Book
Open access
Jul 2026
Better than Dense? Investigating the Natural Backward Compatibility of Learned Sparse Representations
This work investigates whether Learned Sparse Retrieval (LSR) can mitigate this backward compatibility issue, and explores lightweight query adaptation methods including ranking fusion, representation fusion, and minimal-training adapters to further improve compatibility.
Jingfen Qiao, Gabrielle Poerwawinata, Thong Nguyen et al.
· Annual International ACM SIG... · 0 citations