Hi Jeremy
It probably won't be hard - but I haven't looked at the code in a long time.
Note that we didn't see any gain from lmbr. We only ever implemented it as
reranking - not lattice rescoring - but according to the original paper that
should still help
Cheers - Barry
On 7 May 2015 19:14:18 BST, Jeremy Gwinnup <[email protected]> wrote:
>How hard would it be to append the LMBR scores to the list of features
>instead of overwriting it? Maybe I can tackle this at MTMA15 next week.
>I’m not too worried about the long runtime at least initially.
>
>> On May 6, 2015, at 5:01 PM, Barry Haddow <[email protected]>
>wrote:
>>
>> Hi Jeremy
>>
>> It's been a long time since I looked at this, but I think these are
>the component scores in the linearised corpus bleu used in Lattice MBR
>(see Tromble et al (2008), section 5). They are used to rescore the
>nbest list, and must be implemented by replacing the original feature
>vectors.
>>
>> So it looks like lattice MBR doesn't work with nbest lists, or at
>least doesn't give you what you need for tuning. Do you really want to
>tune with lattice MBR? It's going to be very slow,
>>
>> cheers - Barry
>>
>> On 06/05/15 20:49, Jeremy Gwinnup wrote:
>>> Hi,
>>>
>>> I’ve been attempting to experiment with lattice MBR with various
>settings and I see something weird happen to my nbest lists:
>>>
>>> 0 ||| the prime ministers of india and japan meet in tokyo |||
>Distortion0= … etc etc becomes
>>>
>>> 0 ||| the prime ministers of india and japan meet in tokyo ||| map:
>0 w: 12 11.19 8.06 6.63 5.39
>>>
>>> My feature weights get replaced by map and w feature with 5 weights
>>>
>>> I’m setting the following as moses.ini parameters:
>>> lminimum-bayes-risk
>>> lmbr-p
>>> lmbr-r
>>> mbr-scale
>>> lmbr-pruning-factor
>>>
>>> Anything extra that I need to know as far as what map and w are, or
>how to get my normal features back in the nbest list?
>>>
>>> Thanks!
>>> -Jeremy
>>> _______________________________________________
>>> Moses-support mailing list
>>> [email protected]
>>> http://mailman.mit.edu/mailman/listinfo/moses-support
>>
>>
>> --
>> The University of Edinburgh is a charitable body, registered in
>> Scotland, with registration number SC005336.
>>
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.
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