mmseg man page

mmseg — maximum matching segment Chinese text.


mmseg -d dict_file [option]... [corpus_file]...


mmseg is a tool for segmenting Chinese text into words using maximum matching algorithm. mmseg segments corpus_file, or standard input if no filename is specified, and write the segmented result to standard output.


-d dict_file

Use dict_file as lexicon. A default lexicon can be found at /usr/share/sunpinyin-slm/dict.utf8.

-f,--format (text|bin)

Output Format, can be 'text' or 'bin'. default 'bin'. Normally, in text mode, word text are output, while in binary mode, binary short integer of the word-ids are written to stdout.

-s, --stok STOK_ID

Sentence token id. Default 10. It will be written to output in binary mode after every sentence.

-i, --show-id

Show Id info. Under text output format mode, attach id after known words.  If under binary mode, print id(s) in text.

-a, --ambiguious-id AMBI-ID

Ambiguious means ABC => A BC or AB C. If specified (AMBI-ID != 0),  The sequence ABC will not be segmented, in binary mode, the AMBI-ID is written out; in text mode, "<ambi>ABC</ambi>" will be output. Default is 0.


Under binary mode, consecutive id of 0 are merged into one 0. Under text mode, no space are inserted between unknown-words.


Originally written by Phill.Zhang <>. Currently maintained by Kov.Chai <>.

See Also

slmseg(1), ids2ngram (1).

Referenced By

ids2ngram(1), slmseg(1).

2016-03-01 perl v5.24.1 User Contributed Perl Documentation