public void normalize() {
for (int i = 0; i < samples.size(); i++) {
TreeSet<Column.Entry> entries = new TreeSet<Column.Entry>();
for (int j = 0; j < cols.size(); j++) {
Column c = cols.get(j);
if (c.values.get(i) != null) {
entries.add(c.entry(i));
}
}
int ns = entries.size();
int j = 0;
for (Column.Entry e : entries) {
int cidx = ids.get(e.id());
float ff = (float) j / (float) ns;
cols.get(cidx).values.set(i, ff);
}
if (i > 0) {
if (i % 100 == 0) {
System.out.print(".");
System.out.flush();
}
}
}
System.out.println();
}
