MalletCorpus.serialize(serializer, fname, corpus, id2word=None, index_fname=None, progress_cnt=None, labels=None, metadata=False)

Iterate through the document stream corpus, saving the documents to fname and recording byte offset of each document. Save the resulting index structure to file index_fname (or fname.index is not set).

This relies on the underlying corpus class serializer providing (in addition to standard iteration):

  • save_corpus method that returns a sequence of byte offsets, one for

    each saved document,

  • the docbyoffset(offset) method, which returns a document positioned at offset bytes within the persistent storage (file).


>>> MmCorpus.serialize('', corpus)
>>> mm = MmCorpus('') # `mm` document stream now has random access
>>> print(mm[42]) # retrieve document no. 42, etc.