Abstract
It is desirable for dialog systems to have capability to express specific emotions during a
conversation, which has a direct, quantifiable
impact on improvement of their usability and
user satisfaction. After a careful investigation
of real-life conversation data, we found that
there are at least two ways to express emotions
with language. One is to describe emotional
states by explicitly using strong emotional
words; another is to increase the intensity of
the emotional experiences by implicitly combining neutral words in distinct ways. We propose an emotional dialogue system (EmoDS)
that can generate the meaningful responses
with a coherent structure for a post, and meanwhile express the desired emotion explicitly or
implicitly within a unified framework. Experimental results showed EmoDS performed better than the baselines in BLEU, diversity and
the quality of emotional expression