This validates that the properties about similarity frequency and sentence length play important roles in generating better responses.
relevance Acceptance Seq2Seq 1.96±3.8e-5 1.31±5.3e-3 0.42±4.7e-4 Seq2Seq-rS 1.97±8.1e-5 1.30±2.1e-3 0.42±9.9e-4 Seq2Seq-MMI 1.94±7.2e-5 1.19±4.0e-3 0.41±1.9e-4 Seq2Seq-DD 1.86±2.8e-3 1.40±1.5e-2 0.49±2.4e-3 Ours-rWE 1.95±1.9e-4 1.30±5.1e-3 0.42±4.2e-4 Ours-rWF 1.97±1.5e-4 1.47±2.1e-3 0.51±6.3e-4 Ours-rWEF 1.96±8.3e-5 1.59±1.9e-2 0.55±4.4e-3 the average percentage of the generated responses that are assigned to relevance rating 2 (relevant, including the generic responses) and 3 (relevant as well as interesting) are presented in Table 4.