} else if (selector.equalsIgnoreCase("MI")) {
filter = new MutualInformation();
} else if (selector.equalsIgnoreCase("IG")) {
filter = new InformationGain();
} else if (selector.equalsIgnoreCase("CHI")) {
filter = new ChiSquare();
} else if (selector.equalsIgnoreCase("OR")) {
filter = new OddsRatio();
} else if (selector.equalsIgnoreCase("RS")) {
filter = new RelevancyScore();
} else