Optimizations for Very Long and Sparse Vector Operations on a RISC-V VPU: A Work-in-Progress. - Gopinath Mahale; Tejas Limbasiya; Muhammad Asad Aleem; Luis A. Plana; Aleksandar Duricic; Alireza Monemi; Xabier Abancens; Teresa Cervero; John D. Davis (ISC Workshops, 2023)