Matxin

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Matxin is a free software machine translation engine related to Apertium. It allows for deeper transfer than can be found in Apertium. The linguistic data available under a free-licence is a fraction of the data that is used in the papers and descriptions of the subject, so naturally the translations from the pair will be less good than you can find results in the paper.

Prerequisites

  • BerkleyDB — sudo apt-get install libdb4.6++-dev
  • libpcre3 — sudo apt-get install libpcre3-dev

Install the following libraries in <prefix>,

If you're installing into a prefix, you'll need to set two environment variables: CPPFLAGS=-I<prefix>/include LDFLAGS=-L<prefix>/lib ./configure --prefix=<prefix>

Building

Checkout
$ svn co http://matxin.svn.sourceforge.net/svnroot/matxin

First comment out the deformatters in the src/Makefile.am as they don't build properly. 

bin_PROGRAMS = Analyzer LT ST_intra ST_inter ST_prep ST_verb SG_inter SG_intra \
               MG 

#reFormat txt-deformat html-deformat rtf-deformat



#
#reFormat_SOURCES = reFormat.C data_manager.C XML_reader.C simpleregex.C
#reFormat_LDADD = -lpcre -lxml2
#
#txt_deformat_SOURCES = txt-deformat.C
#html_deformat_SOURCES = html-deformat.C
#rtf_deformat_SOURCES = rtf-deformat.C
#
#txt-deformat.C: txt-format.xml Makefile.am deformat.xsl
#	$(XSLTPROC) --stringparam mode matxin deformat.xsl txt-format.xml | $(FLEX) -Cfer -t >$@
#
#html-deformat.C: html-format.xml Makefile.am deformat.xsl
#	$(XSLTPROC) --stringparam mode matxin deformat.xsl html-format.xml | $(FLEX) -Cfer -t >$@
#
#rtf-deformat.C: rtf-format.xml Makefile.am deformat.xsl
#	$(XSLTPROC) --stringparam mode matxin deformat.xsl rtf-format.xml | $(FLEX) -Cfer -t >$@
#

Then in the file configure.ac, change 

AC_CHECK_LIB(lttoolbox-2.0, main, [], [AC_MSG_ERROR([library 'lttoolbox' is required for Matxin])])

for 

PKG_CHECK_MODULES(MATXIN, [lttoolbox-2.0 >= 2.0.0],,exit)

CFLAGS="$CFLAGS $MATXIN_CFLAGS"
CPPFLAGS="$CPPFLAGS $MATXIN_CPPFLAGS"
LIBS="$LIBS $MATXIN_LIBS"

Then you need to comment out the check for gcc version in configure.ac 

#
# GCC version check
#
#AC_MSG_CHECKING(for GCC version)
#gccver=`$CXX -dumpversion`
#AC_MSG_RESULT($gccver);
#case "$gccver" in
#  4.3*)
#    AC_MSG_ERROR([GCC version must be <= 4.2])
#esac
#

Then do: 

$ aclocal; automake -a; autoconf
$ LTTOOLBOX_DIR=<prefix> LDFLAGS="-L<prefix>/lib -L/usr/lib" 
CPPFLAGS="-I<prefix>/include" ./configure --prefix=<prefix>

You will probably need to fix a few things in the file: src/Makefile to get it to build, for example add: 

DEFAULT_INCLUDES = -I. -I$(srcdir) -I/usr/include/libxml2
CPPFLAGS = -I<prefix>/include/lttoolbox-2.0 -I<prefix>/include

Executing

$ export MATXIN_DIR=<prefix>
$ echo "Esto es una prueba" |  \
./Analyzer -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./LT -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./ST_inter --inter 1 -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./ST_prep -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./ST_inter --inter 2 -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./ST_verb   -f $MATXIN_DIR/share/matxin/config/es-eu.cfg  | \
./ST_inter --inter 3 -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./SG_inter -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./SG_intra -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./MG -f $MATXIN_DIR/share/matxin/config/es-eu.cfg | \
./reFormat

Da proba bat hau

Speed

Between 25--30 words per second.

