public RealTimeFeatures(String featureFileName)
	{
		try 
		{
			loadFeatureFile(featureFileName);
			policeIDs = storePolice(pdfile);
		} 
		catch (IOException e) {
			e.printStackTrace();
		}
		addWordsToSet();
		
		//status features
		socialFeatureNames.add("contributors");
		socialFeatureNames.add("retweet_count");
		socialFeatureNames.add("mentions");
		socialFeatureNames.add("hashtags");
		socialFeatureNames.add("urls");
		socialFeatureNames.add("favorited");
		socialFeatureNames.add("media_entities");

		//usr features
		socialFeatureNames.add("user_fav_count");
		socialFeatureNames.add("follower_count");
		socialFeatureNames.add("friend_count");
		socialFeatureNames.add("public_list_count");
		socialFeatureNames.add("status_count");
		socialFeatureNames.add("verified");
	}