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HFST-REWEIGHT(1)                 User Commands                HFST-REWEIGHT(1)


NAME

       hfst-reweight - =Reweight transducer weights simply


SYNOPSIS

       hfst-reweight [OPTIONS...] [INFILE]


DESCRIPTION

       Reweight transducer weights simply

   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:
       -i, --input=INFILE
              Read input transducer from INFILE

       -o, --output=OUTFILE
              Write output transducer to OUTFILE

   Reweighting options:
       -a, --addition=AVAL
              add AVAL to matching weights

       -b, --multiplier=BVAL
              multiply matching weights by BVAL

       -F, --function=FNAME
              operate matching weights by FNAME

       -l, --lower-bound=LVAL
              match weights greater than LVAL

       -u, --upper-bound=UVAL
              match weights less than UVAL

       -I, --input-symbol=ISYM
              match arcs with input symbol ISYM

       -O, --output-symbol=OSYM
              match arcs with output symbol OSYM

       -S, --symbol=SYM
              match arcs havins symbol SYM

       -e, --end-states-only
              match end states only, no arcs

       -T, --tsv-file=TFILE
              read reweighting rules from TFILE

       If OUTFILE or INFILE is missing or -, standard streams will be used.
       Format of result depends on format of INFILE If AVAL, BVAL or FNAME are
       omitted, they default to neutral elements of addition, multiplication
       or identity function.  If LVAL or UVAL are omitted, they default to
       minimum and maximum values of the weight structure.  If ISYM, OSYM or
       SYM are omitted, they default to value that matches all arcs.  Float
       values are parsed with strtod(3) and integers strtoul(3) The functions
       allowed for FNAME are <cmath> float functions with parameter count of 1
       and a matching return value: abs, acos, asin, ... sqrt, tan, tanh The
       precedence of operands follows the formula BVAL * FNAME(w) + AVAL The
       formula is applied iff ((LVAL <= w) && (w <= UVAL)), where w is weight
       of arc, and (ISYM == i) && (OSYM == o) && ((SYM == i) || (SYM == o)) ^^
       (end state && -e).


REPORTING BUGS

       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>

       hfst-reweight home page:
       <https://kitwiki.csc.fi/twiki/bin/view/KitWiki//HfstReweight>
       General help using HFST software:
       <https://kitwiki.csc.fi/twiki/bin/view/KitWiki//HfstHome>


COPYRIGHT

       Copyright (C) 2010 University of Helsinki, License GPLv3: GNU GPL
       version 3 <http://gnu.org/licenses/gpl.html>
       This is free software: you are free to change and redistribute it.
       There is NO WARRANTY, to the extent permitted by law.

HFST                             October 2014                 HFST-REWEIGHT(1)

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