining that the first translation and the second translation are the same,

determining whether the second back translation is semantically different from the first back translation;

determining whether the second back translation is semantically matches or is semantically similar to the second original sentence; and

displaying at least one of the second original sentence or the second translation, and the second back translation, in response to determining that the second back translation is semantically different from the first back translation and that the second back translation semantically matches or is semantically similar to the second original sentence.