---
name: "hfst-expand-equivalences"
section: "1"
platform: "linux"
package: "hfst"
version: "3.16.2-1+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/hfst-expand-equivalences"
---

# hfst-expand-equivalences(1)

\=Extend transducer arcs for equivalence classes

## NAME

hfst-expand-equivalences - =Extend transducer arcs for equivalence classes

## SYNOPSIS

**hfst-expand-equivalences** \[*OPTIONS*...\] \[*INFILE*\]

## DESCRIPTION

Extend transducer arcs for equivalence classes

### 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**

### Eqv. class extension options:

- **-f**, **--from**=*ISYM*

  convert single symbol ISYM to allow OSYM

- **-t**, **--to**=*OSYM*

  convert to OSYM

- **-a**, **--acx**=*ACXFILE*

  read extensions in acx format from ACXFILE

- **-T**, **--tsv**=*TSVFILE*

  read extensions in tsv format from TSVFILE

- **-l**, **--level**=*LEVEL*

  perform extensions on LEVEL of fsa

Either ACXFILE, TSVFILE or both ISYM and OSYM must be specified. LEVEL should be either {upper, first, 1, input, surface}, {lower, second, 2, output, analysis} or both. If LEVEL is omitted, default is first. Examples:

- hfst-expand-equivalences **-o** rox.hfst **-a** romanian.acx ro.hfst

  extend romanian charequivalences

## REPORTING BUGS

Report bugs to \<hfst-bugs@helsinki.fi\> or directly to our bug tracker at: \<https://github.com/hfst/hfst/issues\> hfst-expand-equivalences home page: \<https://github.com/hfst/hfst/wiki/HfstExpandEquivalences\>\
 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.