A Bichannel Transformer with Context Encoding for Document-Driven Conversation Generation in Social Media

Table 4

Ablation study in terms of BLEU scores and METEOR score.

Model	BLEU-1	BLEU-2	BLEU-3	BLEU-4	METEOR
BCTCE	9.98	3.56	2.05	1.42	5.22
+copy	9.53	3.21	1.70	1.08	4.95
-document	8.55	2.33	0.95	0.46	4.62
-history	8.50	2.84	1.51	1.01	4.54
-context encoder	7.68	1.96	0.74	0.34	4.06
-utterance encoder	9.87	3.34	1.89	1.30	5.13
-bi_channel	9.40	3.05	1.58	1.02	4.80