Agfdhyk

I use Python 3.6 on Azure Jupyter notebooks on a win8.1 64x for my NLP projects. I was trying to install the Stanford NER Tagger. I downloaded java and all three components

1) stanford-ner-2015-12-09,
2) stanford-parser-full-2018-10-17,
3) stanford-postagger-2015-12-09,

and uploaded these three to my directory on Azure Jupyter notebooks. To test the Stanford NER Tagger, I ran the following codes as suggested on https://pythonprogramming.net/named-entity-recognition-stanford-ner-tagger/

# -*- coding: utf-8 -*-



from nltk.tag import StanfordNERTagger

from nltk.tokenize import word_tokenize



st = StanfordNERTagger('/usr/share/stanford-ner/classifiers/english.all.3class.distsim.crf.ser.gz',

                       '/usr/share/stanford-ner/stanford-ner.jar',

                       encoding='utf-8')



text = 'While in France, Christine Lagarde discussed short-term stimulus efforts in a recent interview with the Wall Street Journal.'



tokenized_text = word_tokenize(text)

classified_text = st.tag(tokenized_text)



print(classified_text)

but I received the below Lookup Error, which basically suggests setting variable on CLASSPATH. I installed many packages on Azure Jupyter notebooks before but this is the first time asked to set CLASSPATH environment. I went thru the available documents online but unfortunately nobody addressed this issue for Azure Jupyter environment so far. I appreciate your help.

---------------------------------------------------------------------------

LookupError                               Traceback (most recent call last)

<ipython-input-7-b3696afa5972> in <module>

      4 from nltk.tokenize import word_tokenize

      5 

----> 6 st = StanfordNERTagger('stanford-ner.jar',encoding='utf-8')

      7 

      8 text = 'While in France, Christine Lagarde discussed short-term stimulus efforts in a recent interview with the Wall Street Journal.'



~/anaconda3_501/lib/python3.6/site-packages/nltk/tag/stanford.py in __init__(self, *args, **kwargs)

    178 

    179     def __init__(self, *args, **kwargs):

--> 180         super(StanfordNERTagger, self).__init__(*args, **kwargs)

    181 

    182     @property



~/anaconda3_501/lib/python3.6/site-packages/nltk/tag/stanford.py in __init__(self, model_filename, path_to_jar, encoding, verbose, java_options)

     61                 self._JAR, path_to_jar,

     62                 searchpath=(), url=_stanford_url,

---> 63                 verbose=verbose)

     64 

     65         self._stanford_model = find_file(model_filename,



~/anaconda3_501/lib/python3.6/site-packages/nltk/__init__.py in find_jar(name_pattern, path_to_jar, env_vars, searchpath, url, verbose, is_regex)

    719         searchpath=(), url=None, verbose=False, is_regex=False):

    720     return next(find_jar_iter(name_pattern, path_to_jar, env_vars,

--> 721                          searchpath, url, verbose, is_regex))

    722 

    723 



~/anaconda3_501/lib/python3.6/site-packages/nltk/__init__.py in find_jar_iter(name_pattern, path_to_jar, env_vars, searchpath, url, verbose, is_regex)

    714                     (name_pattern, url))

    715         div = '='*75

--> 716         raise LookupError('nn%sn%sn%s' % (div, msg, div))

    717 

    718 def find_jar(name_pattern, path_to_jar=None, env_vars=(),



LookupError: 



===========================================================================

  NLTK was unable to find stanford-ner.jar! Set the CLASSPATH

  environment variable.



  For more information, on stanford-ner.jar, see:

    <https://nlp.stanford.edu/software>