H-ProtoRAG: A Hierarchical Prototype-Based Retrieval-Augmented Framework for Multilingual CPC Patent Classification and Prior-Art Retrieval

Elmi, Zahra2026-05-252026-05-2520260306-4573https://hdl.handle.net/123456789/725https://doi.org/10.1016/j.ipm.2026.104861eninfo:eu-repo/semantics/closedAccessClaim–Evidence MatchingHierarchical CPC ClassificationPrototype-Based Representation LearningExplainable Legal AIRetrieval-Augmented ModelingPatent Information RetrievalH-ProtoRAG: A Hierarchical Prototype-Based Retrieval-Augmented Framework for Multilingual CPC Patent Classification and Prior-Art RetrievalArticle10.1016/j.ipm.2026.1048612-s2.0-105036832325