Frog for Python
This is a Python binding to the Natural Language Processing suite Frog. Frog is intended for Dutch and performs part-of-speech tagging, lemmatisation, morphological analysis, named entity recognition, shallow parsing, and dependency parsing. The tool itseelf is implemented in C++ (http://ilk.uvt.nl/frog).
Installation
Easy
For easy installation, please use our LaMachine distribution
Manual
- Make sure to first install Frog and all its dependencies
- Install Cython if not yet available on your system:
$ sudo apt-get cython cython3(Debian/Ubuntu, may differ for others) - Run:
$ sudo python setup.py install
Usage
Example:
from __future__ import print_function, unicode_literals #to make this work on Python 2 as well as Python 3
import frog
frog = frog.Frog(frog.FrogOptions(parser=False))
output = frog.process_raw("Dit is een test")
print("RAW OUTPUT=",output)
output = frog.process("Dit is nog een test.")
print("PARSED OUTPUT=",output)
Output:
RAW OUTPUT= 1 Dit dit [dit] VNW(aanw,pron,stan,vol,3o,ev)
0.777085 O B-NP
2 is zijn [zijn] WW(pv,tgw,ev) 0.999891 O
B-VP
3 een een [een] LID(onbep,stan,agr) 0.999113 O
B-NP
4 test test [test] N(soort,ev,basis,zijd,stan) 0.789112
O I-NP
PARSED OUTPUT= [{'chunker': 'B-NP', 'index': '1', 'lemma': 'dit', 'ner':
'O', 'pos': 'VNW(aanw,pron,stan,vol,3o,ev)', 'posprob': 0.777085, 'text':
'Dit', 'morph': '[dit]'}, {'chunker': 'B-VP', 'index': '2', 'lemma':
'zijn', 'ner': 'O', 'pos': 'WW(pv,tgw,ev)', 'posprob': 0.999966, 'text':
'is', 'morph': '[zijn]'}, {'chunker': 'B-NP', 'index': '3', 'lemma': 'nog',
'ner': 'O', 'pos': 'BW()', 'posprob': 0.99982, 'text': 'nog', 'morph':
'[nog]'}, {'chunker': 'I-NP', 'index': '4', 'lemma': 'een', 'ner': 'O',
'pos': 'LID(onbep,stan,agr)', 'posprob': 0.995781, 'text': 'een', 'morph':
'[een]'}, {'chunker': 'I-NP', 'index': '5', 'lemma': 'test', 'ner': 'O',
'pos': 'N(soort,ev,basis,zijd,stan)', 'posprob': 0.903055, 'text': 'test',
'morph': '[test]'}, {'chunker': 'O', 'index': '6', 'eos': True, 'lemma':
'.', 'ner': 'O', 'pos': 'LET()', 'posprob': 1.0, 'text': '.', 'morph':
'[.]'}]
Available keyword arguments for FrogOptions:
- tok - True/False - Do tokenisation? (default: True)
- lemma - True/False - Do lemmatisation? (default: True)
- morph - True/False - Do morpholigical analysis? (default: True)
- daringmorph - True/False - Do morphological analysis in new experimental style? (default: False)
- mwu - True/False - Do Multi Word Unit detection? (default: True)
- chunking - True/False - Do Chunking/Shallow parsing? (default: True)
- ner - True/False - Do Named Entity Recognition? (default: True)
- parser - True/False - Do Dependency Parsing? (default: False).
- xmlin - True/False - Input is FoLiA XML (default: False)
- xmlout - True/False - Output is FoLiA XML (default: False)
- docid - str - Document ID (for FoLiA)
- numThreads - int - Number of threads to use (default: unset, unlimited)
You can specify a Frog configuration file explicitly as second argument upon instantiation, otherwise the default one is used:
frog = frog.Frog(frog.FrogOptions(parser=False), "/path/to/your/frog.cfg")
A third parameter, a dictionary, can be used to override specific configuration values (same syntax as Frog's --override option), you may want to leave the second parameter empty if you want to load the default configuration:
frog = frog.Frog(frog.FrogOptions(parser=False), "", { "tokenizer.rulesFile": "tokconfig-nld-twitter" })
FoLiA support
Frog supports output in the FoLiA XML format (set FrogOptions(xmlout=True)), as well as FoLiA input (set FrogOptions(xmlin=True)). The FoLiA format exposes more details about the linguistic annotation in a more structured and more formal way.
Whenever FoLiA output is requested, the process() method will return an instance of folia.Document, which is provided by the FoLiApy library. This loads the entire FoLiA document in memory and allows you to inspect it in any way you see fit. Extensive documentation for this library can be found here: http://folia.readthedocs.io/
An example can be found below:
from frog import Frog, FrogOptions
frog = Frog(FrogOptions(parser=True,xmlout=True))
output = frog.process("Dit is een FoLiA test.")
#output is now no longer a string but an instance of folia.Document, provided by the FoLiA library in PyNLPl (pynlpl.formats.folia)
print("FOLIA OUTPUT AS RAW XML=")
print(output.xmlstring())
print("Inspecting FoLiA output (just a small example):")
for word in output.words():
print(word.text() + " " + word.pos() + " " + word.lemma())
Caused by example code:
Looks like the VM is not able to find the module at all, but I have no idea how it could.
Do you have any idea?
48 Dec 06, 2022
114 Nov 13, 2022
45 Oct 04, 2022
11 Nov 11, 2022
1.9k Jan 06, 2023
24 Nov 30, 2022
4 Aug 20, 2022
2 Feb 02, 2022
2 Jul 15, 2022
647 Dec 25, 2022
209 Dec 30, 2022
129 Dec 17, 2022
90 Dec 19, 2022
121 Dec 27, 2022
109 Dec 21, 2022
48 Nov 22, 2022
2 May 14, 2022
2.5k Jan 07, 2023
4 Feb 19, 2022