hfst-conjunct

Purpose

Conjunct (intersect, AND) two transducers.

Usage

The help message:

Usage: hfst-conjunct [OPTIONS...] [INFILE1 [INFILE2]]
Conjunct (intersect, AND) two transducers

Common options:
  -h, --help             Print help message
  -V, --version          Print version info
  -v, --verbose          Print verbosely while processing
  -q, --quiet            Only print fatal erros and requested output
  -s, --silent           Alias of --quiet
Input/Output options:
  -1, --input1=INFILE1   Read first input transducer from INFILE1
  -2, --input2=INFILE2   Read second input transducer from INFILE2
  -C, --do-not-convert   Do not allow transducers to be converted into the same type
  -o, --output=OUTFILE   Write results to OUTFILE
Flag diacritics:
  -F, --harmonize-flags  Harmonize flag diacritics
  -H, --do-not-harmonize Do not harmonize

If OUTFILE, or either INFILE1 or INFILE2 is missing or -,
standard streams will be used.
INFILE1, INFILE2, or both, must be specified.
Format of result depends on format of INFILE1 and INFILE2;
both should have the same format.

The operation is applied pairwise for INFILE1 and INFILE2
that must have the same number of transducers.
If INFILE2 has only one transducer, the operation is applied for
each transducer in INFILE1 keeping the second transducer constant.


Examples:
  hfst-conjunct -o dog.hfst cat_or_dog.hfst dog_or_mouse.hfst

Report bugs to <hfst-bugs@helsinki.fi> or directly to our bug tracker at:
<https://sourceforge.net/tracker/?atid=1061990&group_id=224521&func=browse>

Examples

We create two transducers. One will recognize the strings "cat" and "dog" and the other "dog" and "mouse". Then we conjunt them to get the strings that both transducers recognize. The commands below:

echo -e "cat\ndog" | hfst-strings2fst -j -f foma > cat_or_dog.hfst
echo -e "dog\nmouse" | hfst-strings2fst -j -f foma > dog_or_mouse.hfst 
hfst-conjunct cat_or_dog.hfst dog_or_mouse | hfst-fst2strings

will print to the standard output:

dog

-- ErikAxelson - 09 Jul 2008