Difference between revisions of "Analysing Finnish text"

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#redirect[[Finnish]]
{{TOCD}}

==Installation==

First make a directory called something like "source" in your home directory. The commands below assume you start in that directory.

===Install SFST===

Note: you might have to uncomment the FPIC line in Makefile, in order to avoid a relocation error in sudo make libinstall.

<pre>
$ sudo apt-get install libreadline5-dev
$ wget ftp://ftp.ims.uni-stuttgart.de/pub/corpora/SFST/SFST-1.4.6a.tar.gz
$ tar -xzvf SFST-1.4.6a.tar.gz
$ cd SFST/src
$ make
$ sudo make install
$ sudo make libinstall
$ cd ..
</pre>

===Install OpenFST===

<pre>
$ wget http://openfst.cs.nyu.edu/twiki/pub/FST/FstDownload/openfst-1.2.6.tar.gz
$ tar -xzvf openfst-1.2.6.tar.gz
$ cd openfst-1.2.6/
$ ./configure
$ make
$ sudo make install
$ cd ..
</pre>

===Install HFST===
<!--
<pre>
$ svn co https://hfst.svn.sourceforge.net/svnroot/hfst/trunk hfst
$ cd hfst/hfst3
$ sh autogen.sh
$ ./configure --without-foma
$ make
$ sudo make install
$ cd ..
</pre>
-->

<pre>
$ wget http://downloads.sourceforge.net/project/hfst/hfst/hfst-2.4.1.tar.gz
$ tar -xzvf hfst-2.4.1.tar.gz
$ cd hfst-2.4.1/
$ ./configure
$ make
$ sudo make install
$ cd ..
</pre>

===Install Omorfi===

<pre>
$ svn co http://svn.gna.org/svn/omorfi/trunk omorfi
$ cd omorfi
$ sh autogen.sh
$ ./configure
$ make
$ sudo make install
$ cd ..
</pre>

===Install VISLCG===

Some hints can be found here:
* [http://giellatekno.uit.no/doc/tools/docu-vislcg3.html Giellatekno's vislcg3 installation page]
* [http://giellatekno.uit.no/doc/tools/cg3-usage.html Giellatekno's vislcg3 usage page]

The main vislcg3 page is at [http://beta.visl.sdu.dk/cg3.html http://beta.visl.sdu.dk/cg3.html].

==Usage==

===Morphological analysis===

====Testing====

<pre>
$ cd omorfi/src
$ echo "auton" | hfst-optimized-lookup mor-omorfi.cg.hfst.ol
auton auto+N+Sg+Gen
$ echo "autojen" | hfst-optimized-lookup mor-omorfi.cg.hfst.ol
autojen auto+N+Pl+Gen

</pre>

===Morphological disambiguation===

The analysis chain is as follows:

# take text
# preprocess: change it to one token per line (with proper punctuation handling)
# morphological analysis
# change it from omorfi output to vislcg3 input
# run it through vislcg3

In the following, apertium-style example, points 2, 3, 4 above have been included in one operation, ''hfst-proc''. In [http://giellatekno.uit.no/doc/tools/docu-sme-manual.html the Giellatekno environment] they are run separately. The command below is run with the ''--trace'' option, giving the type (MAP, REMOVE, etc.) and line number in the cg file (here ''apertium-sme-fin.fin-sme.rlx'', cf. the message ''MAP:2859'', indicating that the addition of @+FMAINV tag is done with a mapping rule on line 2859). Running the same command but without the ''--trace'' option will give a clean output., but with less info.

<pre>
$ echo "Alussa loi Jumala taivaan ja maan." | hfst-proc -C fin-sme.automorf.hfst | vislcg3 --trace -g apertium-sme-fin.fin-sme.rlx
VISL CG-3 Disambiguator version 0.9.7.6378
Codepage: default UTF-8, input UTF-8, output UTF-8, grammar UTF-8
Parsing grammar took 0.06 seconds.
Grammar has 6 sections, 0 templates, 1379 rules, 1312 sets, 748 c-tags, 1299 s-tags.
"<Alussa>"
"alku" N Sg Ine
"<loi>"
"luoda" V Act Ind Prt Sg3 @+FMAINV MAP:2859
"<Jumala>"
"Jumala" N Prop Sg Nom @→N MAP:2694
"jumala" N Sg Nom @→N MAP:2694
"<taivaan>"
"taivas" N Sg Gen @→N MAP:2680
"<ja>"
"ja" CC @CNP MAP:2651
; "ja" Pcle REMOVE:820
"<maan>"
"maa" N Sg Gen @←OBJ MAP:2785
"<.>"
"." Punct CLB ADD:793


</pre>

[[Category:Documentation]]
[[Category:Documentation in English]]
[[Category:Finnish]]

Latest revision as of 19:33, 18 April 2017

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