Function myr2

airline/rnn.py:22–26

(T, Y)

    return np.random.randn(M1, M2) / np.sqrt(M1 + M2)

def myr2(T, Y):
    Ym = T.mean()
    sse = (T - Y).dot(T - Y)
    sst = (T - Ym).dot(T - Ym)
    return 1 - sse / sst

class RNN(object):
    def __init__(self, hidden_layer_sizes):