Tinker Pre-training

by Samy (Kondasamy Jayaraman) · drawn with Colorfigures by April Zhu

Step 3000, the last checkpoint: training loss 2.99.

Chapter 3 of 7

Held out

Training loss fell all run long. But it is measured on the very text the model trained on.

This chapter: Does the model also get better on text it has never seen?

About this chapter

You will learn

  • Why you score a model on held-out text
  • What the gap between training and held-out loss means
  • How memorising shows up as that gap growing

Words you’ll meet

Held-out text
Documents kept out of training, used only to score the model.
Gap
Held-out loss minus training loss: how much better the model does on text it has seen.
Memorising
Learning the training text itself, rather than patterns that carry over to new text.

Step 1 of 4

The team kept some documents back as : never trained on, only used to score the model.

Predict first.

Over the run, how does held-out loss move compared with training loss?