Chaoshun

Results 2 issues of Chaoshun

it should be new_shape = tf.concat([tf.shape(input=q)[0:-1],[v.shape[-1]]],0) instead of new_shape=tf.concat([tf.shape(input=q)[0:-1],[v.shape[-1].value]],0)

I used dygraph(nhtemp, main = "New Haven Temperatures") The figure shows as follows ![image](https://user-images.githubusercontent.com/38386469/43363556-f9d92536-92cc-11e8-9906-c7853daa3b1a.png)