我正在研究Tensorflow CNN模型,并根据我的方案进行了更改。以前相同的代码在MNIST数据集上运行良好,但是现在,在为我自己的数据集提供标签的占位符y_true
之后会导致问题。代码段:
x = tf.placeholder("float",shape=[88, 128])
y_true = tf.placeholder("float",shape=[None, 3])
会话中的 y_true
让我错误。代码段:
sess.run(train,feed_dict={x:batch_x, y_true:batch_y,hold_prob:0.5})
错误:
TypeError: The value of a feed cannot be a tf.Tensor object.
Acceptable feed values include Python scalars, strings, lists,
numpy ndarrays, or TensorHandles.
我通过numpy array
将其投放到y = np.array(y_true)
并根据y
调整了该声明但又错误:
TypeError: unhashable type: 'numpy.ndarray'
按照stackoverflow上的建议尝试了y_true.eval(session = my_sess)
但又错误了:
InvalidArgumentError: You must feed a value for placeholder tensor
'Placeholder_4' with dtype float and shape [?,3]
有什么想法吗?这里有什么问题以及如何将其转换/转换为合适的格式。 其他信息:
batch_x = batch of 50 images (total 200K), 88x128 single channel
batch_y = labels (string) same batch as above
答案 0 :(得分:0)
input[type="checkbox"],
input[type="radio"] {
-moz-appearance: none;
-webkit-appearance: none;
-ms-appearance: none;
appearance: none;
display: block;
float: left;
margin-right: -2em;
opacity: 0;
width: 1em;
z-index: -1;
}
input[type="checkbox"] + label,
input[type="radio"] + label {
text-decoration: none;
color: #fff;
cursor: pointer;
display: inline-block;
font-size: 1em;
font-weight: 400;
padding-left: 2.4em;
padding-right: 0.75em;
position: relative;
}
input[type="checkbox"] + label:before,
input[type="radio"] + label:before {
-moz-osx-font-smoothing: grayscale;
-webkit-font-smoothing: antialiased;
font-family: FontAwesome;
font-style: normal;
font-weight: normal;
text-transform: none !important;
}
input[type="checkbox"] + label:before,
input[type="radio"] + label:before {
background: rgba(144, 144, 144, 0.25);
border-radius: 3px;
content: '';
display: inline-block;
height: 1.65em;
left: 0;
line-height: 1.58125em;
position: absolute;
text-align: center;
top: 0;
width: 1.65em;
}
input[type="checkbox"]:checked + label:before,
input[type="radio"]:checked + label:before {
background: #2e3842;
color: #fff;
content: '\f00c';
}
input[type="checkbox"]:focus + label:before,
input[type="radio"]:focus + label:before {
box-shadow: 0 0 0 2px #21b2a6;
}
input[type="checkbox"] + label:before {
border-radius: 3px;
}
input[type="radio"] + label:before {
border-radius: 100%;
}
如果这意味着您的标签是字符串,那可能是错误的原因,因为占位符被定义为浮点数。
否则,请重新检查数据类型和尺寸。