Taylor Rose wrote: > I am looking at pruning phrase tables for the experiment I'm working on. > I'm not sure if it would be a good idea to include the 'penalty' metric > when calculating probability. It is my understanding that multiplying 4 > or 5 of the metrics from the phrase table would result in a probability > of the phrase being correct. Is this a good understanding or am I > missing something?
I don't think this is correct. At runtime all the features from the phrase table and a number of other features, some only available during decoding, are combined in an inner product with a weight vector to score partial translations. I believe it's fair to say that at no point is there an explicit modeling of "a probability of the phrase being correct", at least not in isolation from the partially translated sentence. This is not to say you couldn't model this yourself, of course. - John Burger MITRE
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