public Listener(String statusDir, String userDir) {
		this.statusDir = statusDir;
		this.userDir = userDir;
		
		//Create a recent tweets cache, starting with a corpus file 
		//containing select starting words and their count, 
		//and skipping stop words
		this.rtc = new RecentTweetCache("config/corpus.txt","config/stop_words.txt");
		
		this.corpcount = 0;
		
		//features.txt contains some common words seen 
		//in crime related tweets and their variants
		rtf = new RealTimeFeatures("config/features.txt");
	
		//Database writer to handle database inserts
		dbw = new DBWriter();
		
		//Stanford NER's classifier to detect location entities
		ner = new TweetNER("classifiers/all.3class.distsim.crf.ser.gz");
	}