Update gensim word2vec model

Question

I have a word2vec model in gensim trained over 98892 documents. For any given sentence that is not present in the sentences array (i.e. the set over which I trained the mode

Answer 1

If your model was generated using the C tool load_word2vec_format it is not possible to update that model. See the word2vec tutorial section on Online Training Word2Vec Tutorial:

Note that it’s not possible to resume training with models generated by the C tool, load_word2vec_format(). You can still use them for querying/similarity, but information vital for training (the vocab tree) is missing there.