public ArrayList<String> getFeatureNames() {
		ArrayList<String> ret = new ArrayList<String>();
		ArrayList<String> sfns = new ArrayList<String>(socialFeatureNames);
		ArrayList<String> fns = new ArrayList<String>(featureNames);
		ret.addAll(sfns);
		ret.addAll(fns);
		ret.add("from_police_dept");
		ret.add("recent_gps");
		ret.add("recent_text");
		ret.add("class");
		return ret;
	}