public LinearModelWithSweep(ArrayList<ModelEffect> effects, double[] data) {
int numberOfEffects = effects.size();
this.data = data;
xtxmatrices = new DoubleMatrix2D[numberOfEffects][numberOfEffects];
xtymatrices = new DoubleMatrix2D[numberOfEffects][1];
for (int i = 0; i < numberOfEffects; i++) {
ModelEffect me = effects.get(i);
xtxmatrices[i][i] = me.getXTX();
xtymatrices[i][0] =
DoubleFactory2D.dense.make(me.getXTy(data).toArray(), me.getNumberOfLevels());
for (int j = 0; j < i; j++) {
xtxmatrices[i][j] = ModelEffect.getX1TX2(me, effects.get(j));
xtxmatrices[j][i] = xtxmatrices[i][j].viewDice();
}
}
sweep = new Sweep();
initialSweep();
}
