parse

Definition

To read a string against a grammar and turn it into structure. Classically it meant syntactic parsing of natural language into trees; in LLM engineering it now usually means pulling structured output — JSON, a tool call, a code block — out of free-form generated text so downstream code can use it. In practice people call even regex-based extraction parsing, and parse failures are a routine source of agent errors.

Explainers using this term

• Lucida, explained — turning a room video back into parts you can move, by deferring precision to the endLucida: Parse, Generate, and Place for Composable Real-to-Sim Scene Modeling