private boolean isDataBetter(float[][][] tech, int id, int i) {

		float[] technicals = TECHNICAL_PRICE_DATA.get(dbSet.get(id)).get(
				tech[id][i][0]);
		if (technicals == null)
			return true;
		int ok_old = 0;
		for (float f : technicals)
			if (f == f)
				ok_old++;

		int ok_new = 0;
		for (float f : tech[id][i])
			if (f == f)
				ok_new++;

		return (ok_new > ok_old);

	}