Please don't send duplicate messages. Sometimes it takes a while for
people to respond.

2013/11/13 Srevastan Muralidharan <srevat...@edmodo.com>:
> Usefulness: It will help in cases when one has to add additional documents
> to the training data, and one should not have to start from the beginning.

I'm not sure I understand the use case. Expanding the vocabulary
causes the dimensionality of the feature vectors to change, so no
model trained on the initial batch would work with subsequent batches.

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