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Table 7 

Naturalness and user preference percentage of the best performing systems for each pairwise system comparison (winners in bold). Significance was computed using a two-tailed binomial test (*p < 0.05, **p < 0.01, ***p < 0.001).

System ASystem BNatPref
FLM n-best Handcrafted 52.2 52.3 
FLM n-best FLM 1-best 57.3*** 54.2* 
FLM n-best Perceptron 51.2 52.7 
Perceptron Handcrafted 54.2* 54.2* 
System ASystem BNatPref
FLM n-best Handcrafted 52.2 52.3 
FLM n-best FLM 1-best 57.3*** 54.2* 
FLM n-best Perceptron 51.2 52.7 
Perceptron Handcrafted 54.2* 54.2* 
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