Using NLTK in Java

[hussainsaiger@gmail.com]

I am trying to convert a python module (that contains the use of
NLTK.Corpus) by jythonc. It is not able to include nltk dependencies
within the java class it creates. So when i use this class in java, it
fails to recognize nltk. Can anyone please let me know how should i
use nltk in python/jython modules so i can use in Java.

[Diez B. Roggisch]

Re: Using NLTK in Java

hussainsaiger@g mail.com schrieb:

I am trying to convert a python module (that contains the use of
NLTK.Corpus) by jythonc. It is not able to include nltk dependencies
within the java class it creates. So when i use this class in java, it
fails to recognize nltk. Can anyone please let me know how should i
use nltk in python/jython modules so i can use in Java.

If there are any binary dependencies, you are out of luck. It won't
work. You would need to write a RPC-Server then, with technologies such
as XMLRPC or CORBA.

Diez

[hussainsaiger@gmail.com]

Re: Using NLTK in Java

On 1 Sep, 11:55, "Diez B. Roggisch" <de...@nospam.w eb.dewrote:

hussainsai...@g mail.com schrieb:
>

I am trying to convert a python module (that contains the use of
NLTK.Corpus) by jythonc. It is not able to include nltk dependencies
within the java class it creates. So when i use this class in java, it
fails to recognize nltk. Can anyone please let me know how should i
use nltk in python/jython modules so i can use in Java.

>
If there are any binary dependencies, you are out of luck. It won't
work. You would need to write a RPC-Server then, with technologies such
as XMLRPC or CORBA.
>
Diez

So does that mean that Jython does not support nltk uptil now. I ask
this because when I try to import nltk in Jython (which is assumed to
replace Python), i get the same error. Its just nltk that I am not
able to use. The rest of the jython functions and libraries work fine
within Java.

[Diez B. Roggisch]

Re: Using NLTK in Java

hussainsaiger@g mail.com wrote:

On 1 Sep, 11:55, "Diez B. Roggisch" <de...@nospam.w eb.dewrote:

>hussainsai...@ gmail.com schrieb:
>>

I am trying to convert a python module (that contains the use of
NLTK.Corpus) by jythonc. It is not able to include nltk dependencies
within the java class it creates. So when i use this class in java, it
fails to recognize nltk. Can anyone please let me know how should i
use nltk in python/jython modules so i can use in Java.

>>
>If there are any binary dependencies, you are out of luck. It won't
>work. You would need to write a RPC-Server then, with technologies such
>as XMLRPC or CORBA.
>>
>Diez

>
So does that mean that Jython does not support nltk uptil now. I ask
this because when I try to import nltk in Jython (which is assumed to
replace Python), i get the same error. Its just nltk that I am not
able to use. The rest of the jython functions and libraries work fine
within Java.

I don't know for sure - how about you post the error-message? Otherwise we
can't assess the problem.

Diez

[hussainsaiger@gmail.com]

Re: Using NLTK in Java

On 1 Sep, 16:21, "Diez B. Roggisch" <de...@nospam.w eb.dewrote:

hussainsai...@g mail.com wrote:

On 1 Sep, 11:55, "Diez B. Roggisch" <de...@nospam.w eb.dewrote:

hussainsai...@g mail.com schrieb:

>

I am trying to convert a python module (that contains the use of
NLTK.Corpus) by jythonc. It is not able to include nltk dependencies
within the java class it creates. So when i use this class in java, it
fails to recognize nltk. Can anyone please let me know how should i
use nltk in python/jython modules so i can use in Java.

>

If there are any binary dependencies, you are out of luck. It won't
work. You would need to write a RPC-Server then, with technologies such
as XMLRPC or CORBA.

>

Diez

>

So does that mean that Jython does not support nltk uptil now. I ask
this because when I try to import nltk in Jython (which is assumed to
replace Python), i get the same error. Its just nltk that I am not
able to use. The rest of the jython functions and libraries work fine
within Java.

>
I don't know for sure - how about you post the error-message? Otherwise we
can't assess the problem.
>
Diez- Hide quoted text -
>
- Show quoted text -

Hi,

What i did was create a python file as:

import nltk
from java.util import Random

class NLPPresentation (Random):
def nextDouble(self ):
return 1
def TagByBrown(self ,sent):
"@sig public String[] TagByBrown(Stri ng sent)"
brown_a = nltk.corpus.bro wn.tagged_sents (categories='a' )
bigram_tagger = nltk.BigramTagg er(brown_a, cutoff=0)
lst = bigram_tagger.t ag(sent.split() )
return lst

I processed the following code through jythonc compiler to form a JAR
file. I then imported this jar
file into java ide (Java Builder). I then wrote the following program
in java to access this python class:

import org.python.core .PyException;
import org.python.core .PyInteger;
import org.python.core .PyObject;
import org.python.util .PythonInterpre ter;
import java.util.Rando m;
import org.nltk.*;
import org.nltk.mallet .*;
public class SimpleEmbedded extends NLPPresentation {
public static void main(String[] args) throws PyException {
SimpleEmbedded so = new SimpleEmbedded( );
String s = "he is a boy";
so.Call(s);
}
public void Call(String s)
{
String[] arr = TagByBrown(s);
System.out.prin tln(arr[1]);
}
}

When i compile the above java code, i get the following error:

Exception in thread "main" Traceback (innermost last):
File "C:\jython2.2.1 \NLPPresentatio n.py", line 0, in main
ImportError: no module named nltk

Your comments are highly appreciated.

[bearophileHUGS@lycos.com]

Re: Using NLTK in Java

On Sep 1, 12:30 pm, hussainsai...@g mail.com:

>in Jython (which is assumed to replace Python),

I don't think so.

Bye,
bearophile