Dear moses-developer,
Currently, I am using moses of version 2008-02-20.
if I use the option: -include-alignment-in-n-best to keep the phrase alignment
informarion in the nbest list, more than half hypotheses got wrong phrase
alignments, such as:
0 ||| oh , the flight is the c 3 0 6 . ||| d: 0 -3.77112 0 0 -2.52851 0 0 lm:
-54.4133 tm: -8.65867 -10.4881 -6.35404 -7.50889 5.99938 w: -11 ||| -2.98287
||| 0-1=0-1 2=2 3-4=3-4 5=5-6 6=7 7-9=7-9
in this example, the eighth target word ("3") is aligned twice by: 6=7 7-9=7-9
3 ||| 2 passengers is . ||| d: 0 -2.81628 0 0 -1.6697 0 0 lm: -27.6149 tm:
-23.9911 -20.0994 -7.60809 -5.73339 3.99959 w: -4 ||| -3.15759 ||| 0-1=0 2-3=1
4=4 5-6=5
there are only 4 target words, but the alignment indicates to the fifth and
sixth target words: 4=4 5-6=5
in total, out of 2,440,820 hypotheses (IWSLT'06 dev set, 5000-best), there are
1,780,673 got wrong phrase alignment.
best regards,
-Boxing
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