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

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

       -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 a 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).

       TFILE  should  contain lines with tab-separated pairs of SYM and AVAL or BVAL. AVAL values
       must be preceded by a + character, BVAL should be given as  plain  digits.  Comment  lines
       starting with # and empty lines are ignored.

       Weights   are   by   default   modified  for  all  arcs  and  end  states,  unless  option
       --end-states-only or --arcs-only is used.

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  ©  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.