scoring doc by readability

gistfile1.java

double readabilityMean = 0.0;
if (readabilityText != null){
    BasicDBObject readabilityScoresObj =  new BasicDBObject();
    readabilityScoresObj.put("text", readabilityText);
        			
    BagOfReadabilityObjects readabilityStats = new Readability(readabilityText).getMetrics();        			
    double normalizedFlesch = (100 - Math.abs(readabilityStats.getFleschReading() - 50))/100;
    double normalizedFleschKincaid = (16 - Math.abs(readabilityStats.getFleschReading() - 13))/16;
    double normalizedARI = (16 - Math.abs(readabilityStats.getARI() - 13))/16;
    double normalizedLiau = (16 - Math.abs(readabilityStats.getColemanLiau() - 13))/16;
    double normalizedGunning = (16 - Math.abs(readabilityStats.getGunningFog() - 12))/16;
    double normalizedSMOG = (16 - Math.abs(readabilityStats.getSMOGIndex() - 12))/16;
        			
    readabilityMean = (normalizedFlesch + normalizedFleschKincaid + normalizedARI+ normalizedLiau + normalizedGunning + normalizedSMOG)/6;
    readabilityScoresObj.put("mean", Double.valueOf(new DecimalFormat("#.####").format(readabilityMean)));
    dbObj.put("readability", readabilityScoresObj);
}