Hi, during the prediction of the Humpback Whale Identification Challenge challanged, when I finally run **log_pred,y = learn.TTA()** and print the **log_pred** shape

**log_pred.shape**

It’s is giving me the following as output

**(5, 1808, 4250)**

Now, I understand that **1808** is the number of test images and **4250** is my number of classes, what I don’t understand the first dimension i.e. **5**. What is that this first dimension signify?