Abstract: An apparatus has a network interface circuit to receive a source sentence from a network connected client device. A processor is connected to the network interface circuit. A memory is connected to the processor. The memory stores parameters of a neural machine translation system and instructions executed by the processor to operate the neural machine translation system trained on a corpus of source sentences and corresponding target sentences. The neural machine translation system is trained to predict a target sentence from a source sentence. A translation hypothesis is formed for the source sentence to form the target sentence. The target sentence is supplied to the network connected client device. A correct translation is received from the network connected client device. Parameters of the neural machine translation system are updated based upon the correct translation.