Provided by: hfst_3.16.0-5_amd64
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 with input or output symbol SYM or both -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. Only one ISYM, OSYM and SYM can be given. 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://github.com/hfst/hfst/issues> hfst-reweight home page: <https://github.com/hfst/hfst/wiki/HfstReweight> General help using HFST software: <https://github.com/hfst/hfst/wiki>
COPYRIGHT
Copyright © 2017 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.