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Table 7

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

RST variantcs-ende-enes-enfr-en
ρ*rρrρrρr
DR-LEX full 0.890 0.893 0.782 0.840 0.970 0.952 0.943 0.940 
no_rel 0.894 0.892 0.775 0.833 0.968 0.952 0.942 0.939 
no_nuc 0.899 0.885 0.739 0.802 0.958 0.949 0.935 0.925 
no_nuc & no_rel 0.895 0.884 0.720 0.798 0.935 0.950 0.940 0.917 
no_discourse 0.833 0.861 0.738 0.743 0.942 0.930 0.936 0.919 
RST variantcs-ende-enes-enfr-en
ρ*rρrρrρr
DR-LEX full 0.890 0.893 0.782 0.840 0.970 0.952 0.943 0.940 
no_rel 0.894 0.892 0.775 0.833 0.968 0.952 0.942 0.939 
no_nuc 0.899 0.885 0.739 0.802 0.958 0.949 0.935 0.925 
no_nuc & no_rel 0.895 0.884 0.720 0.798 0.935 0.950 0.940 0.917 
no_discourse 0.833 0.861 0.738 0.743 0.942 0.930 0.936 0.919 
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