Neural Discourse Modelling of Conversations

Deep neural networks have shown recent promise in many language-related tasks such as the modelling of conversations. We extend RNN-based sequence to sequence models to capture the long-range discourse across many turns of conversation. We perform a sensitivity analysis on how much additional context affects performance, and provide quantitative and qualitative evidence that these models can capture discourse relationships across multiple utterances. Our results show how adding an additional RNN layer for modelling discourse improves the quality of output utterances and providing more of the previous conversation as input also improves performance. By searching the generated outputs for specific discourse markers, we show how neural discourse models can exhibit increased coherence and cohesion in conversations.