用tensorflow预测10个数字的二维输出
我想从10个数字中预测一个数字 我想做的是从用tensorflow预测10个数字的二维输出,tensorflow,tensor,Tensorflow,Tensor,我想从10个数字中预测一个数字 我想做的是从mat 每个mat[i]都与t[i] 当然,我在mat和t中有超过5行,只是现在简化了问题 我已经写了下面这样的代码 #There is target data `t` and traindata `mat[0]`,`mat[1]`,`mat[2]`.... t = [0,1,0,1,0] #answer 2 dimension limit = 10# number of degrees mat = [[2,-2,3,-4,2,2,3,5,3,6]
mat
每个mat[i]
都与t[i]
当然,我在mat和t中有超过5行,只是现在简化了问题
我已经写了下面这样的代码
#There is target data `t` and traindata `mat[0]`,`mat[1]`,`mat[2]`....
t = [0,1,0,1,0] #answer 2 dimension
limit = 10# number of degrees
mat = [[2,-2,3,-4,2,2,3,5,3,6], #10 degrees number of mat[0] leads t[0]
[1,3,-3,2,2,5,1,3,2,3], #10 degrees number of mat[1] leads t[1]
[-2,3,2,-2,2,-2,1,3,4,5], #10 degrees number of mat[2] leads t[2]
[-2,2,-1,-2,2,-2,7,3,9,2], #10 degrees number of mat[3] leads t[3]
[-2,-3,2,-2,2,-4,1,-4,4,5], #10 degrees number of mat[4] leads t[4]
]
x = tf.placeholder(tf.float32,[None,10])
w = tf.Variable(tf.zeros([10,5]))
y = tf.matmul(x,w)
t = tf.placeholder(tf.float32,[None,1])
loss = tf.reduce_sum(tf.square(y-t))
train_step = tf.train.AdamOptimizer().minimize(loss)
sess = tf.Session()
sess.run(tf.initialize_all_variables())
train_t = np.array(mat)
train_t = train_t.reshape([limit,5])
train_x = np.zeros([limit,5])
# initialize
for row, num in enumerate(range(1,limit + 1)):
for col, n in enumerate(range(0,5)):
train_x[row][col] = num**n
i = 0
for _ in range(100000):
i += 1
sess.run(train_step,feed_dict={x:train_x,t:train_t})
if i % 10000 == 0:
loss_val = sess.run(loss,feed_dict={x:train_x,t:train_t})
print('step : %d,Loss: %f' % (i,loss_val))
w_val = sess.run(w)
pprint("w_val")
pprint(w_val)
然而,这显示了这样的错误
Traceback (most recent call last):
File "wisdom2.py", line 60, in <module>
sess.run(train_step,feed_dict={x:train_x,t:train_t})
File "/Users/whitebear/tensorflow/lib/python3.4/site-packages/tensorflow/python/client/session.py", line 789, in run
run_metadata_ptr)
File "/Users/whitebear/tensorflow/lib/python3.4/site-packages/tensorflow/python/client/session.py", line 975, in _run
% (np_val.shape, subfeed_t.name, str(subfeed_t.get_shape())))
ValueError: Cannot feed value of shape (10, 5) for Tensor 'Placeholder:0', which has shape '(?, 10)'
回溯(最近一次呼叫最后一次):
文件“wisdom2.py”,第60行,在
sess.run(train_step,feed_dict={x:train_x,t:train_t})
文件“/Users/whitebear/tensorflow/lib/python3.4/site packages/tensorflow/python/client/session.py”,第789行,正在运行
运行_元数据_ptr)
文件“/Users/whitebear/tensorflow/lib/python3.4/site packages/tensorflow/python/client/session.py”,第975行,正在运行
%(np_val.shape,subfeed_t.name,str(subfeed_t.get_shape()))
ValueError:无法为具有形状“(?,10)”的张量“占位符:0”提供形状(10,5)的值
问题在于占位符的形状与输入的形状不匹配。占位符x
需要一个包含N行和10列的值,但是train_x
包含10行和5列。同样,t
应该有N行和1列,但是传递的值train\t
有10行和5列。您应该更改占位符的形状或输入的形状