public static void testBreakpointCalculation() {
double[] data = {13, 1.2, 2.2, 4.5, 12.005, 5.5, 10.1, 7.5, 3.4};
double[] breakpoints = Discretizer.getEqualFrequencyBreakPoints(data, 3);
assertTrue(breakpoints.length == 2);
assertEquals(4.5, breakpoints[0]);
assertEquals(10.1, breakpoints[1]);
Discretizer.Discretization dis =
Discretizer.discretize(data, breakpoints, "after", Arrays.asList("0", "1", "2"));
System.out.println(dis);
breakpoints = Discretizer.getEqualFrequencyBreakPoints(data, 4);
assertTrue(breakpoints.length == 3);
assertEquals(3.4, breakpoints[0]);
assertEquals(5.5, breakpoints[1]);
assertEquals(10.1, breakpoints[2]);
}
