Full-access lesson
BERT
> In this constructed interpolation task, averaging both neighbors recovers the hidden midpoint while copying the left neighbor does not. The example illustrates the value of right context; it is not a BERT model or evidence that bidirectional context always wins.
The complete curriculum
All 12 volumes, companion resources, interviews, and architecture reviews.
Executable engineering practice
Subscriber-only Python, Java, TypeScript, and SQL labs in the isolated runner.