Omorfi

OMorFi (Open Morphology of Finnish) is a computational morphology of Finnish written using HFST.

Requirements

You will need HFST installed, you can follow the instructions on the HFST page.

Download

The following commands will download and prepare the build for OMorFi.

$ svn co http://svn.gna.org/svn/omorfi/trunk omorfi
$ cd omorfi/
$ autoreconf -i 
$ ./configure --prefix=/home/fran/local
$ cd src/

Compilation

You need at least 1.5Gb RAM to compile Omorfi, or be willing to let your machine sit around trashing for some hours.

$ make

This will compile everything. If your machine has less than 2Gb RAM you might want to just compile the analyser:

$ make mor-omorfi.hwfst

This could take 10--30 minutes.

Key

Feature	Notes
KTN	Inflection class (the first 40 or so are for nouns, the next 30 or so for verbs)
KAV	Code (K) for consonant gradation (astevaihtelu (AV)). This is a letter from A to K or so.
PCP	VA participle is the VA participle, i.e., the present participle

Usage

After compiling, you can test it with the hfst-lookup program.

$ echo "kaikki ihmiset syntyvät vapaina ja tasavertaisina arvoltaan ja oikeuksiltaan ." |\
   sed 's/ /\n/g' | hfst-lookup src/mor-omorfi.hwfst

kaikki	[##]kaikki[POS=PRONOUN][NUM=SG][CASE=NOM][##]

ihmiset	[##]ihminen[POS=NOUN][KTN=38][NUM=PL][CASE=NOM,ACC][##]

syntyvät	[##]syntyä[POS=VERB][KTN=52][KAV=J][GEN=ACT][MOOD=INDV][TENSE=PRES][PRS=PL3][##]
syntyvät	[##]syntyä[POS=VERB][KTN=52][KAV=J][GEN=ACT][PCP=VA][CMP=POS][NUM=PL][CASE=NOM,ACC][##]

vapaina	[##]vapaa[POS=ADJECTIVE][KTN=17][CMP=POS][NUM=PL][CASE=ESS][##]

ja	[##]ja[POS=PARTICLE][##]
ja	[##]ja[POS=CONJUNCTION][##]

tasavertaisina	[##]tasavertainen[POS=ADJECTIVE][KTN=38][CMP=POS][NUM=PL][CASE=ESS][##]
tasavertaisina	[##]tasa[POS=NOUN][KTN=9][NUM=SG][CASE=NOM][#][?]vertainen[POS=ADJECTIVE][KTN=38][CMP=POS]
[NUM=PL][CASE=ESS][##]

arvoltaan	[##]arvo[POS=NOUN][KTN=1][NUM=SG][CASE=ABL][POSS=SG3,PL3][##]

ja	[##]ja[POS=PARTICLE][##]
ja	[##]ja[POS=CONJUNCTION][##]

oikeuksiltaan	[##]oikeus[POS=NOUN][KTN=40][NUM=PL][CASE=ABL][POSS=SG3,PL3][##]

.	[##].[POS=PUNCTUATION][##]

To get the output to something approaching Apertium:

echo "kaikki ihmiset syntyvät vapaina ja tasavertaisina arvoltaan ja oikeuksiltaan." |\
  sed 's/$/¶/g' | sed 's/\W/\n&\n/g' | grep -v '^ $' | hfst-lookup src/mor-omorfi.hwfst |\
  python omorfi-to-apertium.py

^kaikki/kaikki<PRONOUN><SG><NOM>$ ^ihmiset/ihminen<NOUN><38><PL><NOM,ACC>$ 
^syntyvät/syntyä<VERB><52><J><ACT><INDV><PRES><PL3>/syntyä<VERB><52><J><ACT><VA><POS><PL><NOM,ACC>$
^vapaina/vapaa<ADJECTIVE><17><POS><PL><ESS>$ ^ja/ja<PARTICLE>/ja<CONJUNCTION>$ 
^tasavertaisina/tasavertainen<ADJECTIVE><38><POS><PL><ESS>/tasa<NOUN><9><SG><NOM>+vertainen<ADJECTIVE><38><POS><PL><ESS>$ 
^arvoltaan/arvo<NOUN><1><SG><ABL><SG3,PL3>$ ^ja/ja<PARTICLE>/ja<CONJUNCTION>$ 
^oikeuksiltaan/oikeus<NOUN><40><PL><ABL><SG3,PL3>$ ^./.<PUNCTUATION>$ 

The omorfi-to-apertium.py script can be found here and can also be run with the -c option to use the in-file tag conversion table.

$ echo "kaikki ihmiset syntyvät vapaina ja tasavertaisina arvoltaan ja oikeuksiltaan." |\
   sed 's/$/¶/g' | sed 's/\W/\n&\n/g' | grep -v '^ $' | hfst-lookup src/mor-omorfi.hwfst |\
   python omorfi-to-apertium.py -c

^kaikki/kaikki<Pron><Sg><Nom>$ ^ihmiset/ihminen<N><38><Pl><NOM,ACC>$ 
^syntyvät/syntyä<V><52><J><Act><Indv><Pres><PL3>/syntyä<V><52><J><Act><VA><Pos><Pl><NOM,ACC>$ 
^vapaina/vapaa<A><17><Pos><Pl><Ess>$ ^ja/ja<Part>/ja<Conj>$ 
^tasavertaisina/tasavertainen<A><38><Pos><Pl><Ess>/tasa<N><9><Sg><Nom>+vertainen<A><38><Pos><Pl><Ess>$ 
^arvoltaan/arvo<N><1><Sg><Abl><SG3,PL3>$ ^ja/ja<Part>/ja<Conj>$ ^oikeuksiltaan/oikeus<N><40><Pl><Abl><SG3,PL3>$ 
^./.<Punct>$ 

See also

• hfst
• foma

External links

• OMorFi: Installation
• Gna!: Omorfi
• Overview of the HFST project (pdf), esp. in relation to other FST technology