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Table 5: 
bleu scores with mutual information scoring function on IWSLT’14 De-En. Baseline is PMI decoding with unboundedp(y), that is, ε = 0. Search error is with respect to beam search decoding of baseline with same β.
kεβ# callssearch errorbleu
Baseline − .05 115 − 33.2 
10 − .05 229 − 33.0 
 
Heuristic .02 .05 129(0%) 42.7% 33.2 
10 .02 .05 256(0%) 42.7% 33.0 
 
Stopping Criterion 3e–4 .05 114(1%) 29.2% 33.2 
10 5e–5 .05 224(2%) 26.6% 33.0 
kεβ# callssearch errorbleu
Baseline − .05 115 − 33.2 
10 − .05 229 − 33.0 
 
Heuristic .02 .05 129(0%) 42.7% 33.2 
10 .02 .05 256(0%) 42.7% 33.0 
 
Stopping Criterion 3e–4 .05 114(1%) 29.2% 33.2 
10 5e–5 .05 224(2%) 26.6% 33.0 
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