text-hr 0.17

Morphological/Inflection Engine for Croatian language, POS tagger, stopwords
text-hr is Morphological/Inflection Engine for Croatian language written in Python programming language. Includes stopwords and Part-Of-Speech tagging engine (POS tagging) based on inverse inflection algorithm for detection.

Since API is not still freezed, this project is still in alpha.

TAGS

 Croatian language, python, natural language processing (NLP), Part-of-speech (POS) tagging, stopwords, inverse inflection, morphological lexicon

FEATURES

To name the most important are:

 * inflection system - for producing all forms of one word
 * detection of word types (POS tagging) - from existing list of word forms
 * list of stopwords

System is based on unicode strings, default codepage to convert from and to string is cp-1250.

Check Getting started.

INSTALLATION

Installation instructions - if you have installed pip package http://pypi.python.org/pypi/pip:

pip install text-hr

If not, then old-fashioned way:

 * download zip from http://pypi.python.org/pypi/text-hr/
 * unzip
 * open shell
 * go to distribution directory
 * python setup.py install

GETTING STARTED

There are three important parts that this project provides:

 * Inflection system - for producing all forms of one word
 * Detection of word types (POS tagging) - from existing list of word forms
 * List of stopwords

Inflection system

Usage example - start python shell:

> python
>>> from text_hr.verbs import Verb
>>> v = Verb("platiti")
>>> for k in sorted(v.forms.keys()):
... print k, v.forms[k]
...
AOR/P/1 [u'platismo']
AOR/P/2 [u'platiste']
AOR/P/3 [u'plati\u0161e']
AOR/S/1 [u'platih']
AOR/S/2 [u'plati']
AOR/S/3 [u'plati']
IMP/P/1 [u'platasmo', u'pla\u0107asmo', u'platijasmo']
IMP/P/2 [u'plataste', u'pla\u0107aste', u'platijaste']
IMP/P/3 [u'platahu', u'pla\u0107ahu', u'platijahu']
...
VA_PA//P_O+S+V+N [u'pla\u0107eno']
X_INF// [u'platiti']
X_VAD_PAS// [u'plativ\u0161i']
X_VAD_PRE// [u'plate\u0107i']
X_VAD_PRE// [u'plate\u0107i']


Detection of word types (POS tagging)

TODO: to be done - check test_detect.txt for samples, and detect.py for the logic:

first example in test_detect.txt:

>>> from text_hr.detect import WordTypeRecognizerExample
>>> def test_it(word_list, word_types_filter=None, level=2):
... wdh = WordTypeRecognizerExample(word_list, silent=True)
... if not word_types_filter is None:
... wdh.detect(word_types_filter=word_types_filter, level=level) # e.g. word_types_filter=["N"]
... else:
... wdh.detect(level=level) # all word types
... lines_file = LinesFile()
... wdh.dump_result(lines_file) # doctest: +NORMALIZE_WHITESPACE +ELLIPSIS
... print "\n".join(lines_file.lines)
... return wdh

>>> class LinesFile(object):
... def __init__(self):
... self.lines = []
... def write(self, s):
... self.lines.append(repr(s.rstrip()))

>>> word_list = [
... "Broj 84"
... , "broji 34"
... , "Brojila 28"
... , "broje 23"
... , "brojeći 22"
... , "brojim 7"
... , "brojimo 5"
... , "brojiš 4"
... , "brojahu 2"
... , "brojaše 1"
... , "brojite 1"
... , "-brijestovu 1"
... , "brijestovi 1" #the only one checked with endswith, but all other will be checked with get_freq
... , "-brijestove 1"
... , "-brijestova 1"
... ]

Lowest quality, but fastest
>>> wdh = test_it(word_list, level=4) # doctest: +ELLIPSIS
" 10/ 183 -> brojati (u'V-XX_-_JATI-je\\u0107i-0') 84/broj,34/broji,23/broje,22/broje\xe6i,7/brojim,5/brojimo,4/broji\x9a,2/brojahu,1/brojite,1/broja\x9ae"


List of stopwords

TODO: to be simplified and explained in details. this is not tested.

Something like:

from text_hr import word_types

word_types_list = None
for wordobj, l_key, cnt, _suff_id, wform_key, wform in word_types.get_all_std_words(word_types_list):
 if not (wordobj==wordobj_old and l_key==l_key_old):
 wordobj_data["value_base"] = wordobj
 l_key_flds = l_key.split("#")
 # wordobj l_key wform_key form
 # ondje FX#ADV#MJE.GDJE ''
 # one CH#PRON.OSO# #P/3F#|A#1 'njih'
 assert len(l_key_flds)==3, l_key_flds
 is_changeable = (l_key_flds[0]=="CH")
 print "word_type", l_key_flds[1]
 print "subtype", l_key_flds[2]

 assert wordobj_obj
 # TODO:
 # if wform:
 # raise NotImplementedError("now wordforms don't hold wf/key, but wf/cnt - it is reduced. Here this is not implemented!!!")


Further

Since there is currently no good documentation, the best source of further information is by reading tests inside of modules and tests in tests directory (dev version). More information in Running tests. And you can allways read a source.

DOCUMENTATION

Sorry but currently there is no good documentation. In progress ...

SUPPORT

Since this project is limited with my free time, support will be limited.

REPORT BUG OR REQUEST FEATURE

If you encounter bug, the best is to report it to bitbucket web page http://bitbucket.org/trebor74hr/text-hr.

If there will be an interest for development for other inflection rich languages, I'd be glad to decouple language specific code and create new project that will be capable to deal with multiple languages.

The best way to contact me is by mail (find in LICENCE).

TODO list is in readme.txt (dev version).

CONTRIBUTION

Since this project is not currently in the stable API phase, contribution should wait for a while.

RUNNING TESTS

All tests are doctests (not unittests). There are three type of tests in the package:

 1. doctests in each module - e.g. in verbs.py
 2. doctests in tests/test_*.txt - only development version
 3. tests which are not automatically compared - i.e. in special call mode detect.py can produce output file which needs to be compared manually with some existing file. Such test(s) are very slow. This needs to be changed to be automatic.

Running each module directly will run 1. and 2. if running from development version. To get development version To use development version (http://bitbucket.org/trebor74hr/text-hr):

hg clone https://trebor74hr@bitbucket.org/trebor74hr/text-hr

create text_hr.pth in python site-packages directory with path to text-hr e.g.:

r:\hg-clones\python\text-hr

To run all tests:

 * go to tests directory
 * run tests.py like (with sample output):

 > python tests.py
 testing module __init__
 testing module adjectives
 ...
 testing module word_types
 testing textfile R:\hg-clones\python\text-hr\tests\test_adj.txt
 ...
 testing textfile R:\hg-clones\python\text-hr\tests\test_verbs_type.txt


To run tests for just one module:

 * goto text_hr directory
 * run tests by running module, e.g.:

 > py pronouns.py
 __main__: running doctests
 ..\tests\test_pronouns.txt: running doctests


 * in the case you're not running from dev version, you'll get output like this:

 > py pronouns.py
 __main__: running doctests
 ..\tests\test_pronouns.txt: Not found, skipping

last updated on:
July 10th, 2010, 1:30 GMT
price:
FREE!
homepage:
bitbucket.org
license type:
BSD License 
developed by:
Robert Lujo
category:
ROOT \ Text Editing&Processing \ Indexing
text-hr
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What's New in This Release:
  • utf-8 setup
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