One promising line of research tackling this issue is to improve the specificity of responses, building on the intuition that generic responses frequently appear in the training data or consist of frequent words (Yao et al., 2016;Zhang et al., 2018b;.
past work in sentence specificity-the "quality of belonging or relating uniquely to a particular subject" 1has shown that word frequency is only one aspect of specificity, and that specificity involves a wide range of phenomena including word usage, sentence structure (Louis and Nenkova, 2011;Li and Nenkova, 2015;Lugini and Litman, 2017) and discourse context (Dixon, 1987;Lassonde and O'Brien, 2009).