Pseudotext Injection and Advance Filtering of Low-Resource Corpus for Neural Machine Translation

Table 6

Examples of Cohen’s Kappa metric scores of synthetic Twi and monolingual target sentence and various changes on every model.

Model (n_block)	Synthetic Twi sentence	Precision score
Example	Twi monolingual sentence: Mfitiaseɛ no onyankopɔn bɔɔ ɔsoro ne asase
	Meaning: in the beginning, God created heaven and earth
Model 1	na baa na baa na baa na baa na baa na baa na baa. (the cane the cane the cane)	0
Model 2	Aseɛ me bɔɔ bɔɔ bɔɔ bɔɔ bɔɔ bɔɔ. (under i created created created created)	0.167
Model 3	Mfitiaseɛ no bɔɔ ne asase. (in the beginning created earth)	0.283
Model 4	Onyankopɔn no ba ɔsoro ma asase. (God come heaven for earth)	0.529
Model 5	Onyankopɔn bɔɔ ɔsoro ne asase. (God created heaven for earth)	0.684
Model 6	Mfitiaseɛ onyankopɔn bɔɔ ɔsoro asase. (in the beginning God created heaven earth)	0.971
Model 7	Mfitiaseɛ no onyankopɔn bɔɔ ɔsoro ne asase (in the beginning, God created heaven and earth)	1