Better to clarify the physical meaning of "predict" and "target" output.

[yeephycho]

I'm trying to understand the physical meaning of the control message displayed during the training. On my Ubuntu15.10, the message follows the pattern of:

predict:
<type ‘numpy.ndarray’>
(100, 101)
["100 scalar"]
target:
["100 scalar"]
test predict:
<type ‘numpy.ndarray’>
(100, 101)
["100 scalar"]
test target:
["100 scalar"]
test "current time": step *, loss = *, (# examples/sec; # sec/batch)

I'll try to figure out the physical meaning for the scalar part and add some comments.