Troubleshooting

libfries

If you get the error to do with "strlen was not declared in this scope", add #include <string.h> to the file src/include/fries/language.h.

If you get the error to do with "set_union was not declared in this scope", add #include <algorithm> to the file src/libfries/RGF.cc.

Sometimes, people get the error: 

configure:2668: error: C++ compiler cannot create executables

Try installing libpcre3-dev and trying again.

libomlet

If you get the error to do with "exit was not declared in this scope", add #include <stdlib.h> to the file src/libomlet/adaboost.cc.

FreeLing

If you get the error to do with "exit was not declared in this scope", add #include <stdlib.h> to the files src/utilities/indexdict.cc, src/libmorfo/accents.cc, src/libmorfo/accents_modules.cc, src/libmorfo/dictionary.cc, src/libmorfo/tagger.cc, src/libmorfo/punts.cc, src/libmorfo/maco_options.cc, src/libmorfo/splitter.cc src/libmorfo/suffixes.cc src/libmorfo/senses.cc src/libmorfo/hmm_tagger.cc.

If you get the error to do with "strlen was not declared in this scope", add #include <string.h> to the files src/libmorfo/automat.cc, src/libmorfo/dates.cc, src/libmorfo/locutions.cc, src/libmorfo/maco.cc, src/libmorfo/np.cc, src/libmorfo/nec.cc, src/libmorfo/numbers.cc, src/libmorfo/numbers_modules.cc, src/libmorfo/quantities.cc, src/libmorfo/tokenizer.cc and src/libmorfo/dates_modules.cc.

If you get the error to do with "memcpy was not declared in this scope", add #include <string.h> to the files src/include/traces.h, src/libmorfo/dictionary.cc, src/libmorfo/traces.cc src/libmorfo/senses.cc, src/libmorfo/feature_extractor/fex.cc

If you get the error to do with "set_union was not declared in this scope", add #include <algorithm> to the file src/libmorfo/feature_extractor/RGF.cc.

If you get the error: 

In file included from analyzer.cc:72:
config.h:32:18: error: cfg+.h: No such file or directory

Run make like make CXXFLAGS=-I<prefix>/include

Matxin

If you get the error: 

g++ -DHAVE_CONFIG_H -I. -I..   -I/usr/local/include -I/usr/local/include/lttoolbox-2.0 -I/usr/include/libxml2  -g -O2 -ansi -march=i686 -O3 
-fno-pic              -fomit-frame-pointer -MT Analyzer.o -MD -MP -MF .deps/Analyzer.Tpo -c -o Analyzer.o Analyzer.C

--->Analyzer.C:10:22: error: freeling.h: Datei oder Verzeichnis nicht gefunden
 In file included from Analyzer.C:9:
 config.h: In constructor 'config::config(char**)':
 config.h:413: warning: deprecated conversion from string constant to 'char*'
 Analyzer.C: In function 'void PrintResults(std::list<sentence, std::allocator<sentence> >&, const config&, int&)':
 Analyzer.C:123: error: aggregate 'std::ofstream log_file' has incomplete type and cannot be defined
 Analyzer.C:126: error: incomplete type 'std::ofstream' used in nested name s...

Then change the header files in src/Analyzer.C to: 

//#include "freeling.h"

#include "util.h"
#include "tokenizer.h"
#include "splitter.h"
#include "maco.h"
#include "nec.h"
#include "senses.h"
#include "tagger.h"
#include "hmm_tagger.h"
#include "relax_tagger.h"
#include "chart_parser.h"
#include "maco_options.h"
#include "dependencies.h"

Upon finding yourself battling the following compile problem, 

Analyzer.C: In function ‘int main(int, char**)’:
Analyzer.C:226: error: no matching function for call to ‘hmm_tagger::hmm_tagger(std::string, char*&, int&, int&)’
/home/fran/local/include/hmm_tagger.h:108: note: candidates are: hmm_tagger::hmm_tagger(const std::string&, const std::string&, bool)
/home/fran/local/include/hmm_tagger.h:84: note:                 hmm_tagger::hmm_tagger(const hmm_tagger&)
Analyzer.C:230: error: no matching function for call to ‘relax_tagger::relax_tagger(char*&, int&, double&, double&, int&, int&)’
/home/fran/local/include/relax_tagger.h:74: note: candidates are: relax_tagger::relax_tagger(const std::string&, int, double, double, bool)
/home/fran/local/include/relax_tagger.h:51: note:                 relax_tagger::relax_tagger(const relax_tagger&)
Analyzer.C:236: error: no matching function for call to ‘senses::senses(char*&, int&)’
/home/fran/local/include/senses.h:52: note: candidates are: senses::senses(const std::string&)
/home/fran/local/include/senses.h:45: note:                 senses::senses(const senses&)

Make the following changes in the file src/Analyzer.C: 

   if (cfg.TAGGER_which == HMM)
-    tagger = new hmm_tagger(cfg.Lang, cfg.TAGGER_HMMFile, cfg.TAGGER_Retokenize, cfg.TAGGER_ForceSelect);
+    tagger = new hmm_tagger(string(cfg.Lang), string(cfg.TAGGER_HMMFile), false);
   else if (cfg.TAGGER_which == RELAX)
-    tagger = new relax_tagger(cfg.TAGGER_RelaxFile, cfg.TAGGER_RelaxMaxIter, 
+    tagger = new relax_tagger(string(cfg.TAGGER_RelaxFile), cfg.TAGGER_RelaxMaxIter,
 			      cfg.TAGGER_RelaxScaleFactor, cfg.TAGGER_RelaxEpsilon,
-			      cfg.TAGGER_Retokenize, cfg.TAGGER_ForceSelect); 
+			      false); 
 
   if (cfg.NEC_NEClassification)
     neclass = new nec("NP", cfg.NEC_FilePrefix);
 
   if (cfg.SENSE_SenseAnnotation!=NONE)
-    sens = new senses(cfg.SENSE_SenseFile, cfg.SENSE_DuplicateAnalysis);
+    sens = new senses(string(cfg.SENSE_SenseFile)); //, cfg.SENSE_DuplicateAnalysis);

Then probably there will be issues with actually running Matxin.

If you get this error: 

$ echo "Esto es una prueba" | ./Analyzer -f /home/fran/local/share/matxin/config/es-eu.cfg 
Constraint Grammar '/home/fran/local//share/matxin/freeling/es/constr_gram.dat'. Line 2. Syntax error: Unexpected 'SETS' found.
Constraint Grammar '/home/fran/local//share/matxin/freeling/es/constr_gram.dat'. Line 7. Syntax error: Unexpected 'DetFem' found.
Constraint Grammar '/home/fran/local//share/matxin/freeling/es/constr_gram.dat'. Line 10. Syntax error: Unexpected 'VerbPron' found.

You can change the tagger from the RelaxCG to HMM, edit the file <prefix>/share/matxin/config/es-eu.cfg, and change: 

#### Tagger options
#Tagger=relax
Tagger=hmm

Then there might be a problem in the dependency grammar: 

$ echo "Esto es una prueba" | ./Analyzer -f /home/fran/local/share/matxin/config/es-eu.cfg 
DEPENDENCIES: Error reading dependencies from '/home/fran/local//share/matxin/freeling/es/dep/dependences.dat'. Unregistered function d:sn.tonto

The easiest thing to do here is to just remove references to the stuff it complains about: 

cat <prefix>/share/matxin/freeling/es/dep/dependences.dat | grep -v d:grup-sp.lemma > newdep
cat newdep | grep -v d\.class > newdep2
cat newdep2 | grep -v d:sn.tonto > <prefix>/share/matxin/freeling/es/dep/dependences.dat

Documentation

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