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Table 6

System-level Spearman (ρ) and Pearson (r) correlation results for the ablation study over the DR-lex metric across the WMT{11,12,13} data sets and overall.

RST variant201120122013Overall
ρrρrρrρr
DR-LEX full 0.848 0.860 0.876 0.912 0.920 0.919 0.881 0.897 
no_rel 0.843 0.856 0.876 0.909 0.919 0.919 0.879 0.895 
no_nuc 0.822 0.828 0.867 0.896 0.910 0.914 0.866 0.879 
no_nuc & no_rel 0.815 0.826 0.847 0.891 0.915 0.913 0.859 0.877 
no_discourse 0.794 0.798 0.865 0.863 0.887 0.903 0.849 0.855 
RST variant201120122013Overall
ρrρrρrρr
DR-LEX full 0.848 0.860 0.876 0.912 0.920 0.919 0.881 0.897 
no_rel 0.843 0.856 0.876 0.909 0.919 0.919 0.879 0.895 
no_nuc 0.822 0.828 0.867 0.896 0.910 0.914 0.866 0.879 
no_nuc & no_rel 0.815 0.826 0.847 0.891 0.915 0.913 0.859 0.877 
no_discourse 0.794 0.798 0.865 0.863 0.887 0.903 0.849 0.855 
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