def create_system(number_labels=3, measures=100):
    """Create a syntetic experiment"""
    labels = np.arange(number_labels)

    # Create a vector with the real and computed labels
    real = np.random.choice(labels, size=measures)
    computed = np.random.choice(labels, size=measures)

    accumulator = {(i, j): 0 for i in number_labels for j in number_labels}
    for x, y in np.nditer((real, computed)):
        if (x == y):
            accumulator[(x, y)] += 1

    return accumulator