Engrain by ByteRush

AGT.02.03 Mid-levelCore — asked often

Training: pre-training, post-training and reasoning models

Comes up in: AI engineering

This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.

What it covers

  • pre-training on large text
  • instruction tuning
  • RLHF and related methods (RLAIF, constitutional approaches — at concept level)
  • reasoning/"thinking" models and adaptive thinking/effort controls (facts)
  • multimodal input

Words you will know

pre-trainingfine-tuningRLHFreasoning model

What you will practise

  • explain to a PM why the model "knows" some things and not others

Interview questions this answers

  • What is the difference between pre-training and fine-tuning?