Artificial Intelligence By Example

Correct prediction

The following code implements correct_prediction, which uses an argmax function.

with tf.name_scope('accuracy'):with tf.name_scope('correct_prediction'):correct_prediction = tf.equal(tf.argmax(y, 1), tf.argmax(y_, 1))

tf.argmax will output the index of the largest value of the input tensors. This simplifies the task considerably by avoiding the need to manage scores of values. When things go wrong—and they often do in real-life projects—we can go back to the preceding nodes and debug the data flow or improve the design of the data flow graph structure.

When accuracy fails to meet expectations, TensorBoard provides us with a two-dimensional debugging approach: fine-tune the data flow graph structure itself and also explore ...