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您好,我是tensorflow上的新手我嘗試運行我寫的一個小函數。我已經重新啓動我的內核,這是我的腳本:爲什麼我得到這個錯誤:您必須爲dtype float提供佔位符張量'Placeholder_3'的值
import tensorflow as tf
def phi1 (x,B,w) :
x1 = tf.placeholder(tf.float32, [None, None])
W1 = tf.placeholder(tf.float32, [None, None])
B1 = tf.placeholder(tf.float32,[None])
phi = []
x2 = tf.add(x1,x)
W2 = tf.add(W1,w)
y = tf.matmul(x2,W2)
print(y.get_shape())
for i in range(3):
z1=tf.sin(y[i,:])*tf.transpose(B)
Z2=tf.cos(y[i,:])*tf.transpose(B)
z1= tf.cast(z1, tf.float32)
z2= tf.cast(Z2, tf.float32)
#print(type(z2))
phi.append(z1)
phi.append(z2)
y = phi
return y
x2 = tf.placeholder(tf.float32, [3, 1])
W2 = tf.placeholder(tf.float32, [1, 3])
b2 = tf.placeholder(tf.float32,[3])
y = phi1 (x2,b2,W2)
init = tf.initialize_all_variables()
with tf.Session() as sess:
sess.run(init)
z4_op = sess.run(y , feed_dict = {x2: [[1.0],[2.0],[3.0]], b2: [0.5, 2.0, 1.0], W2: [[1.0, 2.0, 3.0]]})
print(z4_op)
的錯誤是:
InvalidArgumentError: You must feed a value for placeholder tensor 'Placeholder_3' with dtype float
[[Node: Placeholder_3 = Placeholder[dtype=DT_FLOAT, shape=[], _device="/job:localhost/replica:0/task:0/cpu:0"]()]]
Caused by op 'Placeholder_3'
謝謝你的回答 –