Topic 01
Objective 1
How a model produces an answer
A working picture of what sits under the chat box: trained weights, prediction, and variation. Enough to use the system. No programming.
What a model is
The object itself, in ordinary language, so the rest of the day has one shared picture.
- A model is a function trained on examples. It is not a filing cabinet of facts you can query by name.
- Given your input, it predicts the next piece of a pattern: the next word, pixel, or token that fits what came before.
Training and use
The difference between how the system was built and what happens when you press send.
- Training is the expensive, mostly one-time pass over large datasets that sets the model's weights.
- Everyday use is inference: your request in, an output out, no new learning unless a separate system is built for that.
Why two drafts differ
Why the same request is not a lookup, and what that means when you compare outputs.
- The system samples among likely next pieces. It is not looking up a single stored paragraph.
- A small change in the brief, the order of notes, or the length you asked for will pull a different pattern forward.