private static FastVector createTweetAttributes(){
    	String[] classificationValues = {"reliefph" , "rescueph", "safenow", "floodph", "tracingph", "yolandaph"};
    	
    
        // Declare the class attribute along with its values
        FastVector fvClassVal = new FastVector(classificationValues.length);
        for(String classification: classificationValues)
        	fvClassVal.addElement(classification);
        Attribute classificationAttribute = new Attribute("theClass", fvClassVal);
         
    	// Text attribute of the tweet (content)
        Attribute textAttribute = new Attribute("text", (FastVector)null);

        // Declare the feature vector
        FastVector attributes = new FastVector(2);
        attributes.addElement(classificationAttribute);    
        attributes.addElement(textAttribute);    
        
        return attributes;
    }