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Thread: praser languege java

  1. #1
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    Default praser languege java

    Hi everybody I am new in java. i try to build the program for phrase-language-lexicon.
    this is Tree Builder:
    Probabilistic LFG Parser
    i need to write same output result in java program. I'v got two text file (lexicon.txt and rules.txt) . lexicon contains words and what those word means in grammar (man-none, bite-verb..etc) in rules file contains rules of position those words in sentience (np-n-v . vp-v ...etc) I need parsing the lexicon file and add it in vector , and parsing entered string from user and add it in vector. after matched above vectors elements for identification words from user-string after match with rules and identification position in sentence . give out print the result ,as in builder tree(s[np[n [man]] vp[v[likes]ad[a]] n[dog]]]. I complicate dump with matching vectors elements....
    i bee very appreciate if give me any way how can i do this , or simple examples , o link o same code ...
    sorry about my language (english is not my first)

    // Read in a String from the user
          //  create a parser to test it against
     
          //   check each word against the lexicon
          //   1. write out the part of speech
     
          // 2. Then check these parts of speech against
          // the rules
          //as in old example open file, read line from lexicon file and create lex
     
     
    SOME as:
     
    import java.util.StringTokenizer;
    import java.util.Vector;
    import java.io.BufferedReader;
    import java.io.FileReader;
     
    public class newtoken {
     
    	public static void main(String[] args) throws Exception 
    	{
    		Vector predlo =new Vector();
    		String s = "THE DOG BITES A MAN";
    		StringTokenizer st = new StringTokenizer(s, " \t\n\r,.");
              while (st.hasMoreTokens())
    	    	 {
                 predlo.add(st.nextToken());                                      
    		     }
                 System.out.println("Thi is a sentence"+predlo);
                    FileReader fr = new FileReader("lexicon.txt");
         		    BufferedReader br = new BufferedReader(fr);
                    String line4 = br.readLine();
         		while (line4!=null)
         		{
         			//System.out.println(line4);
         			String[] tr = line4.split("\\s");
         			for(int j=0; j<predlo.size(); j++)
                    if(predlo.elementAt(j).equals(tr[0]))
                    System.out.println(tr[1]+ " "+"["+predlo.elementAt(j)+"]");
     
                    line4 = br.readLine();
         		}
     
         	}
    	}
     
    output :Thi is a sentence[THE, DOG, BITES, A, MAN]
    a [A]
    v [BITES]
    n [MAN]
    n [DOG]
    d [THE]
     Now need to commpareTo  with Node class for praseOfSpeech...
     
    class Node{
     
        String pos;
             // np
     
        Node(String s){
    	  pos = s;
     
    	}
     
     
     
    	////////////////////////////////////////////////////
    	//
    	////////////////////////////////////////////////////
        private String getNode(){
    		   if (!checkPos())
    	      getNode();
    	      //getout/clause  pass a parameter in the next call
    	      // perform a 're-write'
     
    	   else
    	     return pos;  // only an entry that is in the PartsOfSpeech vector
    	                  //  may be returned here
        }
     
        ////////////////////////////////////////////////////
        //
        ////////////////////////////////////////////////////
        public boolean checkPos(){
    	   boolean flag = false;
     
    	   for(int i =0;i<POS.size();i++)            // Go through entire POS vector
    	      if (pos = (String)POS.elementAt(i))    // Check is it there
    		      flag = true;                       // if so, then return true
     
    	  return flag;
    	}
     
    }
    Last edited by helloworld922; November 13th, 2010 at 01:37 PM.


  2. #2
    Member Darryl.Burke's Avatar
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    Default Re: praser languege java

    A forum is not a do-my-homework service. Post your best efforts at tackling this and ask a specific question, and you're almost guaranteed to get help.

    Recommended reading: How To Ask Questions The Smart Way

    db