There are a few ways you can use pipelines in Apertium. One of them is Modes files. Modes files (typically called
modes.xml) are XML files (see modes.dtd) which specify which programs should be run and in what order. Normally each linguistic package has one of these files which specifies various ways in which you can use the data to perform translations.
See the modes file from es-ca for an example. The modes which do not say
install="yes" are only usable with the -d switch to apertium, these are typically used during development (eg. ca-es-anmor which only performs morphological analysis on Catalan and nothing else).
See Writing_Makefiles#Modes on how to ensure modes that say install="yes" are installed.
The main translation mode is always named "from-to", e.g. "sme-nob". The debug modes each have a suffiks, e.g. "sme-nob-morph".
Common debug mode names:
- -anmor or -morph run the morphological analysers
- these are used equivalently
- -disam runs up until morphological (CG) disambiguation
- -syntax runs up until syntactical (CG) disambiguation
- -tagger runs up until probabilistic (apertium-tagger) disambiguation (or, if no .prob, up until the last disambiguation step)
- -biltrans runs up until the bidix
- -lex runs up until lexical selection
- -transfer runs up until (1-stage) transfer
- -chunker runs up until the first stage of 3-or-more-stage transfer
- -interchunk runs up until the second stage of 3-stage transfer
- -interchunk1 and -interchunk2 are used when the pair has 4-stage transfer
- -postchunk runs up until the last stage of transfer
- -dgen run up until generation (using lt-proc -d to include debug symbols)
In order to get some statistical information about translations made using Apertium, we've hacked the main translation mode, pausing the pipeline just after disambiguation and saving the output into a temp file. After that, pipeline is resumed with temp file as stdin.
As an example, you can see the /broken/ pipeline for ca-es, installed as
/usr/local/bin/lt-proc /usr/local/share/apertium/apertium-es-ca/ca-es.automorf.bin > $LOGSDIR$SEC.tmp; /usr/local/bin/apertium-tagger -g /usr/local/share/apertium/apertium-es-ca/ca-es.prob < $LOGSDIR$SEC.tmp \ |/usr/local/bin/apertium-pretransfer|/usr/local/bin/apertium-transfer /usr/local/share/apertium/apertium-es-ca/apertium-es-ca.trules-ca-es.xml \ /usr/local/share/apertium/apertium-es-ca/trules-ca-es.bin /usr/local/share/apertium/apertium-es-ca/ca-es.autobil.bin \ |/usr/local/bin/lt-proc $1 /usr/local/share/apertium/apertium-es-ca/ca-es.autogen.bin \ |/usr/local/bin/lt-proc -p /usr/local/share/apertium/apertium-es-ca/ca-es.autopgen.bin
And an example of calling apertium with this mode would be the following
LOGSDIR=~/logs/apertium/; SEC=`date +%s`; echo "Ara Apertium permet extraure estadístiques" | apertium ca-es-estadistiques
In that example, $LOGSDIR is a folder where the logs will be saved, and $SEC is an unique ID for that log.
When translation is done, we can process the log created in order to get statistics.
See Mixed modes