LiSSA: Toward Generic Traceability Link Recovery through Retrieval-Augmented Generation

LiSSA (Linking Software System Artifacts) is an LLM-based approach that aims to be generic across artifact types. The key idea is to use a Large Language Model (LLM) together with information retrieval (IR) to find trace links. For a given source artifact (e.g. a requirement or a sentence in documentation), LiSSA first uses IR techniques to retrieve a small set of potentially relevant target artifacts (code files, model elements, etc.). It then queries the LLM with the retrieved context to generate or suggest the most likely trace link.