Discriminative translation models utilizing source context have been shown to
help statistical machine translation performance. We propose a novel extension
of this work using target context information. Surprisingly, we show that this
model can be efficiently integrated directly in the decoding process. Our
approach scales to large training data sizes and results in consistent
improvements in translation quality on four language pairs. We also provide an
analysis comparing the strengths of the baseline source-context model with our
extended source-context and target-context model and we show that our extension
allows us to better capture morphological coherence. Our work is freely
available as part of Moses.

通过使用源上下文信息优化的翻译模型以提高机器翻译性能，我们提出了一种使用目标上下文信息的新颖扩展，令人惊讶的是，我们证明可以将该模型直接高效地集成在解码过程中，我们的方法可以应用于大规模训练数据，对四种语言对的语言翻译质量有一致提高，我们提供了分析，比较基线基于源上下文模型的优势，以及我们扩展的源上下文和目标上下文模型，结果显示，我们的扩展可以更好地捕捉形态学一致性。