Github user kpu commented on the issue:
https://github.com/apache/incubator-joshua/pull/48
See my comments on https://github.com/kpu/kenlm/pull/66 .
This makes sense now and explains the behaviour, but I still think there is
a non-segfault bug related to backoffs.
Another, IMHO cleaner, solution is to use separate Chart objects for each
LM for each sentence. How reasonable is that to accomplish Joshua side?
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