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corpora._mmreader – Reader for corpus in the Matrix Market format.¶Reader for corpus in the Matrix Market format.
gensim.corpora._mmreader.MmReader(input, transposed=True)¶Bases: object
Matrix market file reader (fast Cython version), used internally in MmCorpus.
Wrap a term-document matrix on disk (in matrix-market format), and present it as an object which supports iteration over the rows (~documents).
num_docs¶Number of documents in market matrix file.
int
num_terms¶Number of terms.
int
num_nnz¶Number of non-zero terms.
int
Notes
Note that the file is read into memory one document at a time, not the whole matrix at once (unlike e.g. scipy.io.mmread and other implementations). This allows us to process corpora which are larger than the available RAM.
input ({str, file-like object}) – Path to the input file in MM format or a file-like object that supports seek() (e.g. smart_open objects).
transposed (bool, optional) – Do lines represent doc_id, term_id, value, instead of term_id, doc_id, value?
docbyoffset(self, offset)¶Get the document at file offset offset (in bytes).
offset (int) – File offset, in bytes, of the desired document.
Document in sparse bag-of-words format.
list of (int, str)
input¶object
input
num_docs‘long long’
num_docs
num_nnz‘long long’
num_nnz
num_terms‘long long’
num_terms
skip_headers(self, input_file)¶Skip file headers that appear before the first document.
input_file (iterable of str) – Iterable taken from file in MM format.
transposed¶‘bool’
transposed
