Embeddings

Roz answers questions about me in the visitor’s language, from what this website publishes and a set of notes written for her, with links to where each answer comes from. This is how she is designed: the idea behind her, her architecture, the search that decides what she reads, and the rules that keep her honest.

A retrieval system over four chapters of the PostgreSQL documentation. Both of the bugs that mattered were silent: a parser that returned the right number of chunks and left every one of them empty, and an out-of-scope threshold that confidently answered questions whose answers lived in other chapters. Neither raised an error, and each needed a different kind of test to surface.