Method and system of translating a source sentence in a first language into a target sentence in a second language

A method and system for translating a source sentence in a first language into a target sentence in a second language is disclosed. The method comprises acquiring the source sentence and generating, a first translation hypothesis and a second translation model. A first score value is assigned to the first translation hypothesis, the first score value being representative of a likelihood of the first translation hypothesis is one of a semantically illogical translation. A second score value is assigned to the first translation hypothesis, the second score value being representative of an expected difference in translation quality between the first translation hypothesis and the second translation hypothesis. The target sentence corresponds to: the first translation hypothesis, upon determining that both the first score value and the second score value meet a condition; and the second translation hypothesis, upon determining that the condition is not met.