Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Dataset statistics
| Datasets | Dialog | Utterances | Tokens | Knowledge |
|---|---|---|---|---|
| KaMed | 17864 | 153,000 | 6,663,272 | Y |
| COVID-19 | 1088 | 9494 | 406,550 | N |
Experimental results
| Datasets | Model | B@1 | B@2 | D@1 | D@2 | Perplexity |
|---|---|---|---|---|---|---|
| KaMed | Seq2Seq | 2.71 | 1.58 | 1.24 | 6.85 | 24.82 |
| HRED | 2.59 | 1.59 | 1.17 | 6.65 | 27.14 | |
| VHRED | 2.49 | 1.55 | 1.15 | 6.42 | 28.65 | |
| Ours | 2.79 | 1.89 | 1.58 | 8.56 | 22.91 | |
| COVID-19 | Seq2Seq | 3.13 | 5.70 | 5.5 | 29.0 | 53.3 |
| HRED | 2.56 | 5.73 | 5.21 | 32.39 | 49.6 | |
| VHRED | 3.31 | 5.65 | 5.65 | 34.56 | 47.2 | |
| Ours | 3.57 | 5.90 | 5.89 | 31.21 | 40.8 |