MARVEL: An End-to-End Framework for Generating Model-Class Aware Custom RISC-V Extensions for Lightweight AI. - Ajay Kumar M; Cian O'Mahoney; Pedro Kreutz Werle; Shreejith Shanker; Dimitrios S. Nikolopoulos; Bo Ji 001; Hans Vandierendonck; Deepu John (CoRR, 2025)