Plotting a single training instance

As we can see, there are 25,000 training and test samples. We can also plot out an individual training sample to see how we can represent a single review. Here, we can see that each review simply contains a list of integers, where each integer corresponds to a word in a dictionary:

x_train[1]

[1,
 194,
 1153,
 194,
 8255,
 78,
 228,
 5,
 6,
 1463,
 4369,
 5012,
 134,
 26,
 4,
 715,
 8,
 118,
 1634,
 14,
 394,
 20,
 13,
 119,
 954,

Decoding the reviews

If you're curious (which we are), we can of course map out the exact words that these numbers correspond to so that we can read what the review actually says. To do this, we must back up our labels. While this step is not essential, it